Thanks to all who responded. Below are cut-n-pastes of suggestions.
No shortage of people willing to tell you where to go & what to try when you get
there!!
Thanks again
Gerald Kornelsen
-----------------------------------
Francois Bergeron <[EMAIL PROTECTED]>
Fran�ois Trudeau ([EMAIL PROTECTED]) put exactly the same question
as you last week in MapInfo-L. I recommend to you to contact him because it will have
certainly a solution for you.
You can "Search" too in MapInfo-L about twf files.
-----------------------------------
Jason Adam <[EMAIL PROTECTED]>
Try this application...it's a free download.
<<GEOREG.MBX>> see att'd
-----------------------------------
Michael Goldberg <[EMAIL PROTECTED]> and
Try the MapBasic tool TFWRead. I've included it below
-----------------------------------
Marc Pelosse <[EMAIL PROTECTED]>
You can get the TFW read utility, that will convert from TFW to .tab.
http://www.directionsmag.com/tools/Default.asp?a=file&ID=48
-----------------------------------
Mats Elfstr�m <[EMAIL PROTECTED]>
Consult
http://www.esri.com/usersupport/support/faq/arcview/01general/404_750.html
for the definition of the world file format.
Then apply what you have learned and edit a image .tab file accordingly.
-----------------------------------
Mike Lepage <[EMAIL PROTECTED]>
you need to register the image, but you can get programs to do this for you. worldreg
is a program I use. there is a free version and is on the
directionsmag site. another utility is tfwreed
-----------------------------------
Tony Cooley <[EMAIL PROTECTED]>
You may wish to check out WorldReg Version 4.0. The program offers batch processing
of Tiff/Tfw files, supports all coordinate systems in the MapInfo projection file, and
numerous other georeference formats. Additional functions allow for the conversion of
raster coordinate systems and the ability to save a Map Window as a registered TAB
file image.
More details can be found at URL:
http://members.aol.com/mapdata/
>From there you can download a freeware version. This freeware version is
limited to single file processing, supports only Tiff/tfw and only UTM
coordinate systems.
-----------------------------------
Chuck Lockwood ([EMAIL PROTECTED])
If you have version 4.5 or greater you should have a tool called "Georeg."
Georeg will convert the ArcInfo file (TFW) into a shape that MapInfo can use. (.TAB).
Sometimes, due to bizarre methods employed by "Arcolytes" this program will not work.
If that is true with your pictures you can use a handy bit of Map Basic Code to do the
job.
Let me know if Georeg works for you. If not, will send custom MBX. Will need to know
what coordinate system was used to create the TFW and what Coordinate System you want
the photos in.
-----------------------------------
Matthew Bagley ([EMAIL PROTECTED])
There is actually a method that is much easier and doesn't require any additional
software.
The TFW (world file) contains only 6 lines of information
pixel x size = a
rotation (always 0)
skew (always 0)
pixel y size (negative number unless in the southern hemisphere) = b
upper left x co-ordinate = c
upper left y co-ordinate = d
Knowing these details and the projection of the raster it is very easy to register
this in mapinfo:
1) Open the raster and select "Register"
2) Select proper coordinate system and units
3) Select any point and fill in the following values
Map x: c
Map y: d
Image x: 0
Image y: 0
4) Select a new point and fill in the following values
Map x: c + a
Map y: d
Image x: 1
Image y: 0
5) Select a new point and fill in the following values
Map x: c + a
Map y: d + b
Image x: 1
Image y: 1
6) Select a new point and fill in the following values
Map x: c
Map y: d + b
Image x: 0
Image y: 1
7) Click "OK" and you are done!
-----------------------------------
GEOREG.MBX
TFWREAD.MBX
