The NCEP general interpolation library contains Fortran 90 subprograms to be used for interpolating between nearly all grids used at NCEP. The library is particularly efficient when interpolating many fields at one time. It also contains routines for spectral transforms and other processing, including those previously contained in the NCEPLIBS-sp library.
This is part of the NCEPLIBS project.
There are currently six interpolation methods available in the library:
- bilinear
- bicubic
- neighbor
- budget
- spectral
- neighbor-budget
For full documentation see https://noaa-emc.github.io/NCEPLIBS-ip/.
To submit bug reports, feature requests, or other code-related issues including installation and usage questions, please create a GitHub issue. For general NCEPLIBS inquiries, contact Ed Hartnett (secondary point of contact Alex Richert).
- NCEP/EMC Developers
Code Manager: Alex Richert
This package requires a BLAS/LAPACK library to provide several LU decomposition-related routines, and requires CMake (version 3.15+) to build. See documentation for details on setting the BLAS/LAPACK library.
git clone https://github.com/NOAA-EMC/NCEPLIBS-ip
cmake -DCMAKE_INSTALL_PREFIX=/path/to/install -S NCEPLIBS-ip -B NCEPLIBS-ip/build # <add'l CMake options>
cmake --build NCEPLIBS-ip/build --parallel 4
ctest --test-dir NCEPLIBS-ip/build --parallel 4 # <add'l CTest options>
cmake --install NCEPLIBS-ip/buildCommonly useful CMake options include:
-DCMAKE_INSTALL_PREFIX: path to install directory (default is /usr/local)-DBUILD_SHARED_LIBS: build dynamically linked (shared) libraries (default is static)
Commonly useful CTest options include:
--output-on-failure: show verbose output only when a test fails-L/--label-regex: only run test labels matching a given regular expression-R/--tests-regex: only run tests matching a given regular expression
NCEPLIBS-ip is also available through Spack as 'ip'.
Most routines and any public interfaces required can be accessed by adding use ip_mod to your Fortran code. Spectral transform and processing subroutines
previously associated with the NCEPLIBS-sp library can be accessed by calling
with use sp_mod.
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