Results 31–40 of 226 for /science/.(0.002 seconds)
Device independent view of the CDF data model
Common Data Format (CDF) is a conceptual data abstraction for storing
multi-dimensional data sets. The basic component of CDF is a software
programming interface that is a device independent view of the CDF data
model. The application developer is insulated from the actual physical
file format for reasons of conceptual simplicity, device independence,
and future expandability. CDF files created on any given platform can
be transported to any other platform on to which CDF is ported and used
with any CDF tools or layered applications. A more detailed introduction
to CDF can be found in the CDF User's Guide.
A comparison between CDF, netCDF, HDF and HDF5 is available at
<http://cdf.gsfc.nasa.gov/html/FAQ.html>.
Climate Data Operators
CDO is a collection of command line Operators to manipulate and analyse Climate
model Data. Supported file formats are GRIB, netCDF, SERVICE, EXTRA and IEG.
There are more than 250 operators available. The following table gives a short
overview about the main categories.
* File information (info, sinfo, diff, ...)
* File operations (copy, cat, merge, split*, ...)
* Selection (selcode, selvar, sellevel, seltimestep, ...)
* Missing values (setctomiss, setmisstoc, setrtomiss)
* Arithmetic (add, sub, mul, div, ...)
* Mathematical functions (sqrt, exp, log, sin, cos, ...)
* Comparision (eq, ne, le, lt, ge, gt, ...)
* Conditions (ifthen, ifnotthen, ifthenc, ifnotthenc)
* Field statistic (fldsum, fldavg, fldstd, fldmin, fldmax, ...)
* Vertical statistic (vertsum, vertavg, vertstd, vertmin, ...)
* Time range statistic (timavg, yearavg, monavg, dayavg, ...)
* Ensemble statistic (enssum, ensavg, ensstd, ensmin, ...)
* Regression (detrend)
* Field interpolation (remapbil, remapcon, remapdis, ...)
* Vertical interpolation (ml2pl, ml2hl)
* Time interpolation (inttime, intyear)
CFD General Notation System library code
The CFD General Notation System (CGNS) provides a standard for recording and
recovering computer data associated with the numerical solution of the equations
of fluid dynamics.
Lightweight GRIBEX in C with portable Fortran interface
GRIBEX is an interface for encoding and decoding WMO FM-92 GRIB edition 1
messages and some ancillary subroutines for controlling printing and debugging.
The GRIBEX software was developed at the European Centre for Medium-range
Weather Forecasts (ECMWF) and is part of the EMOS library. EMOS is mostly
written in Fortran. Therefore it has only a Fortran interface.
CGRIBEX is a lightweight version of GRIBEX written in ANSI C with a portable
Fortran interface. For best compatibility some of the C sources were converted
from the Fortran GRIBEX version.
Analyze molecules for the presence of functional groups
Checkmol is a command-line utility program which reads molecular
structure files in different formats and analyzes the input
molecule for the presence of various functional groups and structural
elements. At present, approx. 200 different functional groups are
recognized. This output can be easily placed into a database table,
permitting the creation of chemical databases with a functional group
search option. Checkmol also outputs a set of statistical values derived
from a given molecule, which can also be used for quick retrieval from a
database. These values include: the number of atoms, bonds, and rings,
the number of differently hybridized carbon, oxgen, and nitrogen atoms,
the number of C=O double bonds, the number of rings of different sizes,
the number of rings containing nitrogen, oxygen, sulfur, the number of
aromatic rings, the number of heterocyclic rings, etc. The combination
of all of these values for a given molecule represents some kind of
"fingerprint" which is useful for rapid pre-selection in a database
structure/substructure search prior to a full atom-by-atom match.
Matchmol complements the capabilities of checkmol. It compares two (or
more) molecular structures and determines whether one of them is a
substructure of the other one. This is done by a full atom-by-atom
comparison of the input structures. Thus, matchmol can be used as a
back-end program for structure/substructure search operations in
chemical databases.
The port installs both checkmol and matchmol.
Collection of chemical MIME types for UNIX desktops
The chemical-mime-data package is a collection of data files to add support for
various chemical MIME types on Linux/UNIX desktops, such as KDE and GNOME.
Drawing organic molecules easily and store them (developer version)
Chemtool is a program for drawing organic molecules easily and store them as
a X bitmap file (develop version).
Scientific graphic library for geoscience
DCL is scientific graphic library for geoscience, written in Fortran.
Draw organic molecules easily and store them
Chemtool is a program for drawing organic molecules easily and storing
them as an X bitmap file.
Object-oriented toolkit for particle physics applications by CERN
CLHEP is intended to be a set of HEP-specific foundation and utility
classes such as random generators, physics vectors, geometry and
linear algebra.