C++ routines for the BYU-MERS "SIR" image format
Revised 2017 to include EASE2 standard projections.

The BYU-MERS "sir" image format was developed by the Brigham Young
University (BYU) Microwave Earth Remote Sensing (MERS) research group
to store images of the earth along with the information required to
earth-locate the image pixels.

Note that these routines use the C-standard pixel address from 0 to N-1
rather than the SIR-standard pixel address from 1 to N.  Note, however, that
(1,1) is in the lower left of the image of a SIR File.  For an input location
of pixel (1,1) the Lat,Lon values returned by pixtolatlon correspond to 
the location of the lower-left corner of the (1,1)th pixel.

This directory contains several programs which illustrate reading and
writing BYU SIR files.  The programs include utilities to convert the
SIR files into other file formats.

Library routines are in lib/ and include libsir.cpp which is the C++
interface to C code contained in the C version of the library.

Some C++ programs illustrating of how to call the various routines and to 
convert SIR files to various other image types are in this directory.  Given
an input SIR file, the program sirlocmap creates SIR images of the
latitude and longitudue values of the SIR file. 

==============================================================================

Dr. David G. Long                                     long@ee.byu.edu
Professor, Electrical and Computer Eng. Dept.  http://www.ee.byu.edu/
Brigham Young University                          http://www.byu.edu/
459 Clyde Building                                voice: 801-422-4383
Provo, Utah    84602                                fax: 801-422-0201

Scatterometer Climate Record Pathfinder (SCP)  http://www.scp.byu.edu

==============================================================================

Last revised:  6 Aug 2017  DGL
(c) 2003, 2017 BYU MERS