RC,
>Date: Fri, 23 Feb 2001 09:47:31 -0500
>From: RC <recif@xxxxxxxxx>
>To: visad-list@xxxxxxxxxxxxx
>Subject: Display of 1D data from a 2D image
The above message contained the following:
> Is there a relatively straightforward way in visad for the data values
> corresponding to a line being dragged across an image to be displayed
> in a plot (somewhat as in Collage available from NCSA)?
I'm not sure what you're asking, exactly. If you want to plot the range
values of a ((x,y)->z) field as a function of position (s) along a line
segment then, yes, VisAD can do this. Represent the line segment as
an (s->(x,y)) FlatField. Everytime the line segment is moved, convert
its new range values into a set and then use that set to resample the
((x,y)->z) field. Finally, modify the range values of a displayed
(s->z) field according to the resampling.
Regards,
Steve Emmerson <http://www.unidata.ucar.edu>
