<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 10pt;
font-family:Verdana
}
--></style>
</head>
<body class='hmmessage'>
Hi Rich,<br><br>I have a general theory that may help you:<br><br>Assumptions:<br>-Very well defined LOCATION parameters is the foundation to perfectly combine maps of different sources.<br>-The experience tells me that some data are even in the correct reference system, but sometimes the "info" that comes with it sometimes not.<br>-Each coutry has it's adequated reference system.<br>-GIS and GPS comes with a lot of reference systems, but they follow an international standard.<br>-Those standards sometimes differ a little from the "real parameters".<br><br>What I do:<br>-I always take control of my LOCATIONS by <span id="result_box" class="short_text"><span style="background-color: rgb(255, 255, 255);" title="metodicamente">methodically</span></span> defining all the parameters with proj.4 sentences before starting a job.<br>-Some location is a "<span id="result_box" class="short_text"><span style="background-color: rgb(255, 255, 255);" title="receptaculo">receptacle</span></span>" for data.<br>-One location is for the work.<br><br><br><br>Pablo Torres Carreira
<br><br><br><br>> Date: Tue, 24 Nov 2009 11:53:22 -0800<br>> From: rshepard@appl-ecosys.com<br>> To: grass-users@lists.osgeo.org<br>> Subject: Re: [GRASS-user] Reprojecting Vector Map<br>> CC: <br>> <br>> On Tue, 24 Nov 2009, Rich Shepard wrote:<br>> <br>> > True. I completely forgot about this. With a new location/mapset I can<br>> > now use v.proj to move it over.<br>> <br>> I'm still missing something. Defined a new location (streetsLCC) and<br>> mapset (rbs). Ran the following command successfully:<br>> <br>> GRASS 6.4.0svn (streetsLCC):/usr4/grassbase > v.proj input=streets<br>> location=streets mapset=rbs output=streets --verbose<br>> <br>> 'g.region -p' still shows lat/long after specifying 'g.region<br>> vect=streets<br>> <br>> GRASS 6.4.0svn (streetsLCC):/usr4/grassbase > g.region vect=streets <br>> GRASS 6.4.0svn (streetsLCC):/usr4/grassbase > g.region -p<br>> projection: 99 (Lambert Conformal Conic)<br>> zone: 0<br>> datum: nad83<br>> ellipsoid: grs80<br>> north: 45.46163298<br>> south: 44.88493498<br>> west: -122.868113<br>> east: -121.651714<br>> nsres: 0.576698<br>> ewres: 1.216399<br>> rows: 1<br>> cols: 1<br>> cells: 1<br>> <br>> So I've not reprojected from LL to LCC at all.<br>> <br>> Rich<br>> _______________________________________________<br>> grass-user mailing list<br>> grass-user@lists.osgeo.org<br>> http://lists.osgeo.org/mailman/listinfo/grass-user<br> <br /><hr />Chegou o Windows 7: Incrivelmente simples! <a href='http://www.microsoft.com/brasil/windows7/default.html?WT.mc_id=1539' target='_new'>Clique e conheça.</a></body>
</html>