Hi,
I have some problems in copying/saving charts when the clipped property of a serie (Marks.Clipped) is set to False.
I am sending 3 mails in order to show you the tchart behaviour. In the first mail I attached the chart copied without marks, in the second is the same chart with marks.visible= false and marks.clipped = false and in the third is the same chart with marks.visible= true and marks.clipped=true
looking at the third chart, the chart is copied like if the clipped property was set to false (the marks are drawn outside the chart borders, it should more visible with longer marks). any hint?
andrea

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the second image

Il 12/01/2010 12.53, Andrea Mauri ha scritto:

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the third image

Il 12/01/2010 12.55, Andrea Mauri ha scritto:

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2010/1/12 Andrea Mauri :

Hi,

Please, if possible, avoid posting in HTML, especially Word-generated. I had some trouble reading your post.

I have some problems in copying/saving charts when the clipped property of a serie (Marks.Clipped) is set to False.

Indeed, there is some problem, but I do not quite understand it yet. TChart executes the same code for on-screen and on-bitmap drawing. This code gets passed a canvas to draw on. It seems that the canvas obtained from TRasterImage does not implement ClipRect and/or Clipping properties correctly, although I am still not sure why. Will investigate further tomorrow.

P.S. Is your problem with adding out-of-order points resolved? If you have time, please reply to my answer in that thread.

It seems that the problem is somewhere deep in the LCL, so I was unable to resolve it quickly.
I will have to ask other Lazarus developers for help. Please create a bug report and assign it to me, so the issue will not be forgotten.
As a temporary workaround, you can copy an image from TChart.Canvas to the bitmap,
assuming they are of the same size.

Alexander Klenin wrote

It seems that the problem is somewhere deep in the LCL, so I was unable to resolve it quickly.

Found it -- it was a TChart bug after all. Fixed in r23433

Found it -- it was a TChart bug after all. Fixed in r23433

Thanks, it works!