Subchapters:
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PlotsImages
IDL>
add_path,/astro I prefer using the esrg package to look at images: IDL>
add_path,/esrg Well, it's nice, but we don't see anything excepting the central star! Let's cut at 500: IDL> tvim,image,/sc,range=[-60,500] Nice, here is the nebula... You can change the table of colors with: IDL> xloadct And obtain such images (if you have a 24bit monitor, you will have to redo all the commands leading to your plot to see the effect of changing the color table):
Now suppose you want to draw a cut over the image. Lets consider the vector with y=270: IDL>
oplot,image[*,270]*0+270 ; Horizontal line |
IDL courses C. Morisset © 2004 IA/UNAM V 2.2 |