[ncl-talk] Regridding irregularly spaced data onto a regular grid

zilore mumba zmumba at yahoo.com
Sat Jul 26 16:40:39 MDT 2014

I have x,y,z data on an irregularly spaced geographical grid, which I want to put on a regular grid to be able to plot contours.
My data is below (id, long., lat., rainfall).
01  28.92  -2.47  286.5
02  29.02  -2.68  168.8
03  29.25  -1.67  243.4
04  29.42  -2.07  204.9
05  29.55  -1.58  286.9
06  29.57  -2.48  230.
07  29.6   -1.5   177.5
08  29.72  -2.18  290.
09  30.05  -1.6   206.5
10  30.13  -1.97  178.1
11  30.5   -2.15  156.7
My sincere apologies because this is a question I already asked more than 6 months ago and I still have not found a solution.
The question is: Is it possible to do what I want to do in ncl?
1. I have tried 2dgrid.ncl which seems to but am not able to figure out how to write output to file, and the z values all seem to be above 370 (well above what I have in my file).
2. I have try the Fortran single precision linear interpolation at Natgrid Examples and run the fortran program with ncargf77 filename I get the errors below:
Advice will be appreciated.

ncargf77 natgrid.f
gfortran -fPIC -fno-second-underscore -fno-range-check -fopenmp -O natgrid.f -L/usr/local/lib -L/usr/X11R6/lib64 -lncarg -lncarg_gks -lncarg_c -lX11 -lXext -lcairo -lfontconfig -lpixman-1 -lfreetype -lexpat -lpng -lz -liconv -lXrender -lbz2
/usr/bin/ld: cannot find -lX11
/usr/bin/ld: cannot find -lXext
/usr/bin/ld: cannot find -lcairo
/usr/bin/ld: cannot find -lfontconfig
/usr/bin/ld: cannot find -lpixman-1
/usr/bin/ld: cannot find -lfreetype
/usr/bin/ld: cannot find -lexpat
/usr/bin/ld: cannot find -liconv
/usr/bin/ld: cannot find -lXrender
/usr/bin/ld: cannot find -lbz2
collect2: error: ld returned 1 exit status

Natgrid Examples
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