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Posted by Philippe on December 4, 2006, 5:22 am
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Would you try Global Mapper?
It would took you two seconds to load d329419_1.zip.
Metadata:
FILENAME=d329419_1.sid (C:\DOCUMENTS AND SETTINGS\ALL
USERS\DOCUMENTS\TESTS\D329419_1.ZIP)
DESCRIPTION=d329419_1.sid
UPPER LEFT X=335628.000
UPPER LEFT Y=3625237.000
LOWER RIGHT X=342218.000
LOWER RIGHT Y=3617592.000
WEST LONGITUDE=94.754580° W
NORTH LATITUDE=32.753695° N
EAST LONGITUDE=94.682967° W
SOUTH LATITUDE=32.683799° N
NUM COLUMNS=6590
NUM ROWS=7645
PIXEL WIDTH=1 meters
PIXEL HEIGHT=1 meters
Projection :
UTM15/NAD83
Then, maybe a little more seconds to export to a GeoTIFF or JPG format (+
PRJ + JPW) with the registered version which is affordable.
Cheers
JQ1ch.1702$Py2.866@newssvr27.news.prodigy.net...
> Below is a copy of an email I sent to lizardtech.com Wednesday
> night . They have not yet responded . I'm hoping one or more
> of you guys can help instead .
>
> WARNING : The zip files available from the FTP server below
> are about 8.5 megabytes each .
>
> _________________________________________________
>
>
> I am a Surveying & CAD technician, but a newbie when it
> comes to GIS. I am interested in purchasing a GeoExpress
> View (with MrSID) license if the program can do what I
> need it to do, which is report the actual size (either
> in Lat/Lon or UTM coordinates) of files I download from
>
> http://www.tnris.state.tx.us
>
>
> One example would be
>
> ftp://ftp2.tnris.org/Imagery/NAIP04/1m/3294/d329419_1.zip
>
> which contains a MrSID file and three metadata files. Two
> statements from d329419_1.txt are as follows:
>
> "The tiling format of NAIP imagery is based on a
> 3.75'x 3.75' quarter quadrangle with a 360 meter
> buffer on all four sides."
>
> ....but much further down in the same text file....
>
> "These final DOQQ sheets contain a 300m minimum buffer."
>
> The MrSID files supposedly have a resolution of one meter
> per pixel, but the actual dimensions (in meters) of each
> edge of the MrSID file do *NOT* correspond to the number of
> pixels along each edge of said file.
>
> I could find no statements within d329419_1.txt
> that told me the actual outer limits of the d329419_1.sid
> buffer zone, either in latitude & longitude or UTM NAD 83
> coordinates.
>
> Yet I know that one of the metadata files (or the SID file
> itself) included in the zip file contains exact georeference
> data, because Lizardtech Software's GeoExpress View program
> can seamlessly merge the d329419_1.sid image with the (South
> adjoining) d329419_3.sid image. When viewed on screen there
> is an obvious East-West offset, and a larger North-South
> overlap, involved in merging the two images correctly.
>
> I need to know the true limits (not the nominal 3.75' x 3.75'
> "boundary"), either in Lat/Lon or UTM coordinates, of each SID
> image I download from the aforementioned ftp server so I can
> properly size a resulting TIFF or JPG image inserted into an
> AutoCad or IntelliCad DWG file. This would allow me to query
> the CAD program about the approximate UTM distance between any
> two visible features contained in each SID image.
>
> Thanks for your help.
>
> Joe Johnston
> joejohn@sbcglobal.net
>
> ____________________________________________________
>
>
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