Install_UGRIB exe Popularity; Total Downloads: 21,049: Downloads Last Week: 41 Download a large number of media files from the Web.. Climate Prediction Center - wgrib2: -i -i_file Search CPC Search About Us Contact Us > > > > wgrib2-i -i_file wgrib2: -i, -i_file Introduction The -i option specifies that wgrib2 should read STDIN to determine the records to be processed.
-sh-2 05b$ wgrib2 small grb 1:0:d=:PRATE:surface:54-60 hour fcst 2:110654:d=:TMP:2 m above ground:60 hour fcst As expected, the new grib file only has the desired two fields.. grb -rwxr-xr-x 1 wd51we wd5 378-05-25 15:16 test grb2 As you can see, the new file is much smaller than the original file.
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e , egrep '(A|B)' -sh-2 05b$ wgrib2 test grb2 -s| egrep '(:TMP:2 m|:PRATE:)' 29:d=:PRATE:surface:54-60 hour fcst 28:d=:TMP:2 m above ground:60 hour fcst Now that we have selected the records, we can send the output (inventory) back into wgrib2 to manipulate.. -sh-2 05b$ wgrib2 test grb2 -s| egrep '(:TMP:2 m|:PRATE:)'| wgrib2 -i test grb2 -grib small.. The -i_file option is similar except that wgrib2 reads file a user-specified file to determine the records to be processed.. Rather than fill up your disk with big files, you can easily extract the required fields.. 23:d=:GPA:1000 mb:60 hour fcst 22:d=:GPA:500 mb:60 hour fcst 21:d=:5WAVA:500 mb:60 hour fcst Information overload. Corel Draw 12 Key Generator Download
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Decoding a Single record Another use of the -i option is to specify the field to decode.. grb 29:d=:PRATE:surface:54-60 hour fcst 28:d=:TMP:2 m above ground:60 hour fcst The above command made a grib2 file consisting of the precipation (PRATE) and 2-m temperature (TMP).. The first step is to figure what is in the grib file -sh-2 05b$ wgrib2 test grb2 -s 1:0:d=:HGT:1000 mb:60 hour fcst 2:133907:d=:HGT:975 mb:60 hour fcst 3:263511:d=:HGT:950 mb:60 hour fcst 4:389058:d=:HGT:925 mb:60 hour fcst 5:511037:d=:HGT:900 mb:60 hour fcst 6:630256:d=:HGT:850 mb:60 hour fcst 7:745505:d=:HGT:800 mb:60 hour fcst.. Lets see if you can find the desired variables -sh-2 05b$ wgrib2 test grb2 -s| grep ':TMP:2 m' 28:d=:TMP:2 m above ground:60 hour fcst Found the 2-m temperature, can we find the precipitation?-sh-2.. We found the fields Now we need to combine the above into a single command using the or option of egrep; i.. Suppose you have a big grib file but you only want the 2-meter temperature and the precipitation.. -sh-2 05b$ ls -l test grb2 small grb -rw-r--r-- 1 wd51we wd5 2-10-16 15:08 small. 518b7cbc7d
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