MATLAB utilities for the BYU-MERS "SIR" image format 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. Files in this directory are useful for reading SIR files into matlab and locating pixels. Use loadsir.m to load the file into memory. Main routines: (version 2.0 SIR format) loadsir.m loads image and header information into matlab printsirhead.m prints out the header information from loadsir pix2latlon.m given a pixel location, compute lat and lon latlon2pix.m compute pixel location given lat and lon sirheadtext.m modifies text fields of sir header before write writesir.m writes sir format file Support routines: easegrid.m forward EASE grid transformation ieasegrid.m inverse EASE grid transformation ilambert1.m inverse Lambert grid transformation ipolster.m inverse polar stereographic grid transformation lambert1.m forward Lambert grid transformation mod.m compute modulo function polster.m forward polar stereographic grid transformation Other files: Contents.m Matlab help file readme.txt this file scaleimage.m utility to scale image for display showsir.m simplified display routine for sir image If you have any questions, please contact me. David ============================================================================== Dr. David G. Long long@ee.byu.edu Associate Professor voice: (801) 378-4383 Electrical and Computer Engineering Department fax: (801) 378-6586 459 Clyde Building Brigham Young University Provo, Utah 84602 BYU Electrical and Computer Engineering home page: http://www.ee.byu.edu/ BYU Microwave Earth Remote Sensing (MERS) Laboratory home page: http://www.ee.byu.edu/ee/mers/mers-home.html ============================================================================== Last revised: 9 April 1997 DGL (c) 1997 BYU MERS