matplotlib.backends.backend_ps
¶A PostScript backend, which can produce both PostScript .ps and .eps
matplotlib.backends.backend_ps.
FigureCanvas
¶matplotlib.backends.backend_ps.
FigureCanvasPS
(figure)[source]¶Bases: matplotlib.backend_bases.FigureCanvasBase
filetypes
= {u'eps': u'Encapsulated Postscript', u'ps': u'Postscript'}¶fixed_dpi
= 72¶matplotlib.backends.backend_ps.
FigureManager
¶matplotlib.backends.backend_ps.
PsBackendHelper
[source]¶Bases: object
gs_exe
¶executable name of ghostscript.
gs_version
¶version of ghostscript.
supports_ps2write
¶True if the installed ghostscript supports ps2write device.
matplotlib.backends.backend_ps.
RendererPS
(width, height, pswriter, imagedpi=72)[source]¶Bases: matplotlib.backend_bases.RendererBase
The renderer handles all the drawing primitives using a graphics context instance that controls the colors/styles.
Although postscript itself is dpi independent, we need to imform the image code about a requested dpi to generate high res images and them scale them before embeddin them
afmfontd
= {}¶draw_image
(gc, x, y, im, transform=None)[source]¶Draw the Image instance into the current axes; x is the distance in pixels from the left hand side of the canvas and y is the distance from bottom
draw_markers
(gc, marker_path, marker_trans, path, trans, rgbFace=None)[source]¶Draw the markers defined by path at each of the positions in x and y. path coordinates are points, x and y coords will be transformed by the transform
draw_path
(gc, path, transform, rgbFace=None)[source]¶Draws a Path instance using the given affine transform.
draw_path_collection
(gc, master_transform, paths, all_transforms, offsets, offsetTrans, facecolors, edgecolors, linewidths, linestyles, antialiaseds, urls, offset_position)[source]¶get_image_magnification
()[source]¶Get the factor by which to magnify images passed to draw_image. Allows a backend to have images at a different resolution to other artists.
get_text_width_height_descent
(s, prop, ismath)[source]¶get the width and height in display coords of the string s with FontPropertry prop
matplotlib.backends.backend_ps.
convert_psfrags
(tmpfile, psfrags, font_preamble, custom_preamble, paperWidth, paperHeight, orientation)[source]¶When we want to use the LaTeX backend with postscript, we write PSFrag tags to a temporary postscript file, each one marking a position for LaTeX to render some text. convert_psfrags generates a LaTeX document containing the commands to convert those tags to text. LaTeX/dvips produces the postscript file that includes the actual text.
matplotlib.backends.backend_ps.
get_bbox
(tmpfile, bbox)[source]¶Use ghostscript's bbox device to find the center of the bounding box. Return an appropriately sized bbox centered around that point. A bit of a hack.
matplotlib.backends.backend_ps.
get_bbox_header
(lbrt, rotated=False)[source]¶return a postscript header stringfor the given bbox lbrt=(l, b, r, t). Optionally, return rotate command.
matplotlib.backends.backend_ps.
gs_distill
(tmpfile, eps=False, ptype=u'letter', bbox=None, rotated=False)[source]¶Use ghostscript's pswrite or epswrite device to distill a file. This yields smaller files without illegal encapsulated postscript operators. The output is low-level, converting text to outlines.
matplotlib.backends.backend_ps.
pstoeps
(tmpfile, bbox=None, rotated=False)[source]¶Convert the postscript to encapsulated postscript. The bbox of the eps file will be replaced with the given bbox argument. If None, original bbox will be used.
matplotlib.backends.backend_ps.
quote_ps_string
(s)[source]¶Quote dangerous characters of S for use in a PostScript string constant.
matplotlib.backends.backend_ps.
xpdf_distill
(tmpfile, eps=False, ptype=u'letter', bbox=None, rotated=False)[source]¶Use ghostscript's ps2pdf and xpdf's/poppler's pdftops to distill a file. This yields smaller files without illegal encapsulated postscript operators. This distiller is preferred, generating high-level postscript output that treats text as text.