The following changes to the WMAP software distribution have been implemented since V1.0 01-Oct-2009: Release of V3.0 An indexing problem in the lonlat/nosel section of COORTRANS was corrected. A more robust version of GET_ROT_MATRIX was delivered. Multiple map support was added to FITS_REPROJ_HEALPIX. 16-Aug-2006: Release of V2.0 Added TOD_TO_SKY_COORDS - New procedure to extract a time series of coordinates from an array of time-ordered data records Added FITS_READ_COMBINED_MAP - New procedure to read a combined temperature/polarization map as delivered by the WMAP team to LAMBDA. Modified FITS_READ_TOD - This procedure, which reads the time-ordered data FITS files, has been modified to read a one channel TOD FITS file (as released in the first WMAP data release; this was the original behaviour of this procedure), a two channel TOD file (as provided in calibrated TOD data of the second WMAP data release), and a four channel TOD file (as provided in the uncalibrated TOD data of the second WMAP data release). 23-Jul-2004: Release of V1.3 22-Jul-2004: HEALPIX_TO_IMAGE - Fixed incorrect call to STDDEV() 08-Jul-2004: INTERPOLATE_QUATERNIONS - New procedure to interpolate quaternions extracted from WMAP time-ordered data MAPVIEW - Now contains a widget entry field for a HEALPIX FITS file name, i.e. one no longer needs to specify the FILENAME or ARRAY keywords. Also, data I/O has been made more efficient 28-Jul-2003: Release of V1.2 18-Jul-2003: FITS_REPROJ_HEALPIX - Convert a HealPix image to a flatmap FITS file with world coordinate system (WCS) information 18-Jul-2003: MAPVIEW - Added PNG file output, fixed bug with ring maps 23-May-2003: SCAN_OVERLAY, GRID_OVERLAY - Work on Windows devices Software now available in a .zip file for Windows users 20-May-2003: HEALPIX_NESTED_VECTORS, LOAD_MAP_PARAMS, SCAN_OVERLAY, PLANET_OVERLAY GET_HEAL_LUT, GET_PRT_TEMP - updated to use CONCAT_DIR to concatenate directories on non-Unix systems 18-Apr-2003: MAPVIEW - Now has ARRAY keyword to read from an array instead of a file 16-Apr-2003: FITS_READ_MAP - Close open file unit, new keyword PHeader to return the primary header 19-Mar-2003: Release of V1.1 17-Mar-2003: HEALPIX_TO_IMAGE (called by MAPVIEW) modified to avoid negative logarithms when logarithmic scaling is specified 06-Mar-2003: QUAT_TO_SKY_COORDS -- Modified to use the mean optical axis if the DA_STR parameter is not supplied 14-Feb-2003: HealPix V1.2 (released 10-Feb) introduced two incompatibilities in the MAPVIEW program. (1) EULER_MATRIX no longer works, but instead instructs users to use EULER_MATRIX_NEW (with a different sign convention) (2) DATA2GNOM has a different calling sequence, and calls a new routine VECTOR_MAP MAPVIEW was modified to call EULER_MATRIX_NEW (with the new sign convention) and the Healpix 1.2 version of DATA2GNOM was renamed to WMAP_DATA2GNOM. Copies of EULER_MATRIX_NEW, VECTOR_MAP and WMAP_DATA2GNOM are then included in the WMAP distribution to provide compatibility for users with HealPix V1.1. Updated wmap_idl_installation.txt to indicate that procedures to add to the !PATh are located in /home/user/wmap/pro not /home/user/wmap. Introduce the (much smaller) tar file wmap_IDLpro_v11.tar containing only the procedure library plus any updated reference files. 12-Feb-2003: New procedure SCAN_OVERLAY to plot WMAP's scan path using quaternion data. SCAN_OVERLAY calls the new procedures Q2M - Convert quaternions to rotation matrices QUAT_TO_SKY_COORDS - Extract coordinates from input quaternions FITS binary table map_los.fits added to the $MAP_REF directory FITS_READ_MAP modified to not read the number of observations column unless requested New "WIDGETS" category added to the list_of_routines to match the Explanatory Supplement. File updated with new procedures. Tar file renamed to wmap_IDL_v11.tar.gz