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Re: IDlgrSymbol recompute_dimensions ?? [message #59668 is a reply to message #59571]

Thu, 03 April 2008 11:42

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

bernat writes:

> I do that,
>
> plot=OBJ_NEW('IDlgrPlot', SYMBOL=oSymbol)
>
> plot->SetProperty, DATAX=datax, DATAY=datay
> plot->GetProperty, XRANGE=xrange, YRANGe=yrange
>
> xs=NORMALIZE(xrange, POSITION=[location[0],
> location[0]+dimensions[0]])
> ys=NORMALIZE(yrange, POSITION=[location[1],
> location[1]+dimensions[1]])
>
> plot->SetProperty, XCOOR_CONV=xs, YCOORD_CONV=ys
>
> Where datax and datay are my values, oSymbol is my IDLgrSymbol and
> location and dimensions is the position and dimensions of the plot in
> the View.

Oh, right. I don't have time to work on this, but
I see in XPLOT (on my web page), I have had to size
the symbol according to the axes ranges. I've done
something like this:

; Size the symbols appropriately for the plot.
xSymSize = (xrange[1] - xrange[0]) * 0.015 * symSize
ySymSize = (yrange[1] - yrange[0]) * 0.015 * symSize
IF Obj_Valid(thisSymbol) THEN $
thisSymbol->SetProperty, Size=[xSymSize, ySymSize]

If I don't do that, the symbols are completely misshaped.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		IDlgrSymbol recompute_dimensions ?? By: natha on Thu, 03 April 2008 10:46
		Re: IDlgrSymbol recompute_dimensions ?? By: natha on Thu, 03 April 2008 12:31
		Re: IDlgrSymbol recompute_dimensions ?? By: David Fanning on Thu, 03 April 2008 11:42
		Re: IDlgrSymbol recompute_dimensions ?? By: natha on Thu, 03 April 2008 11:24
		Re: IDlgrSymbol recompute_dimensions ?? By: David Fanning on Thu, 03 April 2008 10:58

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