[Mapserver-users] Rasterization help, TIF->SHP
poff
poff at sixbit.org
Mon Jun 23 10:55:11 PDT 2003
Hello,
I'm slightly new to this, but I tried following the instructions in the
documentation, and I am getting a 236 byte shp file from a 20something mb
tiff.
I will post my steps so you can perhaps tell me where I'm going wrong?
I'm using mapscript and apache on win2k.
################################
Tif file converted to 8bit uncompressed, 8192x4096, 32mb.
(if I view with ACDSee it states 256 colours, then in "properties" it
states 24 bit - by eye you can see it's 256 colour)
Wld file made:
0.0439453125
0
0
-0.0439453125
-180
+90
With the map file:
NAME WORLD_MAP
EXTENT -180 -90 180 90
SIZE 600 300
IMAGETYPE GIF
IMAGECOLOR 0 0 128
SHAPEPATH "data"
#FONTSET "d:/www/htdocs/data/symbols/fontset.txt"
#SYMBOLSET "data/symbols/examples.sym"
UNITS DD
WEB
IMAGEPATH "d:/www/htdocs/imgtmp/"
IMAGEURL "/imgtmp/"
END
LAYER # Countries
NAME "countries"
DATA "test"
STATUS DEFAULT
TYPE polygon
CLASS
COLOR 220 220 220
END # end of class object
END # end of layer object
END # end of map file
Ran:
gdaltindex test.shp test.tif
Generates a 236 byte shpfile, which gives a blank map (coloured) on output
with:
<?
$oMap = ms_newMapObj("test.map", "d:/www/htdocs/");
$oImage = $oMap->draw();
$url = $oImage->saveWebImage(MS_GIF,0,0,0);
printf("<IMG SRC=%s WIDTH=%d HEIGHT=%d>\n", $url, $oMap->width,
$oMap->height);
?>
Anyone got any ideas what's going wrong? I'm pretty sure something is wrong
with gdaltindex, shouldn't the shp file be a lot bigger?
I'd be very thankful for any light shed on this!
--
poff at sixbit.org
SDF Public Access UNIX System - http://sdf.lonestar.org
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