Fix lost ticks#1686

Merged

efiring merged 12 commits intomatplotlib:masterfrom

dhyams:fix_lost_ticks

Feb 19, 2013

Commits on Jan 20, 2013

Added a strategy to stop losing ticks on the ends of an axis. The approach that is
Daniel Hyams
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Modifications to MultipleLocator and LogLocator, so that the locators will
Daniel Hyams
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oops, missed a return statement in my copy/pasting.
Daniel Hyams
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Commits on Jan 26, 2013

Fixed two of the failing tests for this "Fix lost ticks" branch, and fixed a problem
Daniel Hyams
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Commits on Jan 28, 2013

Fix the nose failure for polar plots; don't try to pad the interval for
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Since the _get_pixel_distance_along_axis routine is supposed to return a distance
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Commits on Feb 11, 2013

Commits on Feb 18, 2013

More PEP8 fixes and comments
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Pixel perturbation is now 0.5, for a more accurate calculation of exactly how
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Added a comment about the try/except block that catches malfunctions in
Daniel Hyams
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