<div>Hi all,</div>
<div> </div>
<div>May be our friend Yasuo shimada</div>
<div>are suffering for the absence of</div>
<div>binary version newest than 6.2 on linux?<br></div>
<div>regards,</div>
<div> </div>
<div>milton<br></div>
<div class="gmail_quote">2009/5/13 Hamish <span dir="ltr"><<a href="mailto:hamish_b@yahoo.com">hamish_b@yahoo.com</a>></span><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div class="im"><br>sgw00412 wrote:<br>> I tested by two kinds of geographical coordinate systems by<br>> using the same data.<br>><br>> One of the geographical coordinate systems is UTM54, and<br>> the remainder is wgs84.<br>
><br>> data :point vector data (10 points) and a line vector data<br>> OS: grass 6.2.3 on Cygwin.<br>><br>> As a result, the case of UTM54 obtained the distance of meter.<br></div>> On the other hand, wgs84 obtained the distance of decimal value.<br>
<div class="im">><br>> So, I guess that the decimal value of wgs84 is a degree of<br>> latitude longitude.<br>><br>><br>> Grass manual wrote that "...In lat-long locations v.distance gives<br>> distances (dist and to_along) in meters not in degrees calculated as<br>
</div>> geodesic distances on a sphere.."<br>
<div class="im">> <a href="http://www.ces.iisc.ernet.in/grass/grass64/manuals/html64_user/v.distance.html" target="_blank">http://www.ces.iisc.ernet.in/grass/grass64/manuals/html64_user/v.distance.html</a><br>><br>
> Though this manual is version 6.4, the manual of version<br>> 6.2 is not written it.<br>><br>> Is this interpretation correct?<br>><br>> If it is so, please teach me the method of converting the<br>> decimal value into the meter.<br>
<br><br></div>Yes, version 6.2.3 is giving distances in (useless) degree units. This<br>was fixed in Jan 2008 by Martin to use geodesic distance in meters, so<br>GRASS 6.3.0 and the upcoming 6.4 do return meters. But 6.2.3 was<br>
released in Nov 2007 and so is too old to have that fix.<br><font color="#888888"><br><br>Hamish<br></font>
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