3 ƽh @sdZddlmZddlZddlmZddlZddlj Z ddl j Z ddl jZddljZddljZddljZddljZddljZddljZddljZddl j!Z!ddl"j#Z$ddl%m&Z&Gdddej'Z(Gdd d Z)d d Z*d d Z+ddZ,Gdddej-e)Z.Gddde.Z/dS)zG Classes to support contour plotting and labelling for the Axes class. )IntegralN)ma)BlockingContourLabelerc@seZdZdZddZdS) ClabelTextz Unlike the ordinary text, the get_rotation returns an updated angle in the pixel coordinate assuming that the input rotation is an angle in data coordinate (or whatever transform set). cCs&|jjtjj|g|jg\}|S)N) get_transformtransform_anglestextText get_rotation get_position)selfZ new_angler 8/tmp/pip-build-7iwl8md4/matplotlib/matplotlib/contour.pyr *szClabelText.get_rotationN)__name__ __module__ __qualname____doc__r r r r rr#src @seZdZdZd+dddddddddd dd Zd d Zd d ZddZddZddZ ddZ ddZ d,ddZ ddZ ddZddZd d!Zd"d#Zd-d$d%Zd/d'd(Zd)d*ZdS)0ContourLabelerz7Mixin to provide labelling capability to `.ContourSet`.NTz%1.3fF) fontsizeinlineinline_spacingfmtcolorsuse_clabeltextmanual rightside_upzorderc Cs||_||_||_| |_| dkr.d|j|_n| |_|dkrV|j}ttt |j } nlt|} gg} }x2t |jD]$\} }|| krt| j | |j |qtWt |t | krt d| d|j||_| |_tj|_|jj||jj}|gt ||_|dkr"||_tj|j |j|_nsz+ContourLabeler.too_close..)rKr;)r rFrGlwr )rRrFrGr too_closes zContourLabeler.too_closec Cst|d}tj|}x>|D]6}||||||} } |j| | |rJq| | |fSW|d}||||||} } | | |fS)a Return x, y, and the index of a label location. Labels are plotted at a location with the smallest deviation of the contour from a straight line unless there is another label nearby, in which case the next best place on the contour is picked up. If all such candidates are rejected, the beginning of the contour is chosen. rr)intr4ZargsortrU) r Z distancesXXYYysizerTZhysizeZadistindrFrGr r rget_label_coordss    zContourLabeler.get_label_coordscCst|ts|j||}tjj|\}}|dkrHtjj||\}}}nR|rt |dsbt j d|_ |j j |d|jd\}}tj|\}}nt||d}|S)z: Return the width of the label in points. ZTeX_mathtext_parserZbitmapH)dpipropg333333?) isinstancestrget_textrr Z_preprocess_math texmanagerZ TexManagerZget_text_width_height_descenthasattrmathtextZMathTextParserr\parser1r4shaper))r rErfsizeZismathrT_imgr r rget_label_widths     zContourLabeler.get_label_widthcCs2|j||j||j|j|j|jjdS)z1Set the label properties - color, fontsize, text.N)Zset_text set_colorZset_fontpropertiesr1Z set_clip_boxaxesZbbox)r labelrcolorr r rset_label_propss   zContourLabeler.set_label_propscCs@t|tr|St|tr$|j|dSt|r4||S||SdS)zGet the text of the label.z%1.3fN)r`radictgetcallable)r rErr r rrb s   zContourLabeler.get_textc Csjt|}|dkr$ttj||}nd}|dkr6|}nt|}tj|dddf||f}tj|dddf||f}|ddddf}|ddd df} |ddddf} |ddd df} ||| | | || |} tj| | | |} tjdddtjtj| | d d}WdQRX|j |||||\}}}dd|D}|j ||f}|||fS) zX Find good place to draw a label (relatively flat part of the contour). rONrignore)divideinvalid)rJcSsg|] }t|qSr )tuple)rPlr r r 5sz/ContourLabeler.locate_label..rzrz) r)rVr4ceilresizehypotZerrstatesumabsr[index)r rLrMZnsizeZxsizerYrWrXZyfirstZylastZxfirstZxlastsLdistrFrGrZlcZdindr r r locate_labels* "zContourLabeler.locate_labelcs|dkr g}|d}t|}|rptj||d|d|dg}t|rltj||d|d|dg}d}tj|jdtdtj|dd}tjtj |dddf|dddfdd<|tj | |g|rtj ddgn tj fdd|j D\\}\} tj tj| |} |jrL| d d d } g} t|rtj | |gtjtjtddd } tj| djttj| djtg} | ddkr܇fd d |j D} | ddkrfdd |j D}|rFtdd| Dr| jtj||| d| dd| gn`| ddkrx| jtj|d| dd| g| ddkr| jtj||| ddg| | fS)a Calculate the appropriate label rotation given the linecontour coordinates in screen units, the index of the label location and the label width. If *lc* is not None or empty, also break contours and compute inlining. *spacing* is the empty space to leave around the label, in pixels. Both tasks are done together to avoid calculating path lengths multiple times, which is relatively costly. The method used here involves computing the path length along the contour in pixel coordinates and then looking approximately (label width / 2) away from central point to determine rotation and then to break contour if desired. Ng@rOr)dtype)rJc3s&|]}tjtj|VqdS)N)r4diffinterp)rPZslc_col)dpplxir rrSjsz;ContourLabeler.calc_label_rot_and_inline..Z)leftrightcsg|]}tjd|qS)r)r4r)rPlc_col)rrr rry}sz.csg|]}tjd|qS)rO)r4r)rPr)rrr rryscss|]}|dkVqdS)rONrzr )rPrDr r rrSsrzrzrzrzrzrzrzrzrz)_is_closed_polygonr4 concatenater)zerosrgfloatrZcumsumr}arrayZ zeros_likeTZrad2degZarctan2rrarangefloorastyperVr{allr, row_stack)r slcrZrTrspacingZhlwcloseddxdyrotationnlcIZxy1Zxy2r )rrrrcalc_label_rot_and_inline:sN""2   (,$ z(ContourLabeler.calc_label_rot_and_inlinecCs6|jjjj||f\}}tj|||dd|jd}|S)Ncenter)rhorizontalalignmentverticalalignmentr)rm transDatainverted transformrr r%)r rFrGrrrtr r r_get_label_texts   zContourLabeler._get_label_textc Cs\|jjj}|j||f\}}|jtj|gtj||gg}t|||ddd|jd}|S)Nrr)rrrr) rmrrrrr4rrr%) r rFrGrZ transDataInvrrZ drotationrr r r_get_label_clabeltexts   z$ContourLabeler._get_label_clabeltextcCsf|jj||jd}|j||j}|j||||jj||jj||j j||f|j j |dS)N)alpha) r3to_rgbarrbr"rprBr, labelCValuesr;rmZ add_artist)r rrFrGrEcvalueroZ_textr r r _add_labels  zContourLabeler._add_labelcCs$|j|||}|j|||||dS)zO Add contour label using :class:`~matplotlib.text.Text` class. N)rr)r rFrGrrErrr r r add_labelszContourLabeler.add_labelcCs$|j|||}|j|||||dS)zD Add contour label using :class:`ClabelText` class. N)rr)r rFrGrrErrr r radd_label_clabeltextsz#ContourLabeler.add_label_clabeltextcCs|dkr|jj}|r&|j||f\}}|j|||jdd\}}}} } |j|j} | |} | j} |jjjj| | g}t j || |st j | d||| |dg} t j | | |<|jj|}|j|j} | |j} |jjj| }|j|j||j|j|}||jjjd9}|j||||r,| nd|\}}|j| | ||j||j||r| j|x,|D]$}t|dkrl| jt j |qlWdS)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, default: True If *True* remove the segment of the contour beneath the label. inline_spacing : int, 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. Nrr]rO)rmrrfind_nearest_contourr/ collections get_pathsverticesrr4allclosermpathPathrrkr.r"r2figurer^rrr5popr)r,)r rFrGrrrconminsegminiminxminyminpathsZ active_pathrxcminZlminrrTrrnr r rr=s:       zContourLabeler.add_label_nearrOcCs$|jj||jj|}|jdS)z>Defaults to removing last label, but any index can be suppliedN)rrrBremove)r rrr r r pop_labels  zContourLabeler.pop_labelcCsl|jr|j}n|j}xPt|j|j|j|jD]4\}}}}|j|}|j } |j ||j |} | |j j jd9} g} |j} xt| D]\} }|j}| j|}t|rtj||ddg}n|}|j|| rF|j|| \}}}|j||| |r|nd|\}}|||||||rPx8|D]$}t|dkr| jtj|qWq| j|qW|r.| | dd<q.WdS)Nr]rOr)r#rrzipr/r.r2r5rrrkr"rmrr^rr+rrrr4rrNrrr)r,rr)r rrriconrErhrcontransrTZ additionsrsegNumlinepathrZslc0rrFrGrZrnewrr r rr?"s<   zContourLabeler.labels)N)Nr)TrNrz)rz)rrrrrHrNrUr[rkrprbrrrrrrrr=rr?r r r rr0s. $ Z   S rcCstj||kr(tj||d}||fS||}||}tj||tj||}|dkr\d}|dkrhd}|||}tj||d}||fS)zBFind the closest point to p0 on line segment connecting p1 and p2.rrrO)r4rr~dot)p1p2Zp0dZd21Zd01projZpcr r r_find_closest_point_on_legYs rcCstj|d|ddddS)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. rrOg|=gvIh%<=)ZrtolZatolrz)r4r)Xr r rrrsrc Cstj||dddfdd}tj|}tj}d}d}t|}g}|dksP|rj|j|dt||f|t|dks~|r|j||dt|fx@|D]8} t|| d|| d|\} } | |kr| }| }| }qW|||fS)zj Parameters ---------- lc : coordinates of vertices point : coordinates of test point NrrOr)NN)r4r~Zargmininfrr,r)r) rpointZdsrdminrZlegminrZlegslegrxcr r r_find_closest_point_on_path{s$     rc@seZdZdZddddd0ddddddddddddddddZejd ed d Zd d Z ddZ de fddZ ddZ ddZddZddZddZddZdd Zd!d"Zd#d$Zd%d&Zd'd(Zd)d*Zd+d,Zd1d.d/ZdS)2 ContourSeta Store a set of contour lines or filled regions. User-callable method: `~.Axes.clabel` Parameters ---------- ax : `~.axes.Axes` levels : [level0, level1, ..., leveln] A list of floating point numbers indicating the contour levels. allsegs : [level0segs, level1segs, ...] List of all the polygon segments for all the *levels*. For contour lines ``len(allsegs) == len(levels)``, and for filled contour regions ``len(allsegs) = len(levels)-1``. The lists should look like :: level0segs = [polygon0, polygon1, ...] polygon0 = [[x0, y0], [x1, y1], ...] allkinds : ``None`` or [level0kinds, level1kinds, ...] Optional list of all the polygon vertex kinds (code types), as described and used in Path. This is used to allow multiply- connected paths such as holes within filled polygons. If not ``None``, ``len(allkinds) == len(allsegs)``. The lists should look like :: level0kinds = [polygon0kinds, ...] polygon0kinds = [vertexcode0, vertexcode1, ...] If *allkinds* is not ``None``, usually all polygons for a particular contour level are grouped together so that ``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``. **kwargs Keyword arguments are as described in the docstring of `~.Axes.contour`. Attributes ---------- ax The axes object in which the contours are drawn. collections A silent_list of LineCollections or PolyCollections. levels Contour levels. layers Same as levels for line contours; half-way between levels for filled contours. See :meth:`_process_colors`. NFZneitherr)r&filled linewidths linestyleshatchesroriginextentr rr!vminvmaxextend antialiasednchunklocatorrc+ Os||_||_||_||_||_||_||_||_| |_| |_ ||_ ||_ |j dkr^|jr^d|_ ||_ ||_ t| tjst|j tjrd|_| dkrtj} nd|_tjddddg|d|jdk rt|jdkrtd |j dk r| dk rtd |jdkr tjd |_||_|j||}|j|j dk rt|j}|jrJ|d 8}d }|j d!k}|j d"k}d}|t|t|}t|j |kr|s|rd}|rd }tj|j |d|d} |r|r| j|j d |r| j |j d#|jrtj!d|_"n tj!d|_"g|_#g|_$d| i}| dk r6| |d<t%j&j'|f|| dk rX| |j(_)|dk rj||j(_*|j+|j,\|_-|_.|jrJ|jdk rtj/d|j0\}}|j.dkrdgt|j-|_.|j1dd |_2xnt3|||j-|j.D]X\}} }!}"|j4|!|"}#t5j6|#|j fd|j|j7|j2d}$|jj8|$dd|j"j9|$qWn|j:}%|%|_;|j<}&|j }'|'dk rx|j f}'|j1dd|_2xlt3|j|%|&|j-D]V\}}(})}!t5j=|!|'|(|)g|j|j7|j2d}$|$j>d|jj8|$dd|j"j9|$qWxP|j"D]F}$|j?d |j@d g|$jAjBdd<|j?d |j@d g|$jAjCdd<qW|jjD|j?|j@g|jjEdd|jF|rdjGtHtI|}*tj/d |*dS)$a Draw contour lines or filled regions, depending on whether keyword arg *filled* is ``False`` (default) or ``True``. Call signature:: ContourSet(ax, levels, allsegs, [allkinds], **kwargs) Parameters ---------- ax : `~.axes.Axes` The `~.axes.Axes` object to draw on. levels : [level0, level1, ..., leveln] A list of floating point numbers indicating the contour levels. allsegs : [level0segs, level1segs, ...] List of all the polygon segments for all the *levels*. For contour lines ``len(allsegs) == len(levels)``, and for filled contour regions ``len(allsegs) = len(levels)-1``. The lists should look like :: level0segs = [polygon0, polygon1, ...] polygon0 = [[x0, y0], [x1, y1], ...] allkinds : [level0kinds, level1kinds, ...], optional Optional list of all the polygon vertex kinds (code types), as described and used in Path. This is used to allow multiply- connected paths such as holes within filled polygons. If not ``None``, ``len(allkinds) == len(allsegs)``. The lists should look like :: level0kinds = [polygon0kinds, ...] polygon0kinds = [vertexcode0, vertexcode1, ...] If *allkinds* is not ``None``, usually all polygons for a particular contour level are grouped together so that ``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``. **kwargs Keyword arguments are as described in the docstring of `~.Axes.contour`. NFTlowerupperimage)rz3If given, 'extent' must be None or (x0, x1, y0, y1)z"Either colors or cmap must be Nonez image.originrOrminbothmax)rzmcoll.PathCollectionzmcoll.LineCollectionr r!z!linewidths is ignored by contourfrnone) antialiasedsZ edgecolorsrrr)Zautolimr)rrrrrrZ _nolegend_)Ztightz, z/The following kwargs were not used by contour: )rr)rrrz)Jrmr&rrrrrrrrrrrrr`r6ZLogNormticker LogLocatorlogscaler@Z_check_in_listr)r-mplrcParams _transform _process_args_process_levelsrVr7Z set_underZset_overrArrBrr8r9__init__r!rr_process_colors_get_allsegs_and_allkindsallsegsallkinds_warn_external_get_lowers_and_uppersrr$r _make_pathsmcollZPathCollectionrZadd_collectionr,_process_linewidths tlinewidths_process_linestylesLineCollectionZ set_label_mins_maxsZ sticky_edgesrFrGZupdate_datalimZautoscale_viewchangedjoinmaprepr)+r axr&rrrrrrrr rr!rrrrrrrargskwargsZncolorsi0Z extend_minZ extend_maxZuse_set_under_overZ total_levelskwlowersupperslevel level_uppersegskindsrcolr tlinestylesZaawidthZlstylerr r rrs3                        &zContourSet.__init__z3.3cCs|jS)N)rm)r r r rr sz ContourSet.axcCsH|jdkr|jj|_n,t|jtj rBt|jdrB|jj|j|_|jS)zp Return the :class:`~matplotlib.transforms.Transform` instance used by this ContourSet. N_as_mpl_transform)rrmrr` mtransformsZ Transformrdr)r r r rrs    zContourSet.get_transformcCs|jj}d|d<|S)N_contour_generator)__dict__copy)r stater r r __getstate__s zContourSet.__getstate__rFc Cslg}g}|jr|j\}}t|j}xtt|j||D]\}\} } } tjddd| jd| j | j d} |j | || } || } |dkr|j dkr|j d|d| dq:||dkr|j dkr|j d|d | dq:|j d| d |d| dq:Wn\xZt|j|j D]H\} } tjd } | j| |j | || } |j d|d | dqW||fS)a Return a list of artists and labels suitable for passing through to `~.Axes.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. rrO)Z facecolorhatchrrr$z \leq zs$rz > z < Nz = )rr)rr)rr)rrr)rr+rmpatchesZ RectangleZ get_facecolorZ get_hatch get_alphar,rr&rrZ update_from)r Z variable_nameZ str_formatZartistsr?rrZn_levelsrD collectionrrpatchrr r rlegend_elementss6     $   zContourSet.legend_elementscOs|d|_|d|_t|dkr(|dnd|_tj|j|_tj|j|_|j rrt|jt|jdkrt dnt|jt|jkrt d|jdk rt|jt|jkrt ddd |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. rrOrNz-must be one less number of segments as levelsz)must be same number of segments as levelsz(allkinds has different length to allsegscSsg|]}|D]}|q qSr r )rPsegrr r rrysz,ContourSet._process_args..)rJ)r&rr)rr4rzmaxrzminrr-rrr)r rrZ flatseglistZpointsr r rrs$    zContourSet._process_argscCs |j|jfS)zv Override in derived classes to create and return allsegs and allkinds. allkinds can be None. )rr)r r r rrsz$ContourSet._get_allsegs_and_allkindscCs`|jdd}|j|dkrJ|j}|jr:d|j|d<n|dd8<|jdd}||fS)zB Return ``(lowers, uppers)`` for filled contours. NrOrgGz?rz)_levelsr+rr)r rrr r rr$sz!ContourSet._get_lowers_and_upperscCs.|dk rddt||DSdd|DSdS)NcSsg|]\}}tj||dqS))codes)rr)rPr)kindr r rry5sz*ContourSet._make_paths..cSsg|]}tj|qSr )rr)rPr)r r rry8s)r)r rrr r rr3szContourSet._make_pathscCsdd|j|j|jdD}||_|jt|}xBt|||jD]0\}}}|jrf|j ||j |q@|j |q@Wx8t|j |j D]&\}}|j|j|j |jj|qWtjj|dS)NcSsg|]}t|fqSr )rw)rPZrgbar r rry;sz&ContourSet.changed..)r)rr*rtcolorsrr)rrrZ set_facecolorZ set_hatchrlrBr set_alphar3r8r9r )r r/rror"r&rnZcvr r rr :s   zContourSet.changedc Cs |jdkr0|jrtj|_ntj|ddd|_|jj|j|j}y|jjrP|SWnt k rfYnXt j ||jkd}t |r|d nd}t j ||jkd}t |r|ddnt |}|j d kr|d7}|j d kr|d8}||dkrdt |}}|||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. 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Nrz3No contour levels were found within the data range.rz*Filled contours require at least 2 levels.rOgz!Contour levels must be increasing)r&r)r`rr4r4asarrayrfloat64rr+r*r@rr-rr)r rZ levels_argZinsideZ levels_inr r r_process_contour_level_argsxs&       $z&ContourSet._process_contour_level_argscCst|j|_|jrd \}}nd \}}|jd kr<|jjd||jdkrR|jj|tj|j|_|j sr|j|_ dS|jrtj |jddtj |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. L]? RyXsrrrrNrOg?)r9r:RyX)r;r:)rr)rrrzrz) r'r&r,rrinsertr,r4r6rlayerssqrt)r rrr r rrs     zContourSet._process_levelscCs|jj|_|jdk rvdt|j}}|jrV|d8}|jdkrD|d8}|jd krV|d7}tt|||_ |j t j n|j |_ |j|j|j|jd krd|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. NrrOrrrF)rr)rr)rrr)r monochromerr)r&rrr'r(r*Zset_normr6r:r=Z set_arrayZautoscale_Noner!Zclip)r rr3r r rrs       zContourSet._process_colorscCs|j}t|j}|dkrBtjd}|dkr4tjd}|fg|}nntj|sX|g|}nJt|}t||krttj |t|}||}t||kr|d|}dd|D}|S)Nzcontour.linewidthzlines.linewidthcSsg|] }|fqSr r )rPwr r rrysz2ContourSet._process_linewidths..) rr)r&rrr4r<r'rVr{)r rNlevZdefault_linewidthrnrepsr r rrs"        zContourSet._process_linewidthsc Cs|j}t|j}|dkrndg|}|jrtjd}|j|j d}xt|jD]\}}||krP|||<qPWntt |t r|g|}n^t j |rt |}t||krtt j|t|}||}t||kr|d|}ntd|S)NZsolidzcontour.negative_linestylegV瞯            zQuadContourSet._process_argsc Csg}|jrZ|j\}}g}xht||D].\}}|jj||\}}|j||j|q&Wn*d}x$|jD]}|jj|}|j|qfW||fS)z7Compute ``allsegs`` and ``allkinds`` using C extension.N)rrrrZcreate_filled_contourr,r&Zcreate_contour) r rrrrrrrrr r rrs     z(QuadContourSet._get_allsegs_and_allkindscCs|jr d}nd}t|}|dkrPtj|dtjd}|j|\}}|dd}n@|dkr|j|dd|\}}}|dd}ntd ||ftj |d d }t |j |_ t |j |_|jr|jdkrtj|dk|}tjd t |j |_|j||||fS) NZcontourfZcontourrr)rrOrr1z&Too many arguments to %s; see help(%s)F)rz,Log scale: values of z <= 0 have been masked)rr)rr6r4r7_initialize_x_y _check_xyz TypeErrorZmasked_invalidrrr*rr+rZ masked_wherer@rr8)r rrfnZNargsrIrFrGr r rrHs,   zQuadContourSet._contour_argsc Cs|dd\}}|jj|||d}|jj|}|jj|}tj|tjd}tj|tjd}tj|dtjd}|jdkrt d|jd|j ddks|j ddkrt d |j |j \}}|j|jkrt d |jd |jd |jdkrT|j \}|j \} ||kr"t d |d|d| |krBt d| d|dtj ||\}}np|jdkr|j |j krt d|j d|j d|j |j krt d|j d|j dnt d|jd|||fS)z Check that the shapes of the input arrays match; if x and y are 1D, convert them to 2D using meshgrid. Nr)ZxdataZydatar)rzInput z must be 2D, not DrrOz>Input z must be at least a (2, 2) shaped array, but has shape zNumber of dimensions of x (z ) and y (z) do not matchz Length of x (z%) must match number of columns in z ()z Length of y (z") must match number of rows in z (z Shapes of x z and z z do not matchz Shapes of y z%Inputs x and y must be 1D or 2D, not ) rmZ_process_unit_infoZconvert_xunitsZconvert_yunitsr4r6r7rndimrLrgmeshgrid) r rrrFrGrINyNxZnxnyr r rrKs>         zQuadContourSet._check_xyzc CsP|jdkrtd|jdn8|jddks:|jddkrLtd|jn |j\}}|jdkr|jdkrtjtj|tj|S|j\}}}}tj|||}tj|||} tj|| S|jdkrd|d|f\}}}}n|j\}}}}|||} |||} |tj|d| }|tj|d| } |jd krD| ddd } tj|| 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. rzInput z must be 2D, not rNrrOz>Input z must be at least a (2, 2) shaped array, but has shape Ng?rrz) rPrLrgrrr4rQrZlinspace) r rIrRrSZx0x1Zy0y1rFrGrrr r rrJs,         zQuadContourSet._initialize_x_ya:$ 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 `~matplotlib.ticker.MaxNLocator`, which tries to automatically choose no more than *n+1* "nice" contour levels between *vmin* and *vmax*. If array-like, draw contour lines at the specified levels. The values must be in increasing order. Returns ------- `~.contour.QuadContourSet` Other Parameters ---------------- corner_mask : bool, default: :rc:`contour.corner_mask` 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. 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, default: 1 The alpha blending value, between 0 (transparent) and 1 (opaque). cmap : str or `.Colormap`, default: :rc:`image.cmap` A `.Colormap` instance or registered colormap name. The colormap maps the level values to colors. 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'}, default: None 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'}, 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 existing `.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 array-like, default: :rc:`contour.linewidth` *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. If None, this falls back 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). ) rrrrrrrHrKrJZ _contour_docr r r rrEls0.{rE)0rnumbersrnumpyr4rZ matplotlibrZmatplotlib.pathpathrZmatplotlib.tickerrZ matplotlib.cmr8Zmatplotlib.colorsrr6Zmatplotlib.collectionsrrZmatplotlib.font_managerr0Zmatplotlib.textrZmatplotlib.cbookr@Zmatplotlib.mathtextreZmatplotlib.patchesZpatchesr$Zmatplotlib.texmanagerrcZmatplotlib.transformsZ transformsrZmatplotlib.blocking_inputrr rrrrrr9rrEr r r rsB                - #S