When drawing bar charts (option bar or hbar) the bars are drawn from 0 rather than from the minimum Y value. Bins with positive values to be drawn as bars  extending from the X axis upwards, and bins with negative values to be drawn as bars extending from the X axis downwards.
When drawing bar charts (option bar or hbar) the bars are drawn from 0 rather
than from the minimum Y value. Bins with positive values to be drawn as bars
 extending from the X axis upwards, and bins with negative values to be drawn
as bars extending from the X axis downwards.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@4459 27541ba8-7e3a-0410-8455-c3a389f83636

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