I am using MI 6.0 and experiencing a problem in determining the bounding rectangle for 
a file.

My file is a raster image: it is a TIFF file, 6.49x8.27 in, 300 dpi, 1948x2480 pixels; 
its TAB file is displayed hereunder:

!table
!version 300
!charset WindowsLatin1
Definition Table
File "075.tif"
Type "RASTER"
(253000, 146000) (0, 0) Label "Pt 1",
(269500, 146000) (1948, 0) Label "Pt 2",
(253000, 125000) (0, 2480) Label "Pt 3",
(269500, 125000) (1948, 2480) Label "Pt 4"
CoordSys Earth Projection 19, 110, "m", 4.3569397222, 90, 49.8333333333, 
51.1666666667, 150000.01256, 5400088.4378000004
Units "m"

(the coordinate system is Belgian Lambert 72)
 
The bounding rectangle, as returned from TableInfo is very inaccurate, to say the 
least: it is off by about 400 m each; hereafter how I checked:

Open Table "n075.TAB" Interactive
Map From n075
set coordsys table n075
print tableinfo(0,20) returns 252593.43 (I was expecting 253000)
print tableinfo(0,21) ... 124652.82 (... 125000)
print tableinfo(0,22) ... 269974.33 (... 269500)
print tableinfo(0,23) ... 146347.18 (...146000)

Any explanation for this ?

Background: this is what is used for creating a seamless table

Pierre Henrotay
Siemens Information and Communications
Siemens Business Services s.a./n.v.
DER
Rue de N�verl�e 11
B5020 Namur (Rhisnes)
Belgium
Tel. ++ 32 81 559 687
Fax ++ 32 81 559 658
Mobile ++ 32 477 69 93 19
mailto:[EMAIL PROTECTED]
http://www.siemens.be/ic




_______________________________________________________________________
List hosting provided by Directions Magazine | www.directionsmag.com |
To unsubscribe, send e-mail to [EMAIL PROTECTED] and
put "unsubscribe MapInfo-L" in the message body.

Reply via email to