ncmerge Code
Merge multiple irregular NetCDF grids into an equirectangular grid.
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Tree [abdd6d] master v0.0.0 / History
| File | Date | Author | Commit |
|---|---|---|---|
| html | 2012-10-21 |
rsz
|
[abdd6d] Fixed scp command in readme. |
| libs | 2012-10-21 |
rsz
|
[8ec50d] Working with tiles all datatypes. |
| src | 2012-10-21 |
rsz
|
[8ec50d] Working with tiles all datatypes. |
| test | 2012-10-21 |
rsz
|
[15e6fb] Finished html. |
| COPYING | 2012-10-20 |
rsz
|
[079d35] Initial commit. |
| Makefile | 2012-10-21 |
rsz
|
[15e6fb] Finished html. |
| Makefile.inc | 2012-10-20 |
rsz
|
[079d35] Initial commit. |
| README.md | 2012-10-21 |
rsz
|
[abdd6d] Fixed scp command in readme. |
Read Me
ncmerge - Regrid Irregular NetCDF Data
Overview
ncmerge can combine
cell-based irregular grids very quickly into a single equirectangular
(Plate Carree) grid to simplify visualization workflows. It first
creates a map file from coordinate grids, and then performs fast
lookups when regridding data values. 3D time varying variables are supported.
Example
# Create map file once for all the coordinates.
GRIDS=1.nc,2.nc,3.nc,4.nc,5.nc,6.nc
ncmerge --map map.nc --eta --near 4 --grids $GRIDS --cells --gridvars xt,yt --nx 400 --ny 200
# Progress output.
# Done | Elapsed | Remaining | Processed | Unprocessed | Rate
# 100% | 00:00:00 | 00:00:00 | 80,000 pts | 0 pts | 685,365 pts/s
# Regrid the values.
ncmerge --map map.nc --tiles $GRIDS --var data -o regridded.nc
Figure 1. Original grids from 6 cubed sphere tiles.
Figure 2. Tiles visualized on a 3D sphere.
Figure 3. Tiles regridded onto unified grid by ncmerge.
Download
Installation
# After adjusting Makefile.inc.
make
make test
make install
make clean
News
v0.0.0 2012/10/19
- Initial release.
Distribution
make html
make dist VER=0.0.0
Publishing
ssh -t rsz,ncmerge@shell.sourceforge.net create
scp html/* rsz,ncmerge@shell.sourceforge.net:/home/project-web/ncmerge/htdocs
scp ../ncmerge-0.0.0.tar.gz rsz,ncmerge@shell.sourceforge.net:/home/frs/project/n/nc/ncmerge
License
Copyright 2012 Remik Ziemlinski under the terms of the GNU General Public License v3
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