[Mapserver-users] Spatial extent for shape file?

[Twan Kogels]

Hello Steve,

Thanks for the quick and usefull reply! I just compiled the shpinfo 
supplied with gdal and let it analyze the .shp file, the result was the 
needed spatial extent.

Thanks again,
Twan Kogels

At 08:06 11-6-2003 -0400, you wrote:
>This is easy now that you have the tileindex! Use shpdump or shpinfo
>and the extents of your data will be the extents of your tileindex.
>
>-Steve W.
>
>On 11 Jun 2003 at 13:48, Twan Kogels wrote:
>
> > Hello,
> >
> > It's been a while since i used mapserver. Yesterday i received a cdrom
> > with raster maps, today i'm getting it to work. The cdrom contains a
> > lot of tiff files which represent a tiled map. The tiff files are of
> > format "GTiff/GeoTIFF". I used the "gdaltindex" program to make a shp
> > index of all the tiles.
> >
> > The cdrom also contains a esri .tfw (or mapserver .wld) and a .tab
> > file for every single tiff file.
> >
> > I'm now making my .map file which mapserver should use, but i'm stuck
> > at defining the EXTENT line. I've looked for documentation about the
> > tiff files on cdrom but found none. The info in the .tab file is
> > interesting: ============================= !table !version 300
> > !charset WindowsLatin1
> >
> > Definition Table
> > File "1000047.TIF"
> > Type "RASTER"
> > (0,376000) (0,5333) Label "Pt 1",
> > (0,384000) (0,0) Label "Pt 2",
> > (12000,384000) (8000,0) Label "Pt 3",
> > (12000,376000) (8000,5333) Label "Pt 4"
> > CoordSys Earth Projection 20, 109, "m", 5.387638889, 52.156160556,
> > 0.9999079, 155000, 463000 Units "m" =============================
> >
> > The output of the program "gdalinfo" analyzing a tiff file on cdrom is
> > also interesting: ============================= gdalinfo 4000007.TIF
> > Driver: GTiff/GeoTIFF Size is 1778, 1185 Coordinate System is `'
> > Origin = (-20.250000,384020.250000) Pixel Size =
> > (40.500000,-40.500000) Metadata:
> >    TIFFTAG_SOFTWARE=Handmade Software, Inc. Image Alchemy v1.7.7
> > Corner Coordinates:
> > Upper Left  (     -20.250,  384020.250)
> > Lower Left  (     -20.250,  336027.750)
> > Upper Right (   71988.750,  384020.250)
> > Lower Right (   71988.750,  336027.750)
> > Center      (   35984.250,  360024.000)
> > Band 1 Block=1778x8 Type=Byte, ColorInterp=Red
> > Band 2 Block=1778x8 Type=Byte, ColorInterp=Green
> > Band 3 Block=1778x8 Type=Byte, ColorInterp=Blue
> > Band 4 Block=1778x8 Type=Byte, ColorInterp=Alpha
> > =============================
> >
> > I know the the EXTENT line in the .map file means the lower left
> > coordinates en the upper right coordinates, but i don't know how to
> > get this information in my case.
> >
> > The output of gdaltinfo shows several "Corner Coordinates", but i have
> > used gdaltindex to make a .shp file and now i'm using that shape file
> > as index in my .map file: ============================== LAYER
> >    NAME "test"
> >    STATUS ON
> >    TILEINDEX "test.shp"
> >    TILEITEM "Location"
> >    TYPE RASTER
> > END
> > ===============================
> > so, this renders the gdaltinfo useless, cause the Corner Coordinates
> > aren't correct anymore.
> >
> > The line:
> > ===============================
> > CoordSys Earth Projection 20, 109, "m", 5.387638889, 52.156160556,
> > 0.9999079, 155000, 463000 =============================== in the .tab
> > file seems interesting, but i could not find any information about the
> > meaning of those numbers. Could i get the values for EXTENT from this
> > line? Or is there maybe a program which calculates the EXTENT or
> > Corner Coordinates for a given .shp file?
> >
> > Best regards,
> > Twan Kogels
> >
> > _______________________________________________
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> > Mapserver-users at lists.gis.umn.edu
> > http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> >