[Mapserver-users] Extent
hien thu
hientb24 at yahoo.com
Thu Mar 18 21:57:47 EST 2004
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Hello !
I use AcrWiew 3.0 software to create shapefiles (.dbf, .shp, .shx extention).
Example : vung.dbf
I Open file `vung.dbf' using driver `ESRI Shapefile'
Layer name: vung
Geometry: Polygon
Feature Count: 7
Extent: (-95.809105, 41.500326) - (-82.209468, 48.311024)
Layer SRS WKT:
(unknown)
ID: Integer (8.0)
TENVUNG: String (16.0)
LOP: String (16.0)
OGRFeature(vung):0
ID (Integer) = 0
TENVUNG (String) = mÝnota
LOP (String) = nuoc
POLYGON ((-95.80910507 48.31102390,-93.32853131 47.70176017,-94.41650226 47.37536889,-95.80910507 48.31102390))
OGRFeature(vung):1
ID (Integer) = 0
TENVUNG (String) = bfdb
.....
example.map:
MAP
IMAGETYPE PNG
EXTENT -95.809105 41.500326 82.209468 -48.311024
SIZE 400 300
SHAPEPATH "data"
PROJECTION
"proj=laea"
"ellps=clrk66"
"lat_0=45"
"lon_0=-100"
#
# Alternatively, you can specify an EPSG code.
# "init=epsg:2163"
#
END
# Start of LAYER DEFINITIONS ---------------------------------------------
LAYER # States polygon layer begins here
NAME vung
DATA vung
STATUS DEFAULT
TYPE POLYGON
PROJECTION
"init=epsg:4326"
END
CLASSITEM "LOP"
CLASS
EXPRESSION 'dat'
COLOR 32 132 255
END
CLASS
COLOR 32 132 255
END
CLASS
EXPRESSION 'nuoc'
COLOR 198 198 255
END
END
END # End mapfile
But Image don't create without an error ?
I don't understand what happened ?
Can you tell me about " Extent" in Shapefile (e.g vung.dbf) relative with "Extent" in mapfile (e.g example.map)
Thank you very much.
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<DIV>Hello !</DIV>
<DIV>I use AcrWiew 3.0 software to create shapefiles (.dbf, .shp, .shx extention).</DIV>
<DIV>Example : vung.dbf </DIV>
<DIV>I Open file `vung.dbf' using driver `ESRI Shapefile' </DIV>
<DIV> </DIV>
<DIV>Layer name: vung<BR>Geometry: Polygon<BR>Feature Count: 7<BR>Extent: (-95.809105, 41.500326) - (-82.209468, 48.311024)<BR>Layer SRS WKT:<BR>(unknown)<BR>ID: Integer (8.0)<BR>TENVUNG: String (16.0)<BR>LOP: String (16.0)<BR>OGRFeature(vung):0<BR> ID (Integer) = 0<BR> TENVUNG (String) = mÝnota<BR> LOP (String) = nuoc<BR> POLYGON ((-95.80910507 48.31102390,-93.32853131 47.70176017,-94.41650226 47.37536889,-95.80910507 48.31102390))</DIV>
<DIV>OGRFeature(vung):1<BR> ID (Integer) = 0<BR> TENVUNG (String) = bfdb<BR>.....</DIV>
<DIV> </DIV>
<DIV>example.map:</DIV>
<DIV>MAP<BR> IMAGETYPE PNG<BR> EXTENT -95.809105 41.500326 82.209468 -48.311024<BR> SIZE 400 300<BR> SHAPEPATH "data"</DIV>
<DIV><BR> PROJECTION<BR> "proj=laea"<BR> "ellps=clrk66"<BR> "lat_0=45"<BR> "lon_0=-100"<BR> #<BR> # Alternatively, you can specify an EPSG code.<BR> # "init=epsg:2163"<BR> #<BR> END</DIV>
<DIV> </DIV>
<DIV> # Start of LAYER DEFINITIONS ---------------------------------------------<BR> LAYER # States polygon layer begins here<BR> NAME vung<BR> DATA vung<BR> STATUS DEFAULT<BR> TYPE POLYGON</DIV>
<DIV> </DIV>
<DIV> PROJECTION<BR> "init=epsg:4326"<BR> END</DIV>
<DIV> </DIV>
<DIV> CLASSITEM "LOP"<BR> CLASS<BR> EXPRESSION 'dat'<BR> COLOR 32 132 255<BR> END<BR> CLASS<BR> COLOR 32 132 255<BR> END<BR> CLASS<BR> EXPRESSION 'nuoc'<BR> COLOR 198 198 255<BR> END<BR> END </DIV>
<DIV>END # End mapfile</DIV>
<DIV> </DIV>
<DIV>But Image don't create without an error ?</DIV>
<DIV>I don't understand what happened ?</DIV>
<DIV>Can you tell me about " Extent" in Shapefile (e.g vung.dbf) relative with "Extent" in mapfile (e.g example.map)</DIV>
<DIV>Thank you very much.</DIV><p><font face=arial size=-1>Do you Yahoo!?<br>
<a href="http://us.rd.yahoo.com/mailtag_us/*http://mail.yahoo.com" target="_blank"><b>Yahoo! Mail</a></b> - More reliable, more storage, less spam
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