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Thanks Vaclav
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<div class="">Michael<br class="">
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____________________</div>
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<font face="Helvetica" size="3" class="">C. Michael Barton</font></div>
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<font face="Helvetica" size="3" class="">Director, Center for Social Dynamics & Complexity </font></div>
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<font face="Helvetica" size="3" class="">Professor of Anthropology, School of Human Evolution & Social Change</font></div>
<div class=""><font face="Helvetica" size="3" class="">Head, Graduate Faculty in Complex Adaptive Systems Science</font></div>
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<font face="Helvetica" size="3" class="">Arizona State University</font></div>
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<font face="Helvetica" size="3" class=""><font class="">voice: </font><font class="">480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)</font><br class="">
<font class="">fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)</font><br class="">
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<font face="Helvetica" size="3" class="">www: <a href="http://www.public.asu.edu/~cmbarton" class="">
http://www.public.asu.edu/~cmbarton</a>, <a href="http://csdc.asu.edu" class="">http://csdc.asu.edu</a></font></div>
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<div class="">On Jan 29, 2015, at 8:53 AM, Vaclav Petras <<a href="mailto:wenzeslaus@gmail.com" class="">wenzeslaus@gmail.com</a>> wrote:</div>
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<div class="">On the topic of descriptions. I left there what I had there the first time because I had no time to revise it yesterday.<br class="">
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Location = project was there for a long time already but I'm not saying that it is good. However, there should be some suggestions, how to use GISDBASE, Location and Mapset. Otherwise, it is the same as saying nothing. The goal of the descriptions is to teach
people and for this you need examples.<br class="">
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<div class="">Michael's notes (just so you don't have to dig through the thread):<br class="">
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### GISDBASE<br class="">
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">"A GRASS GIS database directory contains one or more Locations” </div>
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">(no need to say that you can have more than one GISDBASE)</div>
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### Location<br class="">
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">"All GIS data in a Location directory are in the same coordinate reference system (projection). Locations contain Mapsets.”</div>
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">OR</div>
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">"All GIS data in a Location directory are in the same spatial projection. Locations contain one or more Mapsets.”</div>
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<div style="margin:0px" class="">(Locations are not necessarily related to ‘projects’. Mine are very much projection based—e.g., I have a single latlon Location for ALL my latlon data regardless of which research project it is used for. Do we need to say “coordinate
reference system (projection)”? Doesn’t just “projection” cover it well enough? These are directories, so it might help to say this.)</div>
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<div style="margin:0px" class="">### Mapset<br class="">
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<div style="margin:0px;font-size:12px;font-family:Helvetica" class="">"A Mapset contains GIS data. Every Location automatically has one Mapset named PERMANENT that also contains projection information for the Location."</div>
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<div class="">(A Mapset may or may not relate to one task; that depends on the user. Some of mine do and some don’t. The ‘common data’ in PERMANENT is not really important except in a multi-user setup, which is not what most people use today. Mapsets are directories
too, but as someone mentioned, maybe we shouldn’t stress this in case someone tries to move stuff around in a mapset. On the other hand, and unlike Arc, entire Locations and entire Mapsets CAN be moved without any harm).</div>
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