Hi Steve, Pete and others!
As somebody might have mentioned, you can have several .TAB files using the
same .TIF file. This means you can have a number of different raster setups
with almost no additional load on your precious hard drives.
So in this case I think you would want to go with two .TAB files for each
.TIF - one for viewing, one for printing.
Then, if you are fortunate enough to still have the original .TAB files
WITHOUT any Rasterstyle clause, you can quickly add the appropriate clause
in a DOS prompt using the statement
echo Rasterstyle 1 52 >> myfile.tab
This will add the text "Rasterstyle 1 52" (without quotes) to the end of the
file.
*note: In the above statement, insert the correct rasterstyle (you should be
able to read it in an "adjusted" .TAB) instead of 1 52, and insert the
correct filename instead of myfile.tab.
To show an example:
Let's assume, that you have raster images consisting of pairs like this:
image1.tif image1.tab
image2.tif image2.tab
image3.tif image3.tab
When viewed in Mapinfo they display in (unadjusted) colours. When the .TAB
files are viewed in a text editor, they do NOT contain a Rasterstyle clause.
Make a file named copy.bat containing the text
copy image1.tab bwimage1.tab
copy image2.tab bwimage2.tab
copy image3.tab bwimage3.tab
and place it in the same directory as the .TAB files.
Run copy.bat
Open the file bwimage1.tab in Mapinfo, and adjust it to the grayscale
display you need for printing. Close the file.
Open the file bwimage1.tab in a text editor, and note the Rasterstyle clause
at the end. For this example we'll asume it's 1 52.
Make a file named add.bat containing the text
echo Rasterstyle 1 52 >> bwimage2.tab
echo Rasterstyle 1 52 >> bwimage3.tab
and place it in the same directory as the .TAB files.
*note: Leave out bwimage1.tab, you already adjusted it manually.
Run add.bat
....and that _should_ be it! I'm writing this from memory, so I might have
slipped somewhere, but I _have_ used this approach, and it works!
HTH.
Peter
Peter Ketting, GIS consultant
Ministry for Environment and Energy
Denmark
> ----------
> Fra: Thake, Peter[SMTP:[EMAIL PROTECTED]]
> Sendt: 16. august 1999 16:23
> Til: 'Steve Halsall'
> Cc: 'Mapinfo-L'
> Emne: RE: MI colour/greyscale raster
>
> 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]
>
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
