These zip archives contain files relating to the Noise Model Grid Format 
(NMGF) standard.  This standard describes a file format used to hold 
georeferenced scalar data sets.  

These files are PKZIP compressed archives.  They may be decompressed with 
the pkunzip.exe decompression utility, which may be obtained on the world 
wide web at http://www.pkware.com.


 nmgf.zip
----------

    A PKZIP archive containing the documentation for the latest version
    of the NMGF standard, along with the C/C++ library for writing NMGF
    files.  The archive contains the following files:

        NMGFSTD.DOC - Document describing the NMGF standard, in Microsoft
                      Word for Windows 7.0 format.

        NMGFSTD.RTF - Document describing the NMGF standard, in Rich Text 
                      Format (RTF).

        NMBGFIOL.C - Source code for ANSI C version of the NMGF I/O Library.
        NMBGFIOL.H   This library contains subroutines to aid in the writing
                     of NMGF files.

        NMBGFIOC.CPP - Source code for the C++ version of the NMGF I/O 
        NMBGFIOC.H     Library.   

        SAMPLE.C - Sample ANSI C program that demonstrates the use of the
                   ANSI C version of the NMGF I/O Library.  It writes both a
                   NMBGF binary subtype grid file and a NMAGF ASCII suptype 
                   grid file.

        ASAMPLE.GRD - The NMAGF ASCII Subtype grid file created when the 
                      SAMPLE.C program is compiled and executed.

        BSAMPLE.GRD - The NMBGF Binary Subtype grid file created when the 
                      SAMPLE.C program is compiled and executed.

        SAMPLECP.CPP - Sample C++ program that demonstrates the use of the
                       C++ version of the NMGF I/O Library.  It writes both a
                       NMBGF binary subtype grid file and a NMAGF ASCII 
                       suptype grid file.

        APSAMPLE.GRD - The NMAGF ASCII Subtype grid file created when the 
                       SAMPLECP.C program is compiled and executed.

        BPSAMPLE.GRD - The NMBGF Binary Subtype grid file created when the 
                       SAMPLECP.C program is compiled and executed.


 nmapsamp.zip
--------------

    A PKZIP archive containing sample programs illustrating how to
    write Noisemap .grd grid files, .fea feature files, and .top topography
    files.  Noisemap is an airport noise model developed by the United States
    Air Force.  While these files are intended for the developers of 
    Noisemap, other developers may be interested in them, as they provide
    additional examples of the use of the NMGF I/O Library.  In particular,
    TOPOSAMP.C provides an excellent quick-start example for someone who
    wants to translate a simple 2-D grid into the NMGF format.

        NMAPSAMP.C - Source code for an ANSI C program that creates a sample
                     Noisemap .grd grid file.

        NMAPSAMP.GRD - Sample Noisemap .grd grid file created when the 
                       NMAPSAMP.C program is compiled and executed.

        TOPOSAMP.C - Source code for an ANSI C program that creates a sample
                     Noisemap .top topography file.

        TOPOSAMP.TOP - Sample Noisemap .top topography file created when the 
                       TOPOSAMP.C program is compiled and executed.

        FEATSAMP.C - Source code for an ANSI C program that creates a sample
                     Noisemap .fea feature file.

        FEATSAMP.FEA - Sample Noisemap .fea feature file created when the 
                       FEATSAMP.C program is compiled and executed.