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Re: Vector representation of data. [message #83809 is a reply to message #83672]

Fri, 29 March 2013 16:38

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

Building off Chris's advice...

Assuming (y0,x0) is the "low point", then something like

ang = ATAN(y-y0, x-x0)
partvelvec, z*COS(ang), z*SIN(ang), x, y

should do the trick. This uses partvelvec from the astro library, http://idlastro.gsfc.nasa.gov/ftp/pro/plot/partvelvec.pro

You'll have to be careful with which way the vector points, if that's important.

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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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