Bob,
> I would like to plot multiple ellipses on one frame. I read
> about the Autograph routines such as EZMXY. Each ellipse is defined
> by a set of coordinates (X(I), Y(I)). I have "M" of these ellipses.
> Each ellipse has a different set of X(I) values. And of course the
> Y(I) values are different for each ellipse. It looks to me like EZMXY
> will plot multiple curves but uses the same set of X(i) values for
> each curve. If this is true, then EZMXY will not do the job.
>
> Any suggestions on what to use to plot these ellipses on one
> frame? The X(I)'s will vary in value. I could always get the max/min
> for the X's and Y's and preset them. But how can I plot the actual
> ellipses.
As I recall, by default, the X array in a call to EZMXY is interpreted
to be a singly-dimensioned array, but there is an internal parameter
(called 'ROW.', I think) that you can change to tell AUTOGRAPH that
the X array is doubly-dimensioned (so that you can have a different
set of X's for each ellipse). However, you would still be required
to have the same number of points defining each ellipse. If you want
to have a different number of points for each ellipse, you will have
to replace the call to EZMXY with a set of lower-level calls to AGSTUP,
AGBACK, and AGCURV.
I would be more precise about this, but I'm sending this from home and
my connection to NCAR is slower than s ... well, it's slow ... tonight.
Dave Kennison
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