Re: local contour

Ahmad,

It depends on how many data points you have and what kind of smoothing you want.

If you use raster fill (res@cnFillMode = "RasterFill") you can turn on smoothing with res@cnRasterSmoothingOn = True.

We have some smoothing functions you can call. One is a 9-point smoother, "smth9":

http://www.ncl.ucar.edu/Document/Functions/Contributed/smth9_Wrap.shtml

Another is a weighted area smoother, "wgt_area_smooth":'

http://www.ncl.ucar.edu/Document/Functions/Built-in/wgt_area_smooth.shtml

You can also try various interpolations:

http://www.ncl.ucar.edu/Document/Functions/interp.shtml

--Mary

On Feb 17, 2014, at 11:41 AM, Ahmad Farsyud <a.farsyud@gmail.com> wrote:

> Hallo,
>
> What is a function to have a local contour plot? My case is, I have a data surrounded by missing value,,, and I want to have a smooth contour for some region around the missing values., is there any trick to handle this?
>
> Thanks
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Received on Tue Feb 18 08:50:56 2014