Synchronizing multiple charts
lazarus / 55-TAChart

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Davidous · 2019-06-25 08:53

Hello,

In delphi I could do the synch of charts and then for example if I
zoomed on one chart, the other automaticly zoomed with it. Is there a
way to do this in lazarus?

Thank you in advance!

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Davidous · 2019-06-25 08:55

Sorry, I've just found the answer in another topic

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trev · 2019-06-25 09:37

It might help if you put the link here and marked the thread [SOLVED]
in the original post subject

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Davidous · 2019-06-25 10:25

I have one more question.
I've never used TAChartExtentlink before. How can I use it? For
example if I want to link Chart A and Chart B?
What's the code?

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wp · 2019-06-27 10:15

I suppose you have two charts on a form and want to make sure that a
change in the extent of one chart by zooming or panning is
synchronized in the other chart.
Add a TChartExentLink component.Click on the '...' next to the
"LinkedCharts" property of the ChartExtentLink.Click "+ Add". In the
object inspector, assign the first chart to the "Chart" property of
the "LinkedChart" instance.Click "+Add" again. Assign the second chart
to the "Chart" property of the second "LinkedChart"
instance....(Repeat if you want to link further charts.)

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Davidous · 2019-06-27 11:26

Thank you!

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Davidous · 2020-02-10 11:31

After a long time hello again,

I was wondering about maximum how many charts can I synchronize?
I have now 12 charts, but I can synch only 10 with Chartextentlink. Is
there a limit?

Thanks in advance!

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wp · 2020-02-10 12:18

There should be no limit. The linked charts are stored in a
TCollection which has no hard-coded limit. And the attached demo shows
that 16 charts can be linked without problems. Click on the button to
toggle the axes of the top-left chart between two combinations and see
that the others follow immediately.

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Davidous · 2020-02-10 14:00

Thank you!