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The GEON Integrated Data Viewer (GIDV) - Contents
INTRO
Introducing the GEON IDV
INSTALL
Download & Run the GEON IDV
YOUR DATA Data Formats for the IDV |
UNAVCO's ASCII Data Format and Converters for Grids
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The IDV reads gridded data -- latitude-longitude-depth or x-y-z -- from NetCDF format files.
NetCDF files include user-defined metadata describing the data, in particular its mapping on the Earth, and units and names for variables.
(You can read lots of details about NetCDF.)
As a convenience for GEON IDV users who write gridded data in ASCII files, UNAVCO provides two format converters to make NetCDF formatted files from certain ASCII formats.
The format converters run on any system that runs Java and NetCDF code. If you can run the IDV, you can run the converters. You can include conversion to NetCDF in routine creation of ASCII files, to make equivalent NetCDF files for IDV use.
The UNAVCO online interactive data format converter
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This converter accepts several formats of ASCII data, but is limited to one parameter per grid. You may be able to
convert data files you have now to NetCDF with this converter.
The UNAVCO online interactive data format converter for ASCII list and column data files has a user interface where you enter control values to convert one data file with one parameter, in any of several ASCII formats, to a NetCDF file. This may be useful in converting some existing ASCII data such as the NGDC topography data
GIAG: A Proposed ASCII Format for Two-D and Three-D Grids (Longitude-Latitude (-Depth) )
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The GIAG format, GEON IDV ASCII Grids, is a simple ASCII file
format for 2D grids (one file at one depth) or
3D grids (multiple depths, one depth in each file),
mapped on the Earth on latitude-longitude-depth grids.
One or more parameters may be provided on the same grid.
Read about the UNAVCO GIAG format and Converter.
In the future we may get support to extend this format to provide support for multiple data times.
