Per Michelle White's request, here is a sum of the answers I received on turning off colors in DRG's. Thanks to all who responded!!
Jason McMahan- I think your only option within MI would be to make green Transparent (Table>Raster>Adjust Image Styles>). However, what I usually do is open my DRG (or more precisely, the .tif) into Photoshop (or any imaging software), where you can make all sorts of changes. As long as you don't change the dimensions of the image, or the file name, any changes will be reflected back in MI. Mark Neuhaus- We do it this way in version 6.0. If you have a geotiff without the tfw file, you need to register it first in mapinfo using georeg, which uses the imbedded header info to register it. Then pull the file into paintshoppro and edit the color palette. If you don't register it first, paintshoppro strips the geotiff tags from the header. If it is just a plain old tiff or jpg that you have to register with a tfw reader, you can edit the file first. If you have a geotiff with a tfw file, you can do it either way. But then you can't use georeg. Instead you use a tfw reader. We edit out the green this way. Even change the other base colors if we don't like them. Mostly, we strip the green and then turn each of the other colors to black before making the image into a 2-bit b/w so we can print it transparent in a postscript file. Bill Thoen- I'm pretty sure you can switch colors to gray scale in Table/Raster/Adjust Images Styles, and you can make any one color transparent there too. Stephen R Baig- If Bill's suggestion doesn't work as well as you might like, we have opened the basic DRG in e.g. CorelPaint and therein used either the "suppress" colour mode(s) or the colour separation mode to convert various layers to B/W and re-assembled the layers. That's a two-key operation in PhotoPaint, likely no more complicated in most of the other pixel programmes. As long as the number of pixels isn't changed the positioning info won't "know" about any changes that are made. It does, though, require prepping the images in a second programme and that's not as neat as Bill's suggestion. Brian Van Druten Forestry Technician Alligator River NWR Manteo, NC --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 6129
