Revision: 7098
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7098&view=rev
Author: leejjoon
Date: 2009-05-12 04:12:07 +0000 (Tue, 12 May 2009)
Log Message:
-----------
aspect for log-log plot
Modified Paths:
--------------
trunk/matplotlib/CHANGELOG
trunk/matplotlib/lib/matplotlib/axes.py
Added Paths:
-----------
trunk/matplotlib/examples/pylab_examples/aspect_loglog.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG 2009-05-08 19:04:34 UTC (rev 7097)
+++ trunk/matplotlib/CHANGELOG 2009-05-12 04:12:07 UTC (rev 7098)
@@ -1,4 +1,6 @@
======================================================================
+2009-05-11 aspect=1 in log-log plot gives square decades.
+
2009-05-08 clabel takes new kwarg, rightside_up; if False, labels
will not be flipped to keep them rightside-up. This
allows the use of clabel to make streamfunction arrows,
Added: trunk/matplotlib/examples/pylab_examples/aspect_loglog.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/aspect_loglog.py
(rev 0)
+++ trunk/matplotlib/examples/pylab_examples/aspect_loglog.py 2009-05-12
04:12:07 UTC (rev 7098)
@@ -0,0 +1,22 @@
+import matplotlib.pyplot as plt
+
+ax1 = plt.subplot(121)
+ax1.set_xscale("log")
+ax1.set_yscale("log")
+ax1.set_xlim(1e1, 1e3)
+ax1.set_ylim(1e2, 1e3)
+ax1.set_aspect(1)
+ax1.set_title("adjustable = box")
+
+ax2 = plt.subplot(122)
+ax2.set_xscale("log")
+ax2.set_yscale("log")
+ax2.set_adjustable("datalim")
+ax2.plot([1,3, 10], [1, 9, 100], "o-")
+ax2.set_xlim(1e-1, 1e2)
+ax2.set_ylim(1e-1, 1e3)
+ax2.set_aspect(1)
+ax2.set_title("adjustable = datalim")
+
+plt.draw()
+plt.show()
Modified: trunk/matplotlib/lib/matplotlib/axes.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/axes.py 2009-05-08 19:04:34 UTC (rev
7097)
+++ trunk/matplotlib/lib/matplotlib/axes.py 2009-05-12 04:12:07 UTC (rev
7098)
@@ -1085,7 +1085,7 @@
raise ValueError('argument must be among %s' %
', '.join(mtransforms.BBox.coefs.keys()))
- def get_data_ratio(self):
+ def get_data_ratio(self, mode="linear"):
"""
Returns the aspect ratio of the raw data.
@@ -1093,11 +1093,18 @@
types.
"""
xmin,xmax = self.get_xbound()
- xsize = max(math.fabs(xmax-xmin), 1e-30)
ymin,ymax = self.get_ybound()
- ysize = max(math.fabs(ymax-ymin), 1e-30)
+
+ if mode == "log":
+ xsize = max(math.fabs(math.log10(xmax)-math.log10(xmin)), 1e-30)
+ ysize = max(math.fabs(math.log10(ymax)-math.log10(ymin)), 1e-30)
+ else:
+ xsize = max(math.fabs(xmax-xmin), 1e-30)
+ ysize = max(math.fabs(ymax-ymin), 1e-30)
+
return ysize/xsize
+
def apply_aspect(self, position=None):
'''
Use :meth:`_aspect` and :meth:`_adjustable` to modify the
@@ -1106,7 +1113,20 @@
if position is None:
position = self.get_position(original=True)
+
aspect = self.get_aspect()
+
+ xscale, yscale = self.get_xscale(), self.get_yscale()
+ if xscale == "linear" and yscale == "linear":
+ aspect_scale_mode = "linear"
+ elif xscale == "log" and yscale == "log":
+ aspect_scale_mode = "log"
+ else:
+ warnings.warn(
+ 'aspect is not supported for Axes with xscale=%s, yscale=%s' \
+ % (xscale, yscale))
+ aspect = "auto"
+
if aspect == 'auto':
self.set_position( position , which='active')
return
@@ -1127,7 +1147,7 @@
figW,figH = self.get_figure().get_size_inches()
fig_aspect = figH/figW
if self._adjustable == 'box':
- box_aspect = A * self.get_data_ratio()
+ box_aspect = A * self.get_data_ratio(mode=aspect_scale_mode)
pb = position.frozen()
pb1 = pb.shrunk_to_aspect(box_aspect, pb, fig_aspect)
self.set_position(pb1.anchored(self.get_anchor(), pb), 'active')
@@ -1137,11 +1157,18 @@
# by prior use of 'box'
self.set_position(position, which='active')
+
xmin,xmax = self.get_xbound()
+ ymin,ymax = self.get_ybound()
+
+ if aspect_scale_mode == "log":
+ xmin, xmax = math.log10(xmin), math.log10(xmax)
+ ymin, ymax = math.log10(ymin), math.log10(ymax)
+
xsize = max(math.fabs(xmax-xmin), 1e-30)
- ymin,ymax = self.get_ybound()
ysize = max(math.fabs(ymax-ymin), 1e-30)
+
l,b,w,h = position.bounds
box_aspect = fig_aspect * (h/w)
data_ratio = box_aspect / A
@@ -1152,9 +1179,18 @@
if abs(y_expander) < 0.005:
#print 'good enough already'
return
- dL = self.dataLim
- xr = 1.05 * dL.width
- yr = 1.05 * dL.height
+
+ if aspect_scale_mode == "log":
+ dL = self.dataLim
+ dL_width = math.log10(dL.x1) - math.log10(dL.x0)
+ dL_height = math.log10(dL.y1) - math.log10(dL.y0)
+ xr = 1.05 * dL_width
+ yr = 1.05 * dL_height
+ else:
+ dL = self.dataLim
+ xr = 1.05 * dL.width
+ yr = 1.05 * dL.height
+
xmarg = xsize - xr
ymarg = ysize - yr
Ysize = data_ratio * xsize
@@ -1189,14 +1225,20 @@
yc = 0.5*(ymin+ymax)
y0 = yc - Ysize/2.0
y1 = yc + Ysize/2.0
- self.set_ybound((y0, y1))
+ if aspect_scale_mode == "log":
+ self.set_ybound((10.**y0, 10.**y1))
+ else:
+ self.set_ybound((y0, y1))
#print 'New y0, y1:', y0, y1
#print 'New ysize, ysize/xsize', y1-y0, (y1-y0)/xsize
else:
xc = 0.5*(xmin+xmax)
x0 = xc - Xsize/2.0
x1 = xc + Xsize/2.0
- self.set_xbound((x0, x1))
+ if aspect_scale_mode == "log":
+ self.set_xbound((10.**x0, 10.**x1))
+ else:
+ self.set_xbound((x0, x1))
#print 'New x0, x1:', x0, x1
#print 'New xsize, ysize/xsize', x1-x0, ysize/(x1-x0)
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