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Hi Micha, <br>
you are a champ. Thanks heaps that works really well. <br>
I had a few issues with v.in.lines as there was a line created after
the protocol but it wasn't. I think the file wasn't read properly. <br>
It worked when I used the command with the in=- option and copying
the x y coordinates in the Terminal. <br>
Thanks again. <br>
<br>
Cheers,<br>
Harald<br>
<br>
<br>
<br>
<br>
<br>
On 17/04/12 21:42 , Micha Silver wrote:
<blockquote cite="mid:4F8D5727.5020103@arava.co.il" type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<style>body p { margin-bottom: 0cm; margin-top: 0pt; } </style> On
04/17/2012 02:13 PM, G. Allegri wrote:
<blockquote
cite="mid:CAB4g1=wRJhNGA-y9DmA90c14evZ318aXdXZeSTu83+LXqySP5A@mail.gmail.com"
type="cite">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="direction:ltr" bgcolor="#FFFFFF" text="#660000">Now
run v.distance as:<br>
v.distance from=gps_point to=river_line upload=to_along
column=along out=connectors <br>
# The output parameter hold the line segments connecting
each point to the river_line. It's required by the module
to run, by has no significance for you. <br>
</div>
</blockquote>
<div><br>
</div>
<div>I have never tested the to_along upload type, but what is
considered the "to" nearest point in this case? I mean, you
will have the original points located on the endpoints of
the line, isn't the nearest point the endpoint itself?</div>
<div><br>
</div>
</div>
</blockquote>
<br>
IIUC, v.distance finds the distance along the line from each point
to the *vertex* on the line closest to that point. <br>
But in this particular case, since we're creating the line from
the same input points, the line vertices and the points are all
the same, so I think it shouldn't matter. The distance from the
points to the nearest vertex will always be 0, and 'to_along'
should give the distance along the line to that vertex=point.<br>
<br>
If I'm wrong, someone on the list with more experience will jump
up...<br>
<br>
<br>
<blockquote
cite="mid:CAB4g1=wRJhNGA-y9DmA90c14evZ318aXdXZeSTu83+LXqySP5A@mail.gmail.com"
type="cite">
<div class="gmail_quote">
<div>giovanni</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="direction:ltr" bgcolor="#FFFFFF" text="#660000">
<br>
Cheers,<br>
Micha
<div class="im"><br>
<blockquote type="cite"> <br>
Help would be really appreciated. And I am sorry if
that has been asked before but I couldn't find a
thread dealing with that. <br>
<br>
Best regards, <br>
Harald <br>
<br>
<br>
</blockquote>
<p><br>
</p>
<br>
</div>
<span class="HOEnZb"><font color="#888888">
<pre cols="72">--
Micha Silver
052-3665918
</pre>
</font></span></div>
<br>
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</blockquote>
<p><br>
</p>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
------------------------------
Harald Hofmann
Research Fellow PhD - Hydrogeology
School of Geosciences
Monash University
Wellington Road
Clayton, Victoria 3800
Australia</pre>
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