Synchronizing multiple charts

[Davidous]

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!

[Davidous]

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

[trev]

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

[Davidous]

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?

[wp]

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.)

[Davidous]

Thank you!

[Davidous]

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!

[wp]

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.

[Davidous]

Thank you!