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Re: symsize in data units [message #66297 is a reply to message #66292]

Mon, 04 May 2009 14:31

pyoachim
Messages: 2
Registered: January 2009

Junior Member

> I think it's impossible to do with PSYM or SYMSIZE.
>
> On the other hand, it's simple enough to write a small procedure that
> OPLOT's what you want, in the units you want. For example, a circle
> could be done like this,
>
> pro plot_circle, xcent, ycent, symsize=radius, _EXTRA=extra
> th = 2*!dpi/100*dindgen(101)
> if n_elements(radius) EQ 0 then r = 1 else r = radius(0)
> x = r*cos(th) & y = r*sin(th)
> for i = 0, n_elements(xcent)-1 do $
> oplot, xcent(i)+x, ycent(i)+y, _EXTRA=extra
> end
>
> Then you can call PLOT_CIRCLE, x, y, symsize=4.5

Thanks Craig, that works great. I replaced your oplot with a polyfill
so I could get solid points. I was also surprised that I can get this
to make smaller postscript files than using the plotsym procedure. I
thought for sure your routine would make giant output.

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[Message index]

		Re: symsize in data units By: Craig Markwardt on Mon, 04 May 2009 19:29
		Re: symsize in data units By: pyoachim on Mon, 04 May 2009 14:31
		Re: symsize in data units By: Craig Markwardt on Sun, 03 May 2009 18:21

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