Skip to content

Add support for template 3.33 #1590

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
lesserwhirls merged 1 commit into from
Aug 10, 2026
Merged

Add support for template 3.33 #1590

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
24 changes: 24 additions & 0 deletions grib/src/main/java/ucar/nc2/grib/grib2/Grib2Gds.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,9 @@ public static Grib2Gds factory(int template, byte[] data) {
case 30:
result = new LambertConformal(data, 30);
break;
case 33:
result = new LambertConformalWithModellingSubdomains(data, 33);
break;
case 31:
result = new AlbersEqualArea(data);
break;
Expand Down Expand Up @@ -1314,6 +1317,27 @@ public void testHorizCoordSys(Formatter f) {

}

/*
* Template 3.33 (Grid definition template 3.33 - Lambert Conformal with Modelling Subdomains)
* 15-81: Same as grid definition template 3.30
* 82–85 (4): Nux – size of model forecast subdomain in x–direction (number of grid points)
* 86–89 (4): Ncx – width of coupling area within forecast domain in x–direction (number of grid points)
* 90–93 (4): Nuy – size of model forecast subdomain in y–direction (number of grid points)
* 94–97 (4): Ncy – width of coupling area within forecast domain in y–direction (number of grid points)
*/
public static class LambertConformalWithModellingSubdomains extends LambertConformal {
final int nux, ncx, nuy, ncy;

LambertConformalWithModellingSubdomains(byte[] data, int template) {
super(data, template);

nux = getOctet4(82);
ncx = getOctet4(86);
nuy = getOctet4(90);
ncy = getOctet4(94);
}
}

/*
* (3.40) Grid definition template 3.40 - Gaussian latitude/longitude
* Template 3.40 (Grid definition template 3.40 - Gaussian latitude/longitude)
Expand Down