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Re: how to plot polar grid data (ascii) in ferret only north/southpole
Hi Ramesh,
Hope by polar co-ordinate you mean curvilinear grid. Ferret offers
utilities for visualization and regridding (to regular rectilinear grid)
of curvilinear data. If you can handle ascii data in Ferret, please have a
look at the following references:
visualization :
---------------
Three-argument (curvilinear) version of SHADE, FILL, CONTOUR, and VECTOR
Ch6 Sec10. MAP PROJECTIONS AND CURVILINEAR COORDINATES
regridding :
---------------
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2003/msg01347.html
If you need any more clarification please post back all the relevant details
and a subset of your ascii data.
With Regards
Jaison
On Wed, 27 Oct 2004, K V Ramesh wrote:
> Dear ferret users,
>
> I have an ascii file which, contains longitude,
> latitude and variabile in polar coordinate.
> Is it possible for me to generate a netcdf
> file using ferret Or is it possible to view
> in ferret. If so please help me to do this.
> If not bye ferret, how can I generate a polar
> grid data in netcdf file.
> ____________________________________________
> I have tried to generate netcdf file by
> reading lat-lon values. It gave the following error.
> ***********
> alias daxis1 def axis/x/from_data/x/npoints=448/name=xax
> daxis1/unit=deg lons[d=1,i=1:448]
> **ERROR: improper grid or axis definition: data for DEFINE
> AXIS/FROM_VARIABLE is not monotonic
> def axis/x/from_data/x/npoints=448/name=xax/unit=deg lons[d=1,i=1:448]
> Command file, command group, or REPEAT execution aborted
> *******************
> Thanks in advance.
>
> With regards,
> Ramesh
>
--
___________________________________________________
Jaison Kurian
Centre for Atmospheric and Oceanic Sciences
Indian Institute of Science
B A N G A L O R E 560 012
Ph: +91-80-3942505
+91-80-3600450
Fax:+91-80-3600865
___________________________________________________
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