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Re: error with ARROW [message #58505 is a reply to message #58379]

Wed, 30 January 2008 07:13

pgrigis
Messages: 436
Registered: September 2007

Senior Member

nakisa wrote:
> hi
> I can't understand your meaning of coordiant system! the file is
> produced with fortran in 4 columns . IDL read them this : x =
> Reform(data[0,*])
>
> then I wrote ARROW,x,y,x2,y2 , and it doesn't work !!

Let's make an example with this mock data

x=[0.,0.5,1.]
y=[0.,0.2,0.4]
x2=[0.3,0.7,1.1]
y2=[0.3,0.2,0.8]

plot,[0,0],/nodata,xrange=[-1,2],yrange=[-1,2]
arrow,x,y,x2,y2,/data

Does this work for you? Note the /data keyword to arrow!

Ciao,
Paolo

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[Message index]

		error with ARROW By: nakisa on Tue, 29 January 2008 07:57
		Re: error with ARROW By: nakisa on Wed, 30 January 2008 11:35
		Re: error with ARROW By: pgrigis on Wed, 30 January 2008 07:13

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