Can someone help me out with a small problem?
I've started using netcdf files recently, and I want to extract the grid id
and also the coordinates from a HIRHAM netcdf file.
I know how to extract a slice of dataset both in space and in time and I
also know the area that this file should cover,
On Jul 29, 2011, at 10:44 AM, Ana wrote:
Can someone help me out with a small problem?
I've started using netcdf files recently, and I want to extract the
grid id
and also the coordinates from a HIRHAM netcdf file.
I know how to extract a slice of dataset both in space and in time
and I
I am not familiar with the HIRHAM netcdf files. Do you have the netcdf library
installed and can you print the output of the ncdump -h command on one of the
files?
-Roy
On Jul 29, 2011, at 7:44 AM, Ana wrote:
Can someone help me out with a small problem?
I've started using netcdf files
This problem may be more related to netcdf files than to RAnd the
answer to your question very much depends on which netcdf convention
the AWI folks who created your data followed. Additionally it depends on
the Software you use to read these ncdf files.
Regarding the grid locations
On Fri, Jul 29, 2011 at 7:44 AM, Ana rrast...@gmail.com wrote:
Can someone help me out with a small problem?
I've started using netcdf files recently, and I want to extract the grid id
and also the coordinates from a HIRHAM netcdf file.
I know how to extract a slice of dataset both in space
Hi Roy and David,
My main problem is how to interpret the coordinate system.
If I try to open it directly in a GIS software that supports necdf
format, the location is far away from where it should be (plots
rlong,rlat).
All I want to do is to get a data.frame with a column for long,
another for
Hi Ana:
On Jul 29, 2011, at 8:03 AM, Ana wrote:
netcdf precip.DMI.HS1 {
dimensions:
rlat = 84 ;
rlon = 90 ;
time = 10800 ;
time_bnds = 2 ;
variables:
float lat(rlat, rlon) ;
lat:standard_name = latitude ;
lat:long_name = latitude
Well, the CF ncdf convention (for example) suggests to use variables
with identical names as the dimensions as coordinate variables. In your
case the dimensions are called rlat/rlong so the software uses these
rotated axes. In your file you however also have variables lat and long
and they
float lat(rlat, rlon) ;
lat:standard_name = latitude ;
lat:long_name = latitude ;
lat:units = degrees_north ;
float lon(rlat, rlon) ;
lon:standard_name = longitude ;
lon:long_name = longitude ;
The rlat and rlon variables are the grid coordinate system, which
appears to be some non-standard conical projection. Climate
scientists!
Actually this file, as it contents state, follow the CF convention, which is
widely used in climate science, oceanography and atmospheric science
Hi! Thank you all. I finally understood the way to solve the problem
from Barry's mail.
From the file created with coordinates(Lat,Long) using fan, everything
looks ok (wgs84). I will now try Bryan's approach in R.
Ana
On Fri, Jul 29, 2011 at 4:22 PM, Barry Rowlingson
On Fri, Jul 29, 2011 at 4:32 PM, Roy Mendelssohn
roy.mendelss...@noaa.gov wrote:
Actually this file, as it contents state, follow the CF convention, which is
widely used in climate science, oceanography and atmospheric science (see
http://cf-pcmdi.llnl.gov/documents/cf-conventions). The
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