<div dir="ltr">Hello<div><br></div><div>Thanks for your help, i found a different way. I used the GRASS tool r.grow.distance with the geodesic metric and I got the desired result.</div><div><br></div><div>Regards<br>Dimitris</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Στις Πέμ, 1 Αυγ 2019 στις 4:17 μ.μ., ο/η Richard McDonnell <<a href="mailto:richard.mcdonnell@opw.ie">richard.mcdonnell@opw.ie</a>> έγραψε:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hi Dimitris,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Best tool available is GDAL. You can use this from within QGIS, by going to,
<b>Processing Toolbox</b> and typing in <b>repro </b>select <b>Warp (reproject)</b>, select your
<b>Input layer</b>, set your <b>Source CRS</b> and then select the <b>Target CRS</b>.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">This should be able to do what you want.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hope it helps,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Richard.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"> Dimitris sal <<a href="mailto:jimmaras123@gmail.com" target="_blank">jimmaras123@gmail.com</a>>
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<b>Sent:</b> 01 August 2019 13:32<br>
<b>To:</b> Richard McDonnell <<a href="mailto:richard.mcdonnell@opw.ie" target="_blank">richard.mcdonnell@opw.ie</a>><br>
<b>Cc:</b> <a href="mailto:qgis-user@lists.osgeo.org" target="_blank">qgis-user@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [Qgis-user] Raster analysis , Proximity (raster distance)<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I tried to change the CRS to a meter one , i create a new distance analysis with it and when i try to convert it back to EPSG 4326 the data in the raster was destroyed.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Richard my image is at 700x700 at specific coordinates in degrees. Is there any tool i can use to convert the data from my raster from degrees to meters?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Στις Πέμ, 1 Αυγ 2019 στις 2:41 μ.μ., ο/η Richard McDonnell <<a href="mailto:richard.mcdonnell@opw.ie" target="_blank">richard.mcdonnell@opw.ie</a>> έγραψε:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hi Dimitris,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Welcome!!</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">To answer your question, use the Georeferenced coordinates and run, the distances will be based on
the resolution of your image, so 5m resolution will result in a proximity raster of 5m intervals.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">You might want to set the Maximum distance, as this will help to minimise processing and Image size.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Reagrds,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Richard.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"> Qgis-user
<<a href="mailto:qgis-user-bounces@lists.osgeo.org" target="_blank">qgis-user-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>Dimitris sal<br>
<b>Sent:</b> 01 August 2019 12:13<br>
<b>To:</b> <a href="mailto:qgis-user@lists.osgeo.org" target="_blank">qgis-user@lists.osgeo.org</a><br>
<b>Subject:</b> [Qgis-user] Raster analysis , Proximity (raster distance)</span><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Hello to all , <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">This is my first message here. I am trying to create a proximity map with the Raster analysis tool. My problem is that I only get two options for distance units , pixels coordinates
and georeferenced coordinates while I want to get them in meters.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">I also used the grass tool , r.grow.distance that provides in advanced parameters the option "Output distances in meters instead of map units" If i check this option i get the following
error ERROR: Raster map or group not found.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Does any of you know any workaround for this?<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">I am using QGiS 3.8.1 with GRASS 7.6.1<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Kind regards<u></u><u></u></p>
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<p class="MsoNormal">Dimitris<u></u><u></u></p>
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