Missing minors when LinearAxisTransform.scale=-1 [SOLVED]
lazarus / 55-TAChart

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AnthonyTekatch · 2022-01-10 14:38

The minors grid is not visible when a LinearAxisTransform.scale=-1

Disabling that transform allows the minors to show up.

Would there be a way to have a negative scale transform and a minor
grid at the same time?

A simple demo project is attached.

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wp · 2022-01-10 14:50

I guess this is a bug. Could you submit a but report so that it is not
forgotten?

Giving the LinearAxisTransfor a negative Scale factor has the effect
to invert the axis direction. Why don't you use the Inverted property
of the axis? It should have the same effect, but - as I checked - the
axis minors are not affected.

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AnthonyTekatch · 2022-01-10 17:31

I have submitted a bug report.

Thank you, I will check if inverted property can be used with my
larger project.

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AnthonyTekatch · 2022-01-10 17:34

Quote from: wp on January 10, 2022, 03:50:21 pmGiving the
LinearAxisTransfor a negative Scale factor has the effect to invert
the axis direction. Why don't you use the Inverted property of the
axis? It should have the same effect, but - as I checked - the axis
minors are not affected.

I just checked that. Since I also have a right axis, inverting the
left axis seems to also invert the right axis, and I think on the
separate transform could be used to invert only the left axis.

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AnthonyTekatch · 2022-01-11 13:45

wp, Thank you for fixing this issue:
https://gitlab.com/freepascal.org/lazarus/lazarus/-/issues/39546