User`s guide

R2006a
19-2
Full Support for 64-Bit Windows
Version 2.3 adds support for the mex- and library-based functions geotiffinfo,
geotiffread, sdtsinfo, and sdtsdemread on this new MATLAB platform via library
upgrades (described below) and a custom port of STDS++.
Third-Party Library and Code Upgrades
Third-party libraries and software packages have been upgraded to their current
versions to ensure best performance and compatibility with external geospatial data
sources and applications software:
• General Polygon Clipper (GPC) upgraded to Version 2.32
• PROJ.4 library upgraded to Version 4.4.9
• SDTS++ library upgraded to Version 1.5.1
• GeoTIFF library upgraded to Version 1.2.2
Support for 32-Bit Floating-Point GeoTIFF Images
The MATLAB function imread can now import TIFF images containing 32-bit floating-
point data. As a result, geotiffread now reads the corresponding variety of GeoTIFF.
Compatibility Considerations
The structure returned by geotiffinfo in V. 2.3 has changed. The following table
describes the differences between the current and previous versions:
Version 2.3 Previous Versions
The TiePoints structure contains
two substructures, ImagePoints and
WorldPoints. ImagePoints contains [1-
by-N] arrays Row and Col; WorldPoints
contains [1-by-N] arrays X and Y.
The TiePoints structure contained two
[3-by-1] arrays, ImagePoints and
WorldPoints.
The CornerCoords structure contains six
[1-by-4] row vectors, respectively, X, Y,
Col, Row, Lat, and Lon.
The CornerCoords structure contained six
[4-by-1] column vectors: PCSX, PCSY, X,
Y, LAT, and LON.