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keyword inheritance in object graphics [message #91820]

Wed, 02 September 2015 07:58

dg86
Messages: 118
Registered: September 2012

Senior Member

Dear Folks,

I'm trying to write a wrapper routine that creates an object plot,
overlays some arrows on the plot, and then returns the plot object.
I'd like to use keyword inheritance to provide options for both
plot() and arrow() within my routine. The idea is something like

function arrowplot, x, y, _extra=extra
pl = plot(x, y, _extra = extra)
ndx = [0, 1]
ar = arrow(x[ndx], y[ndx], _extra=extra)
return, pl
end

I assumed that the plot(...) and arrow(...) functions would
each use the keywords they understand and ignore the rest.
Instead, the arrow(...) function throws an error whenever it
encounters an unfamiliar keyword in the extra structure.

Is this correct behavior, or is it a bug? I've tested this
in IDL 8.4.

Many thanks,

David

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[Message index]

		keyword inheritance in object graphics By: dg86 on Wed, 02 September 2015 07:58
		Re: keyword inheritance in object graphics By: penteado on Wed, 02 September 2015 12:50
		Re: keyword inheritance in object graphics By: dg86 on Wed, 02 September 2015 13:20
		Re: keyword inheritance in object graphics By: wlandsman on Wed, 02 September 2015 13:21

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