Hi Madhavan,
This data is, as you say, not on a grid, so you cannot read it
directly to a grid using those commands. You will need to read the
locations and variables as 1-dimensional lists and then use a
SCAT2GRID function to interpolate them to a grid.
The FILE/FORM=DELIMITED command will translate the date and time
information. An alias for that command is COLUMNS. You can take a
first look at the data with the PLOT/VS/RIBBON command to show the
locations of the data, colored by the values of a variable:
yes? columns/delim=\b/var="date,time,lon,lat,var1,var2"
arbsea_20060430.txt
yes? set var/units=degrees_east lon
yes? set var/units=degrees_north lat
yes? plot/vs/ribbon/thick/sym=17 lon,lat,var1
To interpolate to a grid, you would define an output grid and use
the scat2gridgauss_xy or scat2gridlaplace_xy function to interpolate
the data to that grid.
-Ansley
On 1/13/2015 12:28 AM, Madhavan BL
wrote:
Dear All,
I have an ASCII
data file with 6 columns:
[yyyy-mm-dd
hr:mi:se longitude(deg.E) latitude(deg.N) var1 var2]
Since my data
is not gridded properly, I am unable to convert my ASCII data
file into gridded netCDF file by Ferret. While I have followed
a similar post on converting an ASCII file to netCDF file when
the data is properly gridded, I still could not get my code
running properly to convert non-gridded ASCII data to netCDF
file. I have some lat-lon issues to read by ferret. Can anyone
suggest me how I can convert a non-gridded ASCII data to
netCDF file in ferret?
I am herein
attaching a my ASCII data file along with the ferret code I
have tried.
Look forward
for your favourable response,
Thanking you in
advance,
With regards,
Madhavan
----------------------------------------------------------
Dr.
Bomidi Lakshmi Madhavan
Remote
Sensing of Atmospheric Processes
Leibniz
Institute for Tropospheric Research (TROPOS)
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