Hi Steve,
Firstly apologies for my delayed response - I have been on holiday!
I have had the same problem here with a load of raster maps and in my case
found the easiest solution was for the user to have access to the image
styles tool to lighten the images as required. However, this may not apply
to your situation.
The mapinfo .tab file DOES seem to record the image style - open the .tab up
in a text editor and look for this:
RasterStyle 1 52
RasterStyle 2 51
RasterStyle 3 1
These values vary according to the style setting you chose - surprisingly,
this seems to be saved to the .tab without you being prompted. Unfortunately
I think you are right though, I can not think of any 'quick fix' to edit
this value - other than to write some mapbasic to open each table in turn
and change the image style and save the table with a different name, or some
Visual Basic to manually edit the .tab file and save it with a different
name.
You could do a find and replace on the .tab file in a text editor, but this
still means doing this 84 times...
Good luck!
Pete, Ordnance Survey, UK
-----Original Message-----
From: Steve Halsall [mailto:[EMAIL PROTECTED]]
Sent: 10 August 1999 13:48
To: '[EMAIL PROTECTED]'
Subject: MI colour/greyscale raster
Hi
I am using the UK Ordnance Survey 1:50,000 raster mapping (tif format) with
their Boundary Line product. The tif map tiles are in colour which is great
for when I want to view an area. However I am mainly interested in the
boundaries (from Boundary Line) and just need the raster mapping for
reference. For printing purposes I change the raster image to greyscale and
change the contrast and brightness to about 70% using the Adjust Image Style
option in Mapinfo. This produces the output that I want but unfo
unately it appears to make this change to the raster map rather than in the
MapInfo table or the Workspace. This causes problems as the next time I open
the raster map it may not be in the format that I require.
The only solution I have come up with is to copy the raster tiles (84 of
them!) and rename them, then I will have to rename the relevant MapInfo
registration tables (and edit them to point to the correct raster file). I
can then use both sets of raster maps within MapInfo switching them off and
on as required.
Before I go ahead I would like to ask list members if they have found an
easier way?
Steve Halsall
LGBCW
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
***************************************************************
* This email/attachment(s) has been virus checked at OS *
* and is free of all known viruses.
*
* All non work related emails/attachments should be deleted
* to comply with 'Internet code of practice'
* as per office notice 524/98.
*
***************************************************************
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
