tooltip on y-axis looks wrong

[alshan]

.. I'll add the code example later.

[alshan]

In this notebook: COVID-19 in India: EDA and Spatial Visualization

[OLarionova-HORIS]

Could you please clarify what is the expected result? Should match the axis label?

[alshan]

I meant "y-axis", sorry. I was using:

scale_y_continuous(format="{} %")

and expected the value being formatted using default formatter. The only difference would be the added suffix: ' %'

[alshan]

When I try to fix tooltip formatting via layer_tooltips().format('@Y', '{.1f}%') , it has no effect.

If I format y-axis: scale_y_continuous(format="{.0f} %") , then the y-axis tooltip shows only integer part (expected to see tenths).

[OLarionova-HORIS]

Now the tooltip format() does not apply to the axis tooltip. But should it be applied? Then the field='^y' will apply for y-axis tooltip and '^Y' - for all positional including y-axis.
And tenths will be displayed in the case of layer_tooltips().format('^y', '{.1f}%').

[alshan]

I think yes, "^y" and "@y" should include "y" aesthetic no matter in which tooltip.

The 2nd part in this issue is that using scale_y_continuous(format="{} %") shouldn't change y-axis tooltip formatting.

[alshan]

using scale_y_continuous(format="{} %") shouldn't change y-axis tooltip formatting.

Expected the same behavior as in this notebook: https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/examples/cookbook/formatting_axes_etc.ipynb

See Out[6]

[OLarionova-HORIS]

The first path of the issue - applying format() to the axis tooltip: #473

[OLarionova-HORIS]

Add changes #483 - the scale format is applied to tick labels only.

The rules now are as follows:
- the scale's format parameter is applied to tick labels only and does not affect tooltips;
- the tooltip format() is also applied to the axis tooltip;
- if the tooltip format() is not specified, the tooltip will get the value after applying the default formatting from the scale (without using the specified format for the scale).

So the following settings
layer_tooltips().format("^Y", "{.1f} %") -- tooltip
+
scale_y_continuous(format="{} %") -- ticks
will give the result: