Just trying to get a better understanding.
Ethan Alpert
ealpert at DIGITALGLOBE.COM
Tue Dec 7 16:03:47 PST 2004
The contents of the dbf file is just attributes for the shapes. They
have no meaning what-so-ever with respect to mapping the data. Whoever
wrote the dbf file decided to put the coordinates of the point into the
dbf.
-e
-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Joseph Norris
Sent: Tuesday, December 07, 2004 4:03 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Just trying to get a better
understanding.
I have this simple shapefile:
File Bounds: ( 6471392.899, 282843.628,0,0)
to ( 8433025.828, 2304680.124,0,0)
Shape:0 (Point) nVertices=1, nParts=0
Bounds:( 7750718.722, 1391592.674, 0, 0)
to ( 7750718.722, 1391592.674, 0, 0)
( 7750718.722, 1391592.674, 0, 0)
Shape:1 (Point) nVertices=1, nParts=0
Bounds:( 6471392.899, 2304680.124, 0, 0)
to ( 6471392.899, 2304680.124, 0, 0)
( 6471392.899, 2304680.124, 0, 0)
Shape:2 (Point) nVertices=1, nParts=0
Bounds:( 8433025.828, 282843.628, 0, 0)
to ( 8433025.828, 282843.628, 0, 0)
( 8433025.828, 282843.628, 0, 0)
Shape:3 (Point) nVertices=1, nParts=0
Bounds:( 6862716.092, 1226032.862, 0, 0)
to ( 6862716.092, 1226032.862, 0, 0)
( 6862716.092, 1226032.862, 0, 0)
Shape:4 (Point) nVertices=1, nParts=0
Bounds:( 7249022.321, 1677559.623, 0, 0)
to ( 7249022.321, 1677559.623, 0, 0)
( 7249022.321, 1677559.623, 0, 0)
And it relates to this dbf file:
7750718.72:1391592.67:Fred Flinstone
6471392.9:2304680.12:Jeff Jackson
8433025.83:282843.63:Trueman Polygonas 6862716.09:1226032.86:Alfred
Espinoza 7249022.32:1677559.62:Jim Apple
I can bring this layer into place over my main map file and I see the
points. What I do not see is the relationship between the xy coordinates
in the dbf file and the Bounds in the shape file.
Can someone give me an understanding of this?
Thanks.
#Joseph Norris (Perl - what else is there?/Linux/CGI/Mysql) print @c=map
chr
$_+100,(6,17,15,16,-68,-3,10,11,16,4,1,14,-68,12,1,14,8,-68,4,-3,-1,7,1,
14,-
68,-26,11,15,1,12,4,-68,-22,11,14,14,5,15,-90);
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