Revision: 6644
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6644&view=rev
Author: jdh2358
Date: 2008-12-17 12:51:22 +0000 (Wed, 17 Dec 2008)
Log Message:
-----------
added Jouni's pdf image dpi patch; apply fix to figimage
Modified Paths:
--------------
branches/v0_98_5_maint/examples/pylab_examples/figimage_demo.py
branches/v0_98_5_maint/lib/matplotlib/backends/backend_pdf.py
branches/v0_98_5_maint/lib/matplotlib/figure.py
branches/v0_98_5_maint/lib/matplotlib/image.py
Modified: branches/v0_98_5_maint/examples/pylab_examples/figimage_demo.py
===================================================================
--- branches/v0_98_5_maint/examples/pylab_examples/figimage_demo.py
2008-12-17 11:20:35 UTC (rev 6643)
+++ branches/v0_98_5_maint/examples/pylab_examples/figimage_demo.py
2008-12-17 12:51:22 UTC (rev 6644)
@@ -15,6 +15,11 @@
im1 = plt.figimage(Z, xo=50, yo=0, cmap=cm.jet, origin='lower')
im2 = plt.figimage(Z, xo=100, yo=100, alpha=.8, cmap=cm.jet, origin='lower')
+dpi = 200
+plt.savefig('figimage.png', dpi=dpi)
+plt.savefig('figimage.pdf', dpi=dpi)
+plt.savefig('figimage.svg', dpi=dpi)
+plt.savefig('figimage.eps', dpi=dpi)
plt.show()
Modified: branches/v0_98_5_maint/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- branches/v0_98_5_maint/lib/matplotlib/backends/backend_pdf.py
2008-12-17 11:20:35 UTC (rev 6643)
+++ branches/v0_98_5_maint/lib/matplotlib/backends/backend_pdf.py
2008-12-17 12:51:22 UTC (rev 6644)
@@ -1184,13 +1184,14 @@
truetype_font_cache = maxdict(50)
afm_font_cache = maxdict(50)
- def __init__(self, file, dpi):
+ def __init__(self, file, dpi, image_dpi):
RendererBase.__init__(self)
self.file = file
self.gc = self.new_gc()
self.file.used_characters = self.used_characters = {}
self.mathtext_parser = MathTextParser("Pdf")
self.dpi = dpi
+ self.image_dpi = image_dpi
self.tex_font_map = None
def finalize(self):
@@ -1230,9 +1231,10 @@
stat_key, (realpath, set()))
used_characters[1].update(charset)
+ def get_image_magnification(self):
+ return self.image_dpi/72.0
+
def draw_image(self, x, y, im, bbox, clippath=None, clippath_trans=None):
- #print >>sys.stderr, "draw_image called"
-
# MGDTODO: Support clippath here
gc = self.new_gc()
if bbox is not None:
@@ -1240,6 +1242,7 @@
self.check_gc(gc)
h, w = im.get_size_out()
+ h, w = 72.0*h/self.image_dpi, 72.0*w/self.image_dpi
imob = self.file.imageObject(im)
self.file.output(Op.gsave, w, 0, 0, h, x, y, Op.concat_matrix,
imob, Op.use_xobject, Op.grestore)
@@ -1873,13 +1876,13 @@
return 'pdf'
def print_pdf(self, filename, **kwargs):
- dpi = 72 # there are 72 Postscript points to an inch
- # TODO: use the dpi kwarg for images
- self.figure.set_dpi(dpi)
+ ppi = 72 # Postscript points in an inch
+ image_dpi = kwargs.get('dpi', 72) # dpi to use for images
+ self.figure.set_dpi(ppi)
width, height = self.figure.get_size_inches()
- file = PdfFile(width, height, dpi, filename)
+ file = PdfFile(width, height, ppi, filename)
renderer = MixedModeRenderer(
- width, height, dpi, RendererPdf(file, dpi))
+ width, height, ppi, RendererPdf(file, ppi, image_dpi))
self.figure.draw(renderer)
renderer.finalize()
file.close()
Modified: branches/v0_98_5_maint/lib/matplotlib/figure.py
===================================================================
--- branches/v0_98_5_maint/lib/matplotlib/figure.py 2008-12-17 11:20:35 UTC
(rev 6643)
+++ branches/v0_98_5_maint/lib/matplotlib/figure.py 2008-12-17 12:51:22 UTC
(rev 6644)
@@ -755,7 +755,7 @@
# make a composite image blending alpha
# list of (_image.Image, ox, oy)
mag = renderer.get_image_magnification()
- ims = [(im.make_image(mag), im.ox*mag, im.oy*mag)
+ ims = [(im.make_image(mag), im.ox, im.oy)
for im in self.images]
im = _image.from_images(self.bbox.height * mag,
Modified: branches/v0_98_5_maint/lib/matplotlib/image.py
===================================================================
--- branches/v0_98_5_maint/lib/matplotlib/image.py 2008-12-17 11:20:35 UTC
(rev 6643)
+++ branches/v0_98_5_maint/lib/matplotlib/image.py 2008-12-17 12:51:22 UTC
(rev 6644)
@@ -630,6 +630,7 @@
self.ox = offsetx
self.oy = offsety
self.update(kwargs)
+ self.magnification = 1.0
def contains(self, mouseevent):
"""Test whether the mouse event occured within the image.
@@ -659,22 +660,30 @@
-0.5+self.oy, numrows-0.5+self.oy)
def make_image(self, magnification=1.0):
- # had to introduce argument magnification to satisfy the unit test
- # figimage_demo.py. I have no idea, how magnification should be used
- # within the function. It should be !=1.0 only for non-default DPI<
- # settings in the PS backend, as introduced by patch #1562394
- # Probably Nicholas Young should look over this code and see, how
- # magnification should be handled correctly.
if self._A is None:
raise RuntimeError('You must first set the image array')
x = self.to_rgba(self._A, self._alpha)
-
- im = _image.fromarray(x, 1)
+ self.magnification = magnification
+ # if magnification is not one, we need to resize
+ ismag = magnification!=1
+ #if ismag: raise RuntimeError
+ if ismag:
+ isoutput = 0
+ else:
+ isoutput = 1
+ im = _image.fromarray(x, isoutput)
fc = self.figure.get_facecolor()
im.set_bg( *mcolors.colorConverter.to_rgba(fc, 0) )
im.is_grayscale = (self.cmap.name == "gray" and
len(self._A.shape) == 2)
+
+ if ismag:
+ numrows, numcols = self.get_size()
+ numrows *= magnification
+ numcols *= magnification
+ im.set_interpolation(_image.NEAREST)
+ im.resize(numcols, numrows)
if self.origin=='upper':
im.flipud_out()
@@ -683,9 +692,8 @@
def draw(self, renderer, *args, **kwargs):
if not self.get_visible(): return
# todo: we should be able to do some cacheing here
- im = self.make_image()
-
- renderer.draw_image(round(self.ox), round(self.oy), im,
self.figure.bbox,
+ im = self.make_image(renderer.get_image_magnification())
+ renderer.draw_image(round(self.ox/self.magnification),
round(self.oy/self.magnification), im, self.figure.bbox,
*self.get_transformed_clip_path_and_affine())
def write_png(self, fname):
@@ -772,7 +780,7 @@
x.shape = im.size[1], im.size[0], 4
return x
-def thumbnail(infile, thumbfile, scale=0.1, interpolation='bilinear',
+def thumbnail(infile, thumbfile, scale=0.1, interpolation='bilinear',
preview=False):
"""
make a thumbnail of image in *infile* with output filename
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