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Re: Vector representation of data. [message #83852 is a reply to message #83809]

Thu, 04 April 2013 00:27

d.poreh
Messages: 406
Registered: October 2007

Senior Member

On Friday, March 29, 2013 3:38:01 PM UTC-8, Phillip Bitzer wrote:
> Building off Chris's advice...
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> Assuming (y0,x0) is the "low point", then something like
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> ang = ATAN(y-y0, x-x0)
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> partvelvec, z*COS(ang), z*SIN(ang), x, y
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> should do the trick. This uses partvelvec from the astro library, http://idlastro.gsfc.nasa.gov/ftp/pro/plot/partvelvec.pro
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> You'll have to be careful with which way the vector points, if that's important.

Thanks guys, I am using partvelvec now and looks like it is working:)
Cheers,
Dave

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[Message index]

		Re: Vector representation of data. By: chris_torrence@NOSPAM on Fri, 29 March 2013 14:18
		Re: Vector representation of data. By: Phillip Bitzer on Fri, 29 March 2013 16:38
		Re: Vector representation of data. By: d.poreh on Thu, 04 April 2013 00:27

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