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Re: Plotting a horizontal line over a cgImage [message #93583 is a reply to message #93582] Mon, 29 August 2016 11:20 Go to previous messageGo to previous message
wlandsman is currently offline  wlandsman
Messages: 743
Registered: June 2000
Senior Member
On Monday, August 29, 2016 at 12:03:11 PM UTC-4, Christina Haig wrote:

> As you can see, the yrange goes roughly from 1 to 100ish.

Actually we can't see ;-) We (the readers of this newsgroup) don't know the content of your variables, and we can't see the output plot.

But your code looks like it should work. Does the CGPLOT command come immediately after the CGIMAGE command or is there something in between that could reset the positioning?

Also I would set COLOR='green' (or something similar) in your CGPLOT command, in case there is something funky with the color table.

Also check the coordinate transformation between data and device coordinates

IDL> print,convert_coord(mint,maxt],[2.0,2.0],/data,/to_device)

to make sure the line is in the physical area of the window. --Wayne

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