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Re: Crosshair data point extraction - Query [message #1521 is a reply to message #1514]

Wed, 01 December 1993 12:53

offenbrg
Messages: 31
Registered: August 1993

Member

gnaa38@aero.gla.ac.uk (Paul Porcelli) writes:

> Is there any facility in IDL or Wave to produce a plot and then identifty the
> coordinates of a point by clicking the mouse or moving a crosshair over the
> point.
> Thanks in advance.

There is a procedure called CURSOR (It appears in IDL, and should appear in
Wave as well but I'm not sure). You can use it with /DATA, /DEVICE and
/NORMAL coordinates.

Example:
plot,indgen(40),psym=1 ;plots '+' as the symbol.
cursor,x,y,3,/DATA ;Move the cursor onto a '+' and click with
;any mouse button.
print,x,y ;Ta-daah.

Have fun.
Joel
--
Joel D Offenberg | "Aren't you in the position of a life-long
Hughes STX/ UIT Science Team | vegetarian giving us your recipe for steak
offenbrg@fondue.gsfc.nasa.gov | and kidney pie?" - Rumpole of the Bailey
I get paid to stare into space. |

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		Re: Crosshair data point extraction - Query By: oet on Thu, 02 December 1993 07:58
		Re: Crosshair data point extraction - Query By: offenbrg on Wed, 01 December 1993 12:53

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