Bill,
I suspect that this problem occurs (not only in MapInfo 8.0) because the
session projection is different from the table's projection. To fix this
you have to set the session projection before any transformation:
- If you always use the same projection system the best is to set it in
"Options > Preferences... > Map Window... > Session Projection"
- If you need to set it occasionally then:
1. identify the CoorSys code for the table's projection by typing in the
MapBasic window:
Print TableInfo("myTable",29)
where myTable is the object's table name. This prints the code in the
message window
2. set the session projection by typing in the MapBasic window:
Set "myCoordSys"
where myCoordSys is the output of the previous step
Any transformation that you do to an object when the two projection
systems are different causes this behaviour because the coordinates read
by MapInfo are "wrong". Even if you update a column with an object's
coordinates extracted with ObjectInfo() the coordinates read will be
those for the session projection!
It's very annoying that when you're editing a table the session doesn't
simply default to that table's projection, instead the session
projection defaults to whatever is set in the preferences.
Regards,
Jorge
_________________
Jorge Gil
Simulation Developer
SPACE SYNTAX
-----Original Message-----
From: Data Directions [mailto:[EMAIL PROTECTED]
Sent: 15 September 2005 13:33
To: [email protected]
Subject: MI-L : The Ghost Lines of 8.0
The subject would be a great title for a Halloween query, but
unfortunately I can't wait that long to post, so here goes ... Has
anyone else encountered this "problem or bug" in 8.0?
I digitise a line object from A to B.
I then double click on the line object to open the Line Object Dialog
box.
I then increase the line length by typing in a new value.
When I click OK, the line disappears!
The only way to get it back is to use Edit > Undo Object Change.
Note that If I have a Browser Window open, the record still exists. With
the record selected, if I then do a Map > View Entire Layer for All
Layers, a highlighted "object" occurs about 1000 km away from the
location I digitised. Zooming in on this selected object reveals nothing
...merely a small black square and its circular rotation handle.
I'm sure I was able to do this in previous versions of MapInfo.
Regards,
Bill
---------------------------------------------------------------------
List hosting provided by Directions Magazine | www.directionsmag.com |
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Message number: 17883
---------------------------------------------------------------------
List hosting provided by Directions Magazine | www.directionsmag.com |
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Message number: 17885
