Eric: I came across what may be a small bug in colorbar. If you pass a list to colorbar with the 'ticks' keyword, and the list is longer than 10, you don't actually get the ticks at the locations you specify. This patch seems to fix it:
--- colorbar.py 2007-04-09 11:12:19.000000000 -0600
+++ colorbar.py 2007-05-25 12:20:20.000000000 -0600
@@ -145,7 +145,7 @@
self.solids = None
self.lines = None
- self.locator = ticker.FixedLocator(ticks, nbins=10)
+ self.locator = ticker.FixedLocator(ticks, nbins=len(ticks))
self.locator = ticks # Handle default in _ticker()
if format is None:
Notice that the Locator was being created with 10 bins, regardless of how many ticks were being asked for.
If this looks OK I can commit.
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