OwlCyberSecurity - MANAGER
Edit File: contour.cpython-38.pyc
U ��]h � @ s* d Z ddlmZ ddlZddlmZ ddlZddlm Z ddl m Z ddl mZ ddlmZ ddlmZ ddlmZ ddlmZ ddlmZ ddlm Z ddl m Z ddl m!Z! ddl"m#Z$ ddl%m&Z& G dd� dej'�Z(G dd � d e)�Z*d d � Z+d d � Z,dd� Z-G dd� dej.e*�Z/G dd� de/�Z0dS )zQ These are classes to support contour plotting and labelling for the Axes class. � )�IntegralN)�ma)�BlockingContourLabelerc @ s e Zd ZdZdd� ZdS )� ClabelTextz� Unlike the ordinary text, the get_rotation returns an updated angle in the pixel coordinate assuming that the input rotation is an angle in data coordinate (or whatever transform set). c C sH t j�| �}| �� }| �� \}}|�t�|g�t�||gg��}|d S )Nr )�text�Text� get_rotation� get_transformZ get_position�transform_angles�np�array)�selfZangle�trans�x�yZ new_angles� r �4/usr/lib/python3/dist-packages/matplotlib/contour.pyr ) s �zClabelText.get_rotationN)�__name__� __module__� __qualname__�__doc__r r r r r r # s r c @ s e Zd ZdZddddddddd�dd �Zejd d d �ed d� ��Zejd dd �edd� ��Z ejd dd �edd� ��Z dd� Z dd� Z dd� Z dd� Zdd � Zd d � Zd d � Zd4d!d"�Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd5d-d.�Zd6d0d1�Zd2d3� ZdS )7�ContourLabelerz7Mixin to provide labelling capability to `.ContourSet`.NT� �%1.3fF)�fontsize�inline�inline_spacing�fmt�colors�use_clabeltext�manual� rightside_upc G s� || _ || _|| _|| _t| �dkr>| j} ttt| j���} n~t| �dkr�t| d �} g g } } t | j�D ]$\} }|| krj| � | � | � |� qjt| �t| �k r�t d� | | j���nt d��| | _| | _t�� | _| j�|� | j�� }|gt| � | _|dk�r | | _t�| j| j�| _n<tj|t| j�d�}ttt| j���| _t j |t� � d�| _g | _ t� | j��r�| jD ]\}}| �!||||� �qrnF| j�r�t"d� t"d � |�s�t"d � t#| �}|||� n | �$||� t%�&d | j'�| _(| j(S ) a� Label a contour plot. Call signature:: clabel(cs, [levels,] **kwargs) Adds labels to line contours in *cs*, where *cs* is a :class:`~matplotlib.contour.ContourSet` object returned by ``contour()``. Parameters ---------- cs : `.ContourSet` The ContourSet to label. levels : array-like, optional A list of level values, that should be labeled. The list must be a subset of ``cs.levels``. If not given, all levels are labeled. fontsize : string or float, optional Size in points or relative size e.g., 'smaller', 'x-large'. See `.Text.set_size` for accepted string values. colors : color-spec, optional The label colors: - If *None*, the color of each label matches the color of the corresponding contour. - If one string color, e.g., *colors* = 'r' or *colors* = 'red', all labels will be plotted in this color. - If a tuple of matplotlib color args (string, float, rgb, etc), different labels will be plotted in different colors in the order specified. inline : bool, optional If ``True`` the underlying contour is removed where the label is placed. Default is ``True``. inline_spacing : float, optional Space in pixels to leave on each side of label when placing inline. Defaults to 5. This spacing will be exact for labels at locations where the contour is straight, less so for labels on curved contours. fmt : string or dict, optional A format string for the label. Default is '%1.3f' Alternatively, this can be a dictionary matching contour levels with arbitrary strings to use for each contour level (i.e., fmt[level]=string), or it can be any callable, such as a :class:`~matplotlib.ticker.Formatter` instance, that returns a string when called with a numeric contour level. manual : bool or iterable, optional If ``True``, contour labels will be placed manually using mouse clicks. Click the first button near a contour to add a label, click the second button (or potentially both mouse buttons at once) to finish adding labels. The third button can be used to remove the last label added, but only if labels are not inline. Alternatively, the keyboard can be used to select label locations (enter to end label placement, delete or backspace act like the third mouse button, and any other key will select a label location). *manual* can also be an iterable object of x,y tuples. Contour labels will be created as if mouse is clicked at each x,y positions. rightside_up : bool, optional If ``True``, label rotations will always be plus or minus 90 degrees from level. Default is ``True``. use_clabeltext : bool, optional If ``True``, `.ClabelText` class (instead of `.Text`) is used to create labels. `ClabelText` recalculates rotation angles of texts during the drawing time, therefore this can be used if aspect of the axes changes. Default is ``False``. Returns ------- labels A list of `.Text` instances for the labels. r � z3Specified levels {} don't match available levels {}z-Illegal arguments to clabel, see help(clabel)N��N)�cmap�normz9Select label locations manually using first mouse button.z.End manual selection with second mouse button.z1Remove last label by clicking third mouse button.z text.Text))�labelFmt�_use_clabeltextZ labelManualr! �len�levels�list�range�cvalues� enumerate�append� ValueError�format� TypeError�labelLevelList�labelIndiceList� font_managerZFontProperties�labelFontPropsZset_sizeZget_size_in_points�labelFontSizeList� labelMappabler Ztake�labelCValueList�mcolors�ListedColormap�cm�ScalarMappable�NoNorm�labelXYs�iterable�add_label_near�printr �labels�cbook� silent_list� labelTextsZlabelTextsList)r r r r r r r r r! �argsr* �indicesZlevlabs�i�levZ font_size_ptsr% r r Zblocking_contour_labelerr r r �clabel5 sd i � � � zContourLabeler.clabelz3.0rF )Z alternativec C s | j S �N)rF �r r r r �<lambda>� � zContourLabeler.<lambda>r? c C s | j S rL )r? rM r r r rN � rO � labelCValuesc C s | j S rL )rP rM r r r rN � rO c C s* t |�d| kp(tj|dd�d| k�� S )z5Return *False* if contours are too short for a label.� r �Zaxis�333333�?)r) r Zptp�any)r � linecontour� labelwidthr r r � print_label� s �zContourLabeler.print_labelc s( d| d � t � ��fdd�| jD ��S )z7Return *True* if a label is already near this location.rS � c 3 s2 | ]*}�|d d �|d d � k V qdS )r rX r" Nr )�.0Zloc�Zthreshr r r r � <genexpr>� s �z+ContourLabeler.too_close.<locals>.<genexpr>)rT r? )r r r �lwr rZ r � too_close� s �zContourLabeler.too_closec C s� t |d �}t�|�}|D ]:}|| | || | } } | �| | |�rHq| | |f S |d }|| | || | } } | | |fS )a� Return x, y, and the index of a label location. Labels are plotted at a location with the smallest deviation of the contour from a straight line unless there is another label nearby, in which case the next best place on the contour is picked up. If all such candidates are rejected, the beginning of the contour is chosen. rX r )�intr Zargsortr] ) r Z distances�XX�YY�ysizer\ ZhysizeZadist�indr r r r r �get_label_coords� s z ContourLabeler.get_label_coordsc C s� t |t�s| �||�}t�� �|�\}}|dkrZt| d�sDt�� | _ | j � ||�\}}}nL|r�t| d�stt � d�| _ | j j|d| jd�\}}|�� }nt|�| d }|S )z: Return the width of the label in points. ZTeX� _TeX_manager�_mathtext_parserZbitmap�H )�dpiZpropg333333�?)� isinstance�str�get_textr r Z_preprocess_math�hasattr� texmanagerZ TexManagerrd Z get_text_width_height_descent�mathtextZMathTextParserre �parser6 Z get_widthr) )r rJ r �fsizeZismathr\ �_Zimgr r r �get_label_width s$ � � z ContourLabeler.get_label_widthc C s2 |� |� |�|� |�| j� |�| jj� dS )z1Set the label properties - color, fontsize, text.N)Zset_text� set_colorZset_fontpropertiesr6 Z set_clip_box�axZbbox)r �labelr �colorr r r �set_label_props s z ContourLabeler.set_label_propsc C s@ t |t�r|S t |t�r$|�|d�S t|�r4||�S || S dS )zGet the text of the label.r N)rh ri �dict�get�callable)r rJ r r r r rj # s zContourLabeler.get_textc C sj t |�}|dkr$tt�|| ��}nd}|dkr6|}nt|�}t�|dd�df ||f�}t�|dd�df ||f�}|dd�dd�f }|dd�dd�f } |dd�dd�f } |dd�dd�f } || | | | | | | } t�| | | | �} tjddd�� tjt�| �| dd�}W 5 Q R X | � |||||�\}}}dd � |D �}|� ||f�}|||fS ) zX Find good place to draw a label (relatively flat part of the contour). r" Nr ����ignore)ZdivideZinvalidrR c S s g | ] }t |��qS r ��tuple)rY �lr r r � <listcomp>N s z/ContourLabeler.locate_label.<locals>.<listcomp>) r) r^ r �ceilZresize�hypotZerrstate�sum�absrc �index)r rU rV ZnsizeZxsizera r_ r` ZyfirstZylastZxfirstZxlast�s�LZdistr r rb �lcZdindr r r � locate_label/ s* "zContourLabeler.locate_labelc s� |dkr g }|d }t |�}|rptj||d� |d|d � f }t|�rltj||d� |d|d � f }d}tj|jd td��tj|dd�}t�t� |dd�df |dd�df ���dd�< ��| �t� | |g��|r�t� �d dg�� n t� ��� � ��fdd �|j D �\\}\} t� t�| |��} | j�rL| d d d } g } t|��r�� � t� | |g� �tj��t�t���ddd �} t�| d ��t�t�| d ��t�g} | d dk�r܇�fd d�|j D �} | d dk�r ��fdd�|j D �}|�rFtdd � | D ���r�| �t�||| d | d d � | g�� n`| d dk�rx| �t�|d| d d � | g�� | d dk�r�| �t�||| d d� g�� | | fS )a This function calculates the appropriate label rotation given the linecontour coordinates in screen units, the index of the label location and the label width. It will also break contour and calculate inlining if *lc* is not empty (lc defaults to the empty list if None). *spacing* is the space around the label in pixels to leave empty. Do both of these tasks at once to avoid calculating path lengths multiple times, which is relatively costly. The method used here involves calculating the path length along the contour in pixel coordinates and then looking approximately label width / 2 away from central point to determine rotation and then to break contour if desired. Ng @rz r" r �ZdtyperR c 3 s& | ] }t �t �� � �|��V qd S rL )r �diff�interp)rY Zslc_col�Zdp�pl�xir r r[ � s �z;ContourLabeler.calc_label_rot_and_inline.<locals>.<genexpr>�Z � )�left�rightc s g | ]}t ��d � |��qS )r �r r� �rY Zlc_col�r� r� r r r � s z<ContourLabeler.calc_label_rot_and_inline.<locals>.<listcomp>c s g | ]}t ��d � |��qS )r" r� r� r� r r r � s c s s | ]}|d kV qdS )rz Nr )rY rI r r r r[ � s )�_is_closed_polygonr �r_r) Zzeros�shape�floatr� Zcumsumr� r Z zeros_like�TZrad2degZarctan2r! r� �arangeZfloor�astyper^ r� �allr/ Z row_stack)r �slcrb r\ r� ZspacingZhlw�closed�dx�dy�rotation�nlc�IZxy1Zxy2r r� r �calc_label_rot_and_inlineS sP ""2 � (,$ z(ContourLabeler.calc_label_rot_and_inlinec C s2 | j j�� �||f�\}}tj|||ddd�}|S )N�center�r� ZhorizontalalignmentZverticalalignment)rs � transData�inverted�transform_pointr r )r r r r� r� r� �tr r r �_get_label_text� s �z ContourLabeler._get_label_textc C sX | j j�� }|�||f�\}}|�t�|g�t�||gg��}t|||d ddd�}|S )Nr r� r� )rs r� r� r� r r r r ) r r r r� Z transDataInvr� r� Z drotationr� r r r �_get_label_clabeltext� s � �z$ContourLabeler._get_label_clabeltextc C sf | j j|| jd�}| �|| j�}| �|||� | j�|� | j�|� | j �||f� | j � |� d S )N��alpha) r8 �to_rgbar� rj r' rv rF r/ rP r? rs Z add_artist)r r� r r rJ �cvalueru Z_textr r r � _add_label� s zContourLabeler._add_labelc C s$ | � |||�}| �|||||� dS )zO Add contour label using :class:`~matplotlib.text.Text` class. N)r� r� �r r r r� rJ r� r� r r r � add_label� s zContourLabeler.add_labelc C s$ | � |||�}| �|||||� dS )zD Add contour label using :class:`ClabelText` class. N)r� r� r� r r r �add_label_clabeltext� s z#ContourLabeler.add_label_clabeltextc C s� |dkr| j j}|r&|�||f�\}}| �||| j�dd� \}}}} } | j| �� } | | } | j} | j j�� �| | g�}t � || | �s�t j | d|� t � |�ddd�f | |d� f } t �| �| |< | j�|�}| j| �� } | | j} | j j�| �}| �| j| | j| j| �}|| j jjd 9 }|�r6| }nd}| �|||||�\}}| �| | || j| | j| � |�r�| �|� |D ]$}t|�dk�r�| � t �|�� �q�dS )a) Add a label near the point (x, y). If transform is None (default), (x, y) is in data coordinates; if transform is False, (x, y) is in display coordinates; otherwise, the specified transform will be used to translate (x, y) into display coordinates. Parameters ---------- x, y : float The approximate location of the label. inline : bool, optional, default: True If *True* remove the segment of the contour beneath the label. inline_spacing : int, optional, default: 5 Space in pixels to leave on each side of label when placing inline. This spacing will be exact for labels at locations where the contour is straight, less so for labels on curved contours. Nr � R@r" ) rs r� r� �find_nearest_contourr4 � collections� get_paths�verticesr� r Zallcloser� r �mpath�Pathr� � transformrq r3 r' r7 �figurerg r� r� r9 �popr) r/ )r r r r r r� �conmin�segmin�imin�xmin�ymin�pathsZ active_pathr� �xcminZlminr� r\ �lcargr� r� �nr r r rA � sZ ��2 � �� z ContourLabeler.add_label_nearrz c C s$ | j �|� | j�|�}|�� dS )z>Defaults to removing last label, but any index can be suppliedN)rP r� rF �remove)r r� r� r r r � pop_label= s zContourLabeler.pop_labelc C st | j r| j}n| j}t| j| j| j| j�D �]B\}}}}| j| }|� � } | � || j |�} | | j j jd 9 } g } |�� } t| �D ]�\} }|j}| �|�}t|�r�tj||dd�d d �f f }n|}| �|| ��rJ| �|| �\}}}|r�|}nd }| �||| ||�\}}||||||� |�rT|D ]$}t|�dk�r"| �t� |�� �q"q�| �|� q�|r*| d d �= | � | � q*d S )Nr� r" rX ) r( r� r� �zipr4 r3 r7 r9 r� r rq r' rs r� rg r� r. r� r� r� r r� rW r� r� r) r/ r� r� �extend)r r r r� �iconrJ ro r� �conr r\ Z additionsr� �segNum�linepathr� Zslc0r� r r rb r� r� �newr� r r r rC C sT � � zContourLabeler.labels)Nr )Tr N)rz )r r r r rK rD Z deprecated�propertyZclZcl_xyZ cl_cvaluesrW r] rc rq rv rj r� r� r� r� r� r� r� rA r� rC r r r r r 2 sL � %��� $ [ � Y r c C s� t �|| k�r(t �|| d �}|| fS || }|| }t �||�t �||� }|dk r\d}|dkrhd}| || }t �|| d �}||fS )zBFind the closest point to p0 on line segment connecting p1 and p2.rX r r" )r r� r� �dot)Zp1Zp2Zp0�dZd21Zd01ZprojZpcr r r �_find_closest_point_on_leg� s r� c C s t �| d | d k�S )z� Return whether first and last object in a sequence are the same. These are presumably coordinates on a polygonal curve, in which case this function tests if that curve is closed. r rz )r r� )�Xr r r r� � s r� c C s� t �| |ddd�f d d�}t �|�}t j}d}d}t| �}g }|dksP|rj|�|d t| � |f� |t| �d k s~|r�|�||d t| � f� |D ]8} t| | d | | d |�\} } | |k r�| }| }| }q�|||fS )zj Parameters ---------- lc : coordinates of vertices point : coordinates of test point NrX r" )NNr )r r� Zargmin�infr� r/ r) r� ) r� �pointZdsr� �dminr� Zlegminr� Zlegs�legr� �xcr r r �_find_closest_point_on_path� s$ r� c @ s� e Zd ZdZddddddddddddddd�dd�Zdd � Zd d � Zd efd d�Zdd� Z dd� Z dd� Z dd� Z dd� Z dd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd,d*d+�ZdS )-� ContourSeta Store a set of contour lines or filled regions. User-callable method: `~.axes.Axes.clabel` Parameters ---------- ax : `~.axes.Axes` levels : [level0, level1, ..., leveln] A list of floating point numbers indicating the contour levels. allsegs : [level0segs, level1segs, ...] List of all the polygon segments for all the *levels*. For contour lines ``len(allsegs) == len(levels)``, and for filled contour regions ``len(allsegs) = len(levels)-1``. The lists should look like:: level0segs = [polygon0, polygon1, ...] polygon0 = array_like [[x0,y0], [x1,y1], ...] allkinds : ``None`` or [level0kinds, level1kinds, ...] Optional list of all the polygon vertex kinds (code types), as described and used in Path. This is used to allow multiply- connected paths such as holes within filled polygons. If not ``None``, ``len(allkinds) == len(allsegs)``. The lists should look like:: level0kinds = [polygon0kinds, ...] polygon0kinds = [vertexcode0, vertexcode1, ...] If *allkinds* is not ``None``, usually all polygons for a particular contour level are grouped together so that ``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``. **kwargs Keyword arguments are as described in the docstring of `~.axes.Axes.contour`. Attributes ---------- ax The axes object in which the contours are drawn. collections A silent_list of LineCollections or PolyCollections. levels Contour levels. layers Same as levels for line contours; half-way between levels for filled contours. See :meth:`_process_colors`. NFZneither)r* �filled� linewidths� linestylesr� �origin�extentr% r r& �vmin�vmaxr� � antialiasedc ( O s� || _ || _|| _|| _|| _|�ddg�| _|| _|| _|| _ | | _ || _ || _ | j dkrh| jrhd| _ |�dd�| _ |�dd�| _t| tj�s�t| jtj�r�d| _| dkr�t�� } nd| _tjddd d g|d � | j dk r�t| j �d kr�td ��| j dk �r| dk �rtd��| jd k�r(tjd | _|�dd�| _| j ||�}| � � | j dk �rt| j�}| j�rp|d8 }d}| j dk}| j dk}d}|t |� t |� }t| j �|k�r�|�s�|�r�d}|�r�d}tj | j |d� |d�} |�r|�r�| � | j d � |�r| �!| j d � | j�r*t�"d�| _#n t�"d�| _#g | _$g | _%d| i}| dk �r\| |d< t&j'j(| f|� | dk �r~| | j)_*| dk �r�| | j)_+| �,� | �-� \| _.| _/| j�rh| jdk �r�t�0d� | �1� \}}| j/dk�r�dgt| j.� | _/|�dd�}t2||| j.| j/�D ]V\} } } } | �3| | �} t4j5| | j fd | j| �6� |d �}!| j j7|!dd � | j#�8|!� �qn�| �9� }"|"| _:| �;� }#| j }$|$dk �r�| j f}$|�dd �}t2| j|"|#| j.�D ]T\} }%}&} t4j<| |$|%|&g| j| �6� |d �}!|!�=d!� | j j7|!dd � | j#�8|!� �q�| j#D ]F}!| j>d | j?d g|!j@jAdd�< | j>d | j?d g|!j@jBdd�< �q| j �C| j>| j?g� | j jDdd"� | �E� |�r�d#�FtGtH|��}'t�0d$|' � dS )%a� Draw contour lines or filled regions, depending on whether keyword arg *filled* is ``False`` (default) or ``True``. Call signature:: ContourSet(ax, levels, allsegs, [allkinds], **kwargs) Parameters ---------- ax : `~.axes.Axes` The `~.axes.Axes` object to draw on. levels : [level0, level1, ..., leveln] A list of floating point numbers indicating the contour levels. allsegs : [level0segs, level1segs, ...] List of all the polygon segments for all the *levels*. For contour lines ``len(allsegs) == len(levels)``, and for filled contour regions ``len(allsegs) = len(levels)-1``. The lists should look like:: level0segs = [polygon0, polygon1, ...] polygon0 = array_like [[x0,y0], [x1,y1], ...] allkinds : [level0kinds, level1kinds, ...], optional Optional list of all the polygon vertex kinds (code types), as described and used in Path. This is used to allow multiply- connected paths such as holes within filled polygons. If not ``None``, ``len(allkinds) == len(allsegs)``. The lists should look like:: level0kinds = [polygon0kinds, ...] polygon0kinds = [vertexcode0, vertexcode1, ...] If *allkinds* is not ``None``, usually all polygons for a particular contour level are grouped together so that ``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``. **kwargs Keyword arguments are as described in the docstring of `~axes.Axes.contour`. �hatchesNF�nchunkr �locatorT�lower�upperZimage)r� � z7If given, *extent* must be '[ *None* | (x0,x1,y0,y1) ]'z"Either colors or cmap must be Nonez image.originr� r" ��min�both��maxr� r# rz zmcoll.PathCollectionzmcoll.LineCollectionr% r& z!linewidths is ignored by contourf�zorderZnone)� antialiasedsZ edgecolorsr� r� r� )ZautolimrX )r� r� r� r� r� r� Z _nolegend_)Ztightz, z/The following kwargs were not used by contour: )Irs r* r� r� r� r� r� r� r� r� r r� r� r� r� rh r: ZLogNorm�ticker� LogLocator�logscalerD Z_check_in_listr) r0 �mpl�rcParams� _transform� _process_args�_process_levelsr^ r; Z set_underZset_overrE r� rF rP r< r= �__init__r& r� r� �_process_colors�_get_allsegs_and_allkinds�allsegs�allkinds�_warn_external�_get_lowers_and_uppersr� � _make_paths�mcollZPathCollectionr Zadd_collectionr/ �_process_linewidths� tlinewidths�_process_linestyles�LineCollectionZ set_label�_mins�_maxsZ sticky_edgesr r Zupdate_datalimZautoscale_view�changed�join�map�repr)(r rs r* r� r� r� r� r� r� r% r r& r� r� r� r� rG �kwargsZncolors�i0Z extend_minZ extend_maxZuse_set_under_overZ total_levels�kw�lowers�uppersr� �level� level_upper�segs�kindsr� �colr � tlinestylesZaa�widthZlstyler� r r r r� � s� 2 � � � �� $�zContourSet.__init__c C sF | j dkr| jj| _ n*t| j tj�s@t| j d�r@| j �| j�| _ | j S )zp Return the :class:`~matplotlib.transforms.Transform` instance used by this ContourSet. N�_as_mpl_transform)r� rs r� rh � mtransformsZ Transformrk r rM r r r r � s �zContourSet.get_transformc C s | j �� }d |d< |S )N�_contour_generator)�__dict__�copy)r �stater r r � __getstate__� s zContourSet.__getstate__r c C sD g }g }| j r�| �� \}}t| j�}tt| j||��D ]�\}\} } } tjddd| �� d | � � | � � d�} |� | � || �} || �} |dkr�| j dkr�|� d|| f � q6||d kr�| j dkr�|� d|| f � q6|� d | || f � q6nPt| j| j �D ]@\} } t�d �} | �| � |� | � || �} |� d || f � q�||fS ) a� Return a list of artists and labels suitable for passing through to :func:`plt.legend` which represent this ContourSet. The labels have the form "0 < x <= 1" stating the data ranges which the artists represent. Parameters ---------- variable_name : str The string used inside the inequality used on the labels. str_format : function: float -> str Function used to format the numbers in the labels. Returns ------- artists : List[`.Artist`] A list of the artists. labels : List[str] A list of the labels. )r r r" r )Z facecolor�hatchr� r� z $%s \leq %s$r� z $%s > %s$z$%s < %s \leq %s$Nz $%s = %s$)r� r r) r� r. r� �mpatchesZ RectangleZ get_facecolorZ get_hatch� get_alphar/ r� r* r r Z update_from)r Z variable_nameZ str_formatZartistsrC r r Zn_levelsrI � collectionr� r� Zpatchr r r r �legend_elements� sL � � � � � zContourSet.legend_elementsc O s� |d | _ |d | _t|�dkr(|d p*d| _t�| j �| _t�| j �| _| j rrt| j�t| j �d kr�t d��n t| j�t| j �kr�t d��| jdk r�t| j�t| j�kr�t d��dd � | jD �}tj |dd �}|jdd �| _ |jdd �| _ |S ) z� Process *args* and *kwargs*; override in derived classes. Must set self.levels, self.zmin and self.zmax, and update axes limits. r r" rX Nz-must be one less number of segments as levelsz)must be same number of segments as levelsz(allkinds has different length to allsegsc S s g | ]}|D ]}|�q qS r r )rY �segr� r r r r = s z,ContourSet._process_args.<locals>.<listcomp>rR )r* r� r) r� r r� �zmaxr� �zminr� r0 Z concatenater r )r rG r Z flatseglistZpointsr r r r� ! s& �zContourSet._process_argsc C s | j | jfS )zv Override in derived classes to create and return allsegs and allkinds. allkinds can be None. )r� r� rM r r r r� D s z$ContourSet._get_allsegs_and_allkindsc C s` | j dd� }| j|d krJ|�� }| jr:d| j |d< n|d d8 < | j dd� }||fS )z= Return (lowers,uppers) for filled contours. Nrz r g�G�z��?r" )�_levelsr( r r� )r r r r r r r K s z!ContourSet._get_lowers_and_uppersc C s. |d k r dd� t ||�D �S dd� |D �S d S )Nc S s g | ]\}}t j||d ��qS ))Zcodes�r� r� )rY r& Zkindr r r r \ s �z*ContourSet._make_paths.<locals>.<listcomp>c S s g | ]}t �|��qS r r* )rY r& r r r r _ s )r� )r r r r r r r Z s �zContourSet._make_pathsc C s� dd� | j | j| jd�D �}|| _| jt|� }t||| j�D ]0\}}}| jrd|� |� |� |� q>|� |� q>t| j | j �D ]&\}}|�| j� |� | j� |�� q~tj�| � d S )Nc S s g | ]}t |�f�qS r r| )rY Zrgbar r r r b s �z&ContourSet.changed.<locals>.<listcomp>r� )r� r- r� �tcolorsr� r) r� r� r� Z set_facecolorZ set_hatchrr rF rP � set_alphar8 r< r= r )r r+ r� ru r! r$ rt Zcvr r r r a s �� zContourSet.changedc C s | j dkr0| jr t�� | _ ntj|d dd�| _ | j �| j| j�}z| j jrR|W S W n t k rh Y nX t � || jk �d }t |�r�|d nd}t � || jk�d }t |�r�|d d nt |�}| j dkr�|d7 }| j dkr�|d8 }|| dk �rdt |� }}|||� S ) a, Select contour levels to span the data. The target number of levels, *N*, is used only when the scale is not log and default locator is used. We need two more levels for filled contours than for line contours, because for the latter we need to specify the lower and upper boundary of each range. For example, a single contour boundary, say at z = 0, requires only one contour line, but two filled regions, and therefore three levels to provide boundaries for both regions. Nr" )Z min_n_ticksr rz r� r� � )r� r� r� r� Z MaxNLocatorZ tick_valuesr( r' Z _symmetric�AttributeErrorr Znonzeror) r� )r r$ rJ Zunderr Zover�i1r r r �_autolevt s* zContourSet._autolevc C s� | j dkr&t|�dkr d}q,|d }n| j }t|t�rD| �|�| _ nt�|��tj�| _ | j s�| j | j k| j | j k @ }| j | }t|�dkr�| j g| _ t � d� | j r�t| j �dk r�td��t| j �dkr�t�t�| j ��dkr�td ��dS ) zH Determine the contour levels and store in self.levels. Nr � z3No contour levels were found within the data range.rX z*Filled contours require at least 2 levels.r" g z!Contour levels must be increasing)r* r) rh r r0 r �asarrayr� �float64r� r( r' rD r r0 r� r� )r �zrG Z levels_argZinsideZ levels_inr r r �_contour_level_args� s( �$z ContourSet._contour_level_argsc C s� t | j�| _| jr d\}}nd\}}| jdkr<| j�d|� | jdkrR| j�|� t�| j�| _| j sr| j| _ dS | jr�t� | jdd� �t� | jdd� � | _ n"d | jdd� | jdd� | _ dS ) a& Assign values to :attr:`layers` based on :attr:`levels`, adding extended layers as needed if contours are filled. For line contours, layers simply coincide with levels; a line is a thin layer. No extended levels are needed with line contours. )gL��]?� �Ry��X�s)gRy��X��r6 �r� r� r �r� r� Nrz r" � �?) r+ r* r) r� r� �insertr/ r r2 r� �layersZsqrt)r r� r� r r r r� � s" �zContourSet._process_levelsc C s� | j j| _| jdk rvdt| j� }}| jrV|d8 }| jdkrD|d8 }| jdkrV|d7 }tt||��| _ | � t � � � n| j | _ | �| j� | �� | jdkr�d| j_dS )a Color argument processing for contouring. Note that we base the color mapping on the contour levels and layers, not on the actual range of the Z values. This means we don't have to worry about bad values in Z, and we always have the full dynamic range available for the selected levels. The color is based on the midpoint of the layer, except for extended end layers. By default, the norm vmin and vmax are the extreme values of the non-extended levels. Hence, the layer color extremes are not the extreme values of the colormap itself, but approach those values as the number of levels increases. An advantage of this scheme is that line contours, when added to filled contours, take on colors that are consistent with those of the filled regions; for example, a contour line on the boundary between two regions will have a color intermediate between those of the regions. Nr r" r7 r8 )r� r� r� F)r% � monochromer r) r* r� r� r+ r, r- Zset_normr: r> r; Z set_arrayZautoscale_Noner& Zclip)r r r/ r r r r� � s zContourSet._process_colorsc C s� | j }t| j�}|d kr,tjd fg| }nnt�|�sB|g| }nJt|�}t|�|k rttt� |t|� ��}|| }t|�|kr�|d |� }dd� |D �}|S )Nzlines.linewidthc S s g | ] }|f�qS r r )rY �wr r r r s z2ContourSet._process_linewidths.<locals>.<listcomp>) r� r) r* r� r� r r@ r+ r^ r� )r r� �Nlevr �nrepsr r r r s z ContourSet._process_linewidthsc C s� | j }t| j�}|d krjdg| }| jr�tjd }| j| j d }t| j�D ]\}}||k rN|||< qNntt |t �r�|g| }n^t � |�r�t |�}t|�|k r�tt �|t|� ��}|| }t|�|kr�|d |� }ntd��|S )NZsolidzcontour.negative_linestylegV瞯�<z&Unrecognized type for linestyles kwarg)r� r) r* r< r� r� r' r( r. rh ri r r@ r+ r^ r� r0 ) r r� r> r Zneg_lsZepsrI rJ r? r r r r ! s* z ContourSet._process_linestylesc C s | j S )z5returns alpha to be applied to all ContourSet artistsr� rM r r r r# : s zContourSet.get_alphac C s || _ | �� dS )z� Set the alpha blending value for all ContourSet artists. *alpha* must be between 0 (transparent) and 1 (opaque). N)r� r )r r� r r r r, > s zContourSet.set_alphaTc C s� |dkrt tt| j���}tj}d}d}d}d} t�||g�} |D ]�} | j| } | �� } | � � }t |�D ]X\}}|j }|r�| � |�}t || �\}}}||k rh|}| }|}|d }|d }|d } qhqB||||| |fS )a� Finds contour that is closest to a point. Defaults to measuring distance in pixels (screen space - useful for manual contour labeling), but this can be controlled via a keyword argument. Returns a tuple containing the contour, segment, index of segment, x & y of segment point and distance to minimum point. Optional keyword arguments: *indices*: Indexes of contour levels to consider when looking for nearest point. Defaults to using all levels. *pixel*: If *True*, measure distance in pixel space, if not, measure distance in axes space. Defaults to *True*. Nr" r )r+ r, r) r* r r� r r� r r� r. r� r� r� )r r r rH Zpixelr� r� r� r� r� r� r� r� r r� r� r� r� r� r� r� r� r r r r� F s2 z ContourSet.find_nearest_contour)NT)r r r r r� r r ri r% r� r� r r r r0 r5 r� r� r r r# r, r� r r r r r� � sD 9 � M C#+ %-r� c @ s< e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd Z d S )�QuadContourSeta� Create and store a set of contour lines or filled regions. User-callable method: `~axes.Axes.clabel` Attributes ---------- ax The axes object in which the contours are drawn. collections A silent_list of LineCollections or PolyCollections. levels Contour levels. layers Same as levels for line contours; half-way between levels for filled contours. See :meth:`_process_colors` method. c O s� t |d t�rn| jdkr$|d j| _|d j| _|d j| _|d j| _|d j}|d j| _|d j| _�nddl m } |� dd�| _| jdkr�t j d | _| �||�\}}}t�|�}|tjks�|�� s�d}|�|||�� || j| j�}| �� } | | jjk�rPt| �| jj���rP| | jj } t�|j |j g�j } | � | �} | d }| d }t� |�t� |�g| _t� |�t� |�g| _|| _|S )z* Process args and kwargs. r NZ corner_maskzcontour.corner_mask).r ).r" )!rh r@ r* r( r' Z _corner_maskr r r Zmatplotlib._contour�_contourr� r� r� � _contour_argsr ZgetmaskZnomaskrT ZQuadContourGeneratorr� r� r rs r� Zcontains_branch_seperatelyr ZvstackZflatr� r� r� r� ) r rG r Zcontour_generatorrA r r r4 Z_maskr� Z trans_to_dataZptsZtransformed_ptsr r r r� � sL �� z QuadContourSet._process_argsc C s� g }| j rV| �� \}}g }t||�D ].\}}| j�||�\}}|�|� |�|� q$n&d}| jD ]}| j�|�}|�|� q`||fS )z7Compute ``allsegs`` and ``allkinds`` using C extension.N)r� r r� r Zcreate_filled_contourr/ r* Zcreate_contour) r r� r r r� r r r� r r r r r� � s" �� z(QuadContourSet._get_allsegs_and_allkindsc C s | j r d}nd}t|�}|dkrPtj|d tjd�}| �|�\}}|dd � }n@|dkr�| �|d d� |�\}}}|dd � }ntd ||f ��tj |d d �}t |� � �| _ t |� � �| _| jr�| jdkr�t�|dk|�}t�d � t |� � �| _| �||� |||fS ) NZcontourfZcontourrX r r� r" r� r- z&Too many arguments to %s; see help(%s)F)r z,Log scale: values of z <= 0 have been masked)r� r) r r2 r r3 �_initialize_x_y� _check_xyzr2 Zmasked_invalidr� r� r' r� r( r� Z masked_whererD r r5 )r rG r �fnZNargsr4 r r r r r rB � s. � z QuadContourSet._contour_argsc C sz |dd� \}}| j j|||d�}| j �|�}| j �|�}tj|tjd�}tj|tjd�}tj|d tjd�}|jdkr�t d��n0|j d dk s�|j d dk r�t d��n |j \}}|j|jkr�t d ��|jdk�r|j \}|j \} ||kr�t d ��| |k�rt d ��t� ||�\}}nZ|jdk�rh|j |j k�rDt d � |j |j ���|j |j k�rpt d � |j |j ���nt d��|||fS )a For functions like contour, check that the dimensions of the input arrays match; if x and y are 1D, convert them to 2D using meshgrid. Possible change: I think we should make and use an ArgumentError Exception class (here and elsewhere). NrX )ZxdataZydatar r� zInput z must be a 2D array.r r" �%Input z must be at least a 2x2 array.z-Number of dimensions of x and y should match.z+Length of x must be number of columns in z.z(Length of y must be number of rows in z.z>Shape of x does not match that of z: found {0} instead of {1}.z>Shape of y does not match that of z: found {0} instead of {1}.z Inputs x and y must be 1D or 2D.) rs Z_process_unit_infoZconvert_xunitsZconvert_yunitsr r2 r3 r �ndimr2 r� �meshgridr1 ) r rG r r r r4 �Ny�NxZnxZnyr r r rD � sF � �zQuadContourSet._check_xyzc C s> |j dkrtd��n0|jd dk s0|jd dk r:td��n |j\}}| jdkr�| jdkrpt�t�|�t�|��S | j\}}}}t�|||�}t�|||�} t�|| �S | jdkr�d|d|f\}}}}n| j\}}}}|| | } || | } |t�|�d | }|t�|�d | } | jdk�r2| ddd � } t�|| �S ) a Return X, Y arrays such that contour(Z) will match imshow(Z) if origin is not None. The center of pixel Z[i,j] depends on origin: if origin is None, x = j, y = i; if origin is 'lower', x = j + 0.5, y = i + 0.5; if origin is 'upper', x = j + 0.5, y = Nrows - i - 0.5 If extent is not None, x and y will be scaled to match, as in imshow. If origin is None and extent is not None, then extent will give the minimum and maximum values of x and y. rX zInput must be a 2D array.r r" rF Nr9 r� rz ) rG r2 r� r� r� r rH r� Zlinspace) r r4 rI rJ Zx0Zx1Zy0Zy1r r r� r� r r r rC 1 s, z QuadContourSet._initialize_x_ya5$ Plot contours. Call signature:: contour([X, Y,] Z, [levels], **kwargs) `.contour` and `.contourf` draw contour lines and filled contours, respectively. Except as noted, function signatures and return values are the same for both versions. Parameters ---------- X, Y : array-like, optional The coordinates of the values in *Z*. *X* and *Y* must both be 2-D with the same shape as *Z* (e.g. created via `numpy.meshgrid`), or they must both be 1-D such that ``len(X) == M`` is the number of columns in *Z* and ``len(Y) == N`` is the number of rows in *Z*. If not given, they are assumed to be integer indices, i.e. ``X = range(M)``, ``Y = range(N)``. Z : array-like(N, M) The height values over which the contour is drawn. levels : int or array-like, optional Determines the number and positions of the contour lines / regions. If an int *n*, use *n* data intervals; i.e. draw *n+1* contour lines. The level heights are automatically chosen. If array-like, draw contour lines at the specified levels. The values must be in increasing order. Returns ------- c : `~.contour.QuadContourSet` Other Parameters ---------------- corner_mask : bool, optional Enable/disable corner masking, which only has an effect if *Z* is a masked array. If ``False``, any quad touching a masked point is masked out. If ``True``, only the triangular corners of quads nearest those points are always masked out, other triangular corners comprising three unmasked points are contoured as usual. Defaults to :rc:`contour.corner_mask`, which defaults to ``True``. colors : color string or sequence of colors, optional The colors of the levels, i.e. the lines for `.contour` and the areas for `.contourf`. The sequence is cycled for the levels in ascending order. If the sequence is shorter than the number of levels, it's repeated. As a shortcut, single color strings may be used in place of one-element lists, i.e. ``'red'`` instead of ``['red']`` to color all levels with the same color. This shortcut does only work for color strings, not for other ways of specifying colors. By default (value *None*), the colormap specified by *cmap* will be used. alpha : float, optional The alpha blending value, between 0 (transparent) and 1 (opaque). cmap : str or `.Colormap`, optional A `.Colormap` instance or registered colormap name. The colormap maps the level values to colors. Defaults to :rc:`image.cmap`. If both *colors* and *cmap* are given, an error is raised. norm : `~matplotlib.colors.Normalize`, optional If a colormap is used, the `.Normalize` instance scales the level values to the canonical colormap range [0, 1] for mapping to colors. If not given, the default linear scaling is used. vmin, vmax : float, optional If not *None*, either or both of these values will be supplied to the `.Normalize` instance, overriding the default color scaling based on *levels*. origin : {*None*, 'upper', 'lower', 'image'}, optional Determines the orientation and exact position of *Z* by specifying the position of ``Z[0, 0]``. This is only relevant, if *X*, *Y* are not given. - *None*: ``Z[0, 0]`` is at X=0, Y=0 in the lower left corner. - 'lower': ``Z[0, 0]`` is at X=0.5, Y=0.5 in the lower left corner. - 'upper': ``Z[0, 0]`` is at X=N+0.5, Y=0.5 in the upper left corner. - 'image': Use the value from :rc:`image.origin`. extent : (x0, x1, y0, y1), optional If *origin* is not *None*, then *extent* is interpreted as in `.imshow`: it gives the outer pixel boundaries. In this case, the position of Z[0,0] is the center of the pixel, not a corner. If *origin* is *None*, then (*x0*, *y0*) is the position of Z[0,0], and (*x1*, *y1*) is the position of Z[-1,-1]. This argument is ignored if *X* and *Y* are specified in the call to contour. locator : ticker.Locator subclass, optional The locator is used to determine the contour levels if they are not given explicitly via *levels*. Defaults to `~.ticker.MaxNLocator`. extend : {'neither', 'both', 'min', 'max'}, optional, default: 'neither' Determines the ``contourf``-coloring of values that are outside the *levels* range. If 'neither', values outside the *levels* range are not colored. If 'min', 'max' or 'both', color the values below, above or below and above the *levels* range. Values below ``min(levels)`` and above ``max(levels)`` are mapped to the under/over values of the `.Colormap`. Note, that most colormaps do not have dedicated colors for these by default, so that the over and under values are the edge values of the colormap. You may want to set these values explicitly using `.Colormap.set_under` and `.Colormap.set_over`. .. note:: An exising `.QuadContourSet` does not get notified if properties of its colormap are changed. Therefore, an explicit call `.QuadContourSet.changed()` is needed after modifying the colormap. The explicit call can be left out, if a colorbar is assigned to the `.QuadContourSet` because it internally calls `.QuadContourSet.changed()`. Example:: x = np.arange(1, 10) y = x.reshape(-1, 1) h = x * y cs = plt.contourf(h, levels=[10, 30, 50], colors=['#808080', '#A0A0A0', '#C0C0C0'], extend='both') cs.cmap.set_over('red') cs.cmap.set_under('blue') cs.changed() xunits, yunits : registered units, optional Override axis units by specifying an instance of a :class:`matplotlib.units.ConversionInterface`. antialiased : bool, optional Enable antialiasing, overriding the defaults. For filled contours, the default is *True*. For line contours, it is taken from :rc:`lines.antialiased`. Nchunk : int >= 0, optional If 0, no subdivision of the domain. Specify a positive integer to divide the domain into subdomains of *nchunk* by *nchunk* quads. Chunking reduces the maximum length of polygons generated by the contouring algorithm which reduces the rendering workload passed on to the backend and also requires slightly less RAM. It can however introduce rendering artifacts at chunk boundaries depending on the backend, the *antialiased* flag and value of *alpha*. linewidths : float or sequence of float, optional *Only applies to* `.contour`. The line width of the contour lines. If a number, all levels will be plotted with this linewidth. If a sequence, the levels in ascending order will be plotted with the linewidths in the order specified. Defaults to :rc:`lines.linewidth`. linestyles : {*None*, 'solid', 'dashed', 'dashdot', 'dotted'}, optional *Only applies to* `.contour`. If *linestyles* is *None*, the default is 'solid' unless the lines are monochrome. In that case, negative contours will take their linestyle from :rc:`contour.negative_linestyle` setting. *linestyles* can also be an iterable of the above strings specifying a set of linestyles to be used. If this iterable is shorter than the number of contour levels it will be repeated as necessary. hatches : List[str], optional *Only applies to* `.contourf`. A list of cross hatch patterns to use on the filled areas. If None, no hatching will be added to the contour. Hatching is supported in the PostScript, PDF, SVG and Agg backends only. Notes ----- 1. `.contourf` differs from the MATLAB version in that it does not draw the polygon edges. To draw edges, add line contours with calls to `.contour`. 2. `.contourf` fills intervals that are closed at the top; that is, for boundaries *z1* and *z2*, the filled region is:: z1 < Z <= z2 except for the lowest interval, which is closed on both sides (i.e. it includes the lowest value). N) r r r r r� r� rB rD rC Z _contour_docr r r r r@ � s 07(r@ )1r Znumbersr Znumpyr r Z matplotlibr� Zmatplotlib.path�pathr� Zmatplotlib.tickerr� Z matplotlib.cmr< Zmatplotlib.colorsr r: Zmatplotlib.collectionsr� r Zmatplotlib.font_managerr5 Zmatplotlib.textr Zmatplotlib.cbookrD Zmatplotlib.mathtextrm Zmatplotlib.patchesZpatchesr" Zmatplotlib.texmanagerrl Zmatplotlib.transformsZ transformsr Zmatplotlib.blocking_inputr r r �objectr r� r� r� r= r� r@ r r r r �<module> sB R # F