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Re: display position arrays on an image [message #88812 is a reply to message #88811]

Mon, 23 June 2014 08:54

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

On Monday, June 23, 2014 5:43:38 AM UTC-5, g.na...@gmail.com wrote:
> I used the VECCOLORS keyword to make the vectors but it always be black or white. I used information from here to create the color: http://www.idlcoyote.com/color_tips/getcolor.php
>
>
> Yellow = [255,255,0]
>
> cgDrawVectors, x, y, pos_x, pos_y,fraction=0.001, VECCOLORS= yellow, /ORDERED, /OVERPLOT
>
>
>
> The vectors are still white.

I think you need to read a little more carefully:

VECCOLORS in optional
A scalar or vector of colors the same size as velx. May be bytes, short integers, or strings. Bytes and short integers are treated as indices into the current color table. The default is "opposite".

You're providing short integers, so it's reading indices.

Either put the colors you want in the current color table, or simply provide the string(s) of the color:
cgDrawVectors, x, y, pos_x, pos_y,fraction=0.001, VECCOLORS= 'yellow', /ORDERED, /OVERPLOT

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[Message index]

		display position arrays on an image By: g.nacarts on Thu, 19 June 2014 13:52
		Re: display position arrays on an image By: g.nacarts on Thu, 19 June 2014 13:53
		Re: display position arrays on an image By: David Fanning on Thu, 19 June 2014 15:24
		Re: display position arrays on an image By: g.nacarts on Fri, 20 June 2014 04:54
		Re: display position arrays on an image By: David Fanning on Fri, 20 June 2014 09:32
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:11
		Re: display position arrays on an image By: David Fanning on Sat, 21 June 2014 12:31
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:43
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:49
		Re: display position arrays on an image By: David Fanning on Sat, 21 June 2014 20:25
		Re: display position arrays on an image By: g.nacarts on Mon, 23 June 2014 03:43
		Re: display position arrays on an image By: Phillip Bitzer on Mon, 23 June 2014 08:54

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