OK, as I've not got anywhere with this, is there a way to ignore the coordinates in a survex 3D file, and instead fix a survey station to a point where I define the position and coordinate system in my therion file, and associate a station in my Survex 3d file with that point? The problem I have is that I am using existing survex .3d files where all the coordinates are in UTM30 European 1979 Datum. This is not the same as the more common WGS84 Datum. So I cannot set the coordinate system for my .3d file directly.<br>
<br>You can hopefully see what I am trying to do here:<br><br>survey LosHoyos<br> <br> #fix 1.0 41.234567 -3.21012 213<br><br> import 0072.3d -surveys use #-cs EPSG:32230<br><br>endsurvey<br><br>I am importing an existing survey centreline from the .3d file. I cannot assign this a coordinate system directly as Therion does not support the coordinate system I need.<br>
So instead I define the point 1.0 as fixed using the WGS84 Lat Long which I have. Now I want to attach the stations imported from the .3d file to the fixed point to correctly position the cave.<br><br>Footleg<br><br><br><div class="gmail_quote">
On 26 March 2011 13:40, Footleg <span dir="ltr"><<a href="mailto:drfootleg@gmail.com">drfootleg@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
That appears to be the ED50 Datum. I need the EUR79 datum of everything is a few hundred metres out of position.<br><font color="#888888"><br>Footleg</font><div><div></div><div class="h5"><br><br><div class="gmail_quote">
On 26 March 2011 12:43, Graham Mullan <span dir="ltr"><<a href="mailto:graham.mullan@coly.org.uk" target="_blank">graham.mullan@coly.org.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">For Spain, try using EPSG 23030 for your cs<br>
<br>
see <a href="http://spatialreference.org/ref/epsg/23030/" target="_blank">http://spatialreference.org/ref/epsg/23030/</a><br>
<br>
Graham<br>
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0117 9502556 or 07887 637064 (or 0844 2327803)<br>
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On 26/03/2011 11:00, <a href="mailto:therion-request@speleo.sk" target="_blank">therion-request@speleo.sk</a> wrote:<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
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1. Support for UTM European 1979 Datum (Footleg)<br>
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Message: 1<br>
Date: Fri, 25 Mar 2011 14:13:54 +0000<br>
From: Footleg<<a href="mailto:drfootleg@gmail.com" target="_blank">drfootleg@gmail.com</a>><br>
Subject: [Therion] Support for UTM European 1979 Datum<br>
To: List for Therion users<<a href="mailto:therion@speleo.sk" target="_blank">therion@speleo.sk</a>><br>
Message-ID:<br>
<<a href="mailto:AANLkTinKkQdQt5dgdGcma_9ratem5n%2BWHMxn9Yw2WwOH@mail.gmail.com" target="_blank">AANLkTinKkQdQt5dgdGcma_9ratem5n+WHMxn9Yw2WwOH@mail.gmail.com</a>><br>
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<br>
I'm making good progress now on learning how to generate various output from<br>
Therion, and have started on generating KML plan maps for google earth. My<br>
problem is that my survey data is coming from survex .3d files which I am<br>
importing. I am working with data for many hundreds of caves, and they are<br>
all fixed using UTM with the European 1979 Datum because that is the<br>
coordinate system of the expedition area maps we have had for the past few<br>
decades. As far as I can tell, this datum is not included in Therion at the<br>
moment. I've checked the epsg file in the source. I specifically need the<br>
UTM30N zone as all our caves using this coordinate system are in that zone.<br>
Is this something which can be added please?<br>
<br>
Footleg<br>
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