Maptitude - http://research.umbc.edu/~roswell/maptitude.html
Richard:
>I got some preliminary files from
><http://edcwww.cr.usgs.gov/programs/lccp/ftpdownload.html>http://edcwww.cr.
>usgs.gov/programs/lccp/ftpdownload.html
>which is producing the The National Land Cover Data (NLCD) CDs. The FTP
>files are bin files. Can these be opened in Maptitude? (seems they cannot)
>The come as geo Tiffs on the CDs, but WA is not available, eastern states
>are available. This is an area I know nothing about - any pointers will be
>useful.
Maptitude does support GeoTIFF files, as a subset of TIFF files, but
apparently no software directly reads the BIN format;
(http://edcwww.cr.usgs.gov/pub/edcuser/vogel/states/aa_readme_1st.txt)
describes how to use the data, by importing it or manipulating it to be a
BIL file. Since SPOT Image files are BIL files, you will be able to use the
downloaded data with that image format choice. The tricks are:
1) Renaming the .BIN file to .BIL (easy)
2) Creating the .HDR file (harder). You will need to use the sample in the
(http://edcwww.cr.usgs.gov/pub/edcuser/vogel/states/flat2grid.txt) file and
the parameters in the state's readme file, e.g.
(http://edcwww.cr.usgs.gov/pub/edcuser/vogel/states/washington_readme_ver032
200.txt) for Washington State. The sample does not have the projection
parameters; the following, though it is the wrong projection, worked as a
first cut for Massachusetts:
BYTEORDER I
LAYOUT BIL
NROWS 6312
NCOLS 10672
NBANDS 1
NBITS 8
SKIPBYTES 0
ULXMAP 1826460
ULYMAP 2483430
XDIM 30
YDIM 30
PROJECTION STATEPLANE
MAPUNITS METERS
DATUM NAD83
ST_PROJ_CODE 2001
I will leave it to someone else to provide the proper projection parameters
for the Albers Conical Equal Area projection that is used for these data.
Peter
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Peter Van Demark
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Caliper Corporation Fax: 617-527-5113
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