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Hi Ben
<BR>
The first steps are the hardest for sure. I think that using someone elses data is the best and spearfish is there for using. Understanding what the "database" is was the stumbling block for me. Its just the full path to the data -- for me thats /home/David/grassdata, then having untarred spearfish there, I use spearfish as the location.
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But there were some long sessions getting that clear in my mind.
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best wishes
<BR>
David
<BR>
<BR>
On Thu, 2003-01-30 at 02:26, Ben Logan wrote:
<BLOCKQUOTE>
<PRE><FONT COLOR="#737373"><FONT SIZE="3"><I>Hello, everyone.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>I have been thinking about writing an introductory tutorial for GRASS</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>that would lead a total newbie to the point where I am...which isn't</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>all that far along, but it's a start. :-) The tutorial would have a</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>very specific end (similar to the GRASS Seeds tutorial) as opposed to</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>being a general introduction.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Here's my problem:</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Let's say I haven't created a GRASS database yet. I have some maps</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>that I want to create a location for. (The maps could be DEMs in UTM</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>projection or might be shapefiles in a lat/lon projection.) Since I</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>don't have a database setup yet, I can't run the GRASS commands to get</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>information from the map data. How do I come up with all of that</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>information necessary to creating a database? Of particular interest</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>to me is the choice of an ellipsoid. Back when I first set my GRASS</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>database up, I read somewhere that I should use the wgs84 ellipsoid.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>I can't remember where I read that, and maybe it's incorrect. How do</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>you know which to use, and what happens if you use the wrong one?</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>I'd really appreciate any help understanding this.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Ben</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>-- </FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Ben Logan</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Google Answers Researcher</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>answers.google.com</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>When you're searching for information, Google Answers.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I>Harriet's Dining Observation:</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I> In every restaurant, the hardness of the butter pats</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I> increases in direct proportion to the softness of the bread.</FONT></FONT></I>
<FONT COLOR="#737373"><FONT SIZE="3"><I></FONT></FONT></I></PRE>
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<PRE>--
David Hine
29 Pacific Pde
Mission Beach, Qld 4852
Tel/Fax: (07) 4088 6146
Sustainable Agriculture
Productivity
System Resilience
Maintenance of Assets, natural and man-made
Equity for Producers
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