[FEATURE] updates nearby-series to support logarithmic scaled data #11
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This change adds a scaling to the log-base data to convert it to a linear space for nearby series finding. If this is not present and you use a log-based chart, you end up having millions of data points within just a few pixels. --------- Signed-off-by: Simon Olander <simon.olander@sap.com>
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@olandr can you check the lint errors? |
Resolved linting by removing redundant mathjs dep (replaced with ** operator)
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Obviously using GH mobile does not auto add the DCO. So have to redo that commit after the holidays with proper DCO and lint fix. |
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Description
This is a precondition for supporting perses/perses#3434. If a user has selected a log-base for their render, this will perform a base-change to convert the log-base vector space to a linear space for the logic handling nearby series finding.
Example
For instance If this is not present and you use a log-based chart, you end up with a "nearby-search interval" of just a few pixels. That is, if you have multiple series in the realm of ~1e4, using a log scale we would have y-values of ~4. The search interval would then be <4. But as the chart coordinates still are very large ~1e4 it would be impossible to get precise enough to hover/select a particular series.
Screenshots
Checklist
[<catalog_entry>] <commit message>naming convention using one of thefollowing
catalog_entryvalues:FEATURE,ENHANCEMENT,BUGFIX,BREAKINGCHANGE,DOC,IGNORE.UI Changes
There are no UI changes.