You could try using bilinear interpolation to make the grid more dense, or
you can use csps1 (which uses slines) see:
http://ngwww.ucar.edu/ngdoc/ng/conmaptutor/conpack/conpacka.html#HDR94
and
http://ngwww.ucar.edu/ngdoc/ng/conmaptutor/conpack/conpackc.html#REF31403
Hope this helps.
>
> I'm probably not the first person to have this problem,
> but I didn't recognize any of the archived messages as
> pertaining to it.
>
> I'm contouring a 20x20 point grid of data. The positive
> contours look fine, but the negative ones are bulls' eyes
> around the data points, up to 4 contours around each point.
> The data *are* close enough together that when I set the
> smoothing to be .001 the contours from different data points
> cross each other! When I try a large smoothing (>10.0) the
> contours turn in to polygons with the outer contours (all
> having the same value) almost touching each other.
> I called
> CALL CPSETR('T2D',SMTH)
> to do the smoothing.
> Negative values, which are supposed to interpolate the data
> before contouring it, did not help.
>
> I've considered manually interpolating the data before contouring
> it, but it seem like there should be better way within NCAR
> Graphics.
>
> Thanks,
> Kevin Raeder
>
>
>
>
This archive was generated by hypermail 2b29 : Wed Oct 25 2000 - 11:46:55 MDT