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At 05:11 PM 11/14/2002 -0800, you wrote:<br><br>
<blockquote type=cite class=cite cite><font face="arial" size=2>So my
datum is Nad83, I would need another tool to convert this to Lat/Lon
WGS84?</font></blockquote><br>
NAD83 and WGS84 are basically the same, so you are in luck.<br><br>
Rich<br>
<blockquote type=cite class=cite cite>
<dl>
<dd>----- Original Message -----
<dd>From:</b> <a href="mailto:Rich@GreenwoodMap.com">Richard
Greenwood</a>
<dd>To:</b> <a href="mailto:wayne@keyholecorp.com">Wayne Thai</a>
<dd>Cc:</b>
<a href="mailto:GRASSLIST@baylor.edu">GRASSLIST@baylor.edu</a>
<dd>Sent:</b> Thursday, November 14, 2002 4:35 PM
<dd>Subject:</b> Re: [GRASSLIST:4953] Mosaicking and reprojecting<br><br>
<dd>I am sure other members of this list can answer your question better than I, but usually create an indexed color tiff before importing it onto GRASS. The GIMP does a very nice job of this. If you a bringing in more than one TIFF, be sure you use the same palette for all the images.<br><br>
<dd>Once you get all your images into GRASS, use the r.patch command to mosaic them together.<br><br>
<dd>To reproject them, use r.proj. Your state plane coordinate system should be on the same datum as your lat/lon when you use r.proj because while r.proj does a great job of reprojecting, it does not handle datum transformations.<br><br>
<dd>Rich<br><br>
<dd>At 04:15 PM 11/14/2002 -0800, you wrote:<br><br>
<blockquote type=cite class=cite cite><font face="arial" size=2>
<dd>Hi All,</font>
<dd> <font face="arial" size=2>
<dd>I'm a new user to GRASS and I installed it yesterday, and did the tutorial with the spearhead sample data online. Anyhow, now that I have some sort of idea of what I'm doing, I'm running into some trouble. I have a bunch of data, and I would like to make a mosaic of it, then reproject it into LAT/LON. The current projection is State Plane. Here is what I've done so far.</font>
<dd> <font face="arial" size=2>
<dd>I have imported the .tif files (with the .tfw) into GRASS, and it separates it into the RGB bands. So what I did was, I used the d.rgb command to display the image, but the colors come out all weird, how do I make it display the real colors. I have also tried using r.in.gdal but when I display that, it comes out black and white. I have also tried r.composite and it also displays weird colors (like a flash back to the 80's with neon colors and all)</font></blockquote><br><br>
<dd>Richard W. Greenwood, PLS
<dd>Greenwood Mapping, Inc.
<dd>Rich@GreenwoodMap.com
<dd>(307) 733-0203
<dd><a href="http://www.greenwoodmap.com/" eudora="autourl">http://www.GreenwoodMap.com</a> </blockquote>
<x-sigsep><p></x-sigsep>
</dl>Richard W. Greenwood, PLS<br>
(307) 733-0203<br>
Rich@GreenwoodMap.com<br>
<a href="http://www.greenwoodmap.com/" eudora="autourl">www.GreenwoodMap.com</a></html>