Support negative values for log Scale. #20872
Open
+278
−57
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Support implemented by inverting the extents at input and handling the input as absolute value and finally mapping everything back to negative axes in inverted order.
Added test cases for passing through 0 power and new a new file logScale-negative.html.
Brief Information
This pull request is in the type of:
What does this PR do?
Add support for plotting negative values on Log scales.
Fixed issues
Fix a previous PR #16547 more generically and correctly.
Details
Before: What was the problem?
Negative values could not be plotted with log scaling.
After: How does it behave after the fixing?
Log scale can now be used
Before: nothing is drawn

After

Document Info
One of the following should be checked.
There is no mention of negative values having problems in docs.
Misc
ZRender Changes
Related test cases or examples to use the new APIs
N.A.
Others
Merging options
Other information