Revision: 7511
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7511&view=rev
Author: jdh2358
Date: 2009-08-20 23:11:44 +0000 (Thu, 20 Aug 2009)
Log Message:
-----------
make autodateformatter customizable
Modified Paths:
--------------
trunk/matplotlib/CHANGELOG
trunk/matplotlib/examples/pylab_examples/demo_ribbon_box.py
trunk/matplotlib/lib/matplotlib/dates.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG 2009-08-20 16:19:22 UTC (rev 7510)
+++ trunk/matplotlib/CHANGELOG 2009-08-20 23:11:44 UTC (rev 7511)
@@ -1,3 +1,6 @@
+2009-08-20 Added scaled dict to AutoDateFormatter for customized
+ scales - JDH
+
2009-08-15 Pyplot interface: the current image is now tracked at the
figure and axes level, addressing tracker item 1656374. - EF
Modified: trunk/matplotlib/examples/pylab_examples/demo_ribbon_box.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/demo_ribbon_box.py 2009-08-20
16:19:22 UTC (rev 7510)
+++ trunk/matplotlib/examples/pylab_examples/demo_ribbon_box.py 2009-08-20
23:11:44 UTC (rev 7511)
@@ -136,5 +136,6 @@
ax.set_xlim(years[0]-0.5, years[-1]+0.5)
ax.set_ylim(0, 10000)
+ fig.savefig('ribbon_box.png')
plt.show()
Modified: trunk/matplotlib/lib/matplotlib/dates.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/dates.py 2009-08-20 16:19:22 UTC (rev
7510)
+++ trunk/matplotlib/lib/matplotlib/dates.py 2009-08-20 23:11:44 UTC (rev
7511)
@@ -378,6 +378,28 @@
"""
This class attempts to figure out the best format to use. This is
most useful when used with the :class:`AutoDateLocator`.
+
+
+ The AutoDateFormatter has a scale dictionary that maps the scale
+ of the tick (the distance in days between one major tick) and a
+ format string. The default looks like this::
+
+ self.scaled = {
+ 365.0 : '%Y',
+ 30. : '%b %Y',
+ 1.0 : '%b %d %Y',
+ 1./24. : '%H:%M:%D',
+ }
+
+
+ The algorithm picks the key in the dictionary that is >= the
+ current scale and uses that format string. You can customize this
+ dictionary by doing::
+
+
+ formatter = AutoDateFormatter()
+ formatter.scaled[1/(24.*60.)] = '%M:%S' # only show min and sec
+
"""
# This can be improved by providing some user-level direction on
@@ -392,28 +414,29 @@
# possibility...
def __init__(self, locator, tz=None):
+ """
+ """
self._locator = locator
- self._formatter = DateFormatter("%b %d %Y %H:%M:%S %Z", tz)
self._tz = tz
+ self._formatter = DateFormatter("%b %d %Y %H:%M:%D", tz)
+ self.scaled = {
+ 365.0 : '%Y',
+ 30. : '%b %Y',
+ 1.0 : '%b %d %Y',
+ 1./24. : '%H:%M:%S',
+ }
def __call__(self, x, pos=0):
scale = float( self._locator._get_unit() )
- if ( scale == 365.0 ):
- self._formatter = DateFormatter("%Y", self._tz)
- elif ( scale == 30.0 ):
- self._formatter = DateFormatter("%b %Y", self._tz)
- elif ( (scale == 1.0) or (scale == 7.0) ):
- self._formatter = DateFormatter("%b %d %Y", self._tz)
- elif ( scale == (1.0/24.0) ):
- self._formatter = DateFormatter("%H:%M:%S %Z", self._tz)
- elif ( scale == (1.0/(24*60)) ):
- self._formatter = DateFormatter("%H:%M:%S %Z", self._tz)
- elif ( scale == (1.0/(24*3600)) ):
- self._formatter = DateFormatter("%H:%M:%S %Z", self._tz)
- else:
- self._formatter = DateFormatter("%b %d %Y %H:%M:%S %Z", self._tz)
+ keys = self.scaled.keys()
+ keys.sort()
+ for k in keys:
+ if k>=scale:
+ self._formatter = DateFormatter(self.scaled[k])
+ break
+
return self._formatter(x, pos)
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