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<body class='hmmessage'><div dir='ltr'>Hi<br>I usually do what you want to do, but this step seems a little bit odd<div><br><div><span style="font-family: 'times new roman', 'new york', times, serif;">"Now, using Google Maps I selected four specific well and easy referenced points into the image to get geographics coordinates (longitude and latitude)"</span></div><div><font face="times new roman, new york, times, serif"><br></font></div><div><font face="times new roman, new york, times, serif">Check this video, is in Spanish and it shows how to reference using a layer of points and your raster</font></div><div><font face="times new roman, new york, times, serif">Hope it helps</font></div><div><font face="times new roman, new york, times, serif"><br></font></div><div><font face="times new roman, new york, times, serif"><br></font>Gerardo Jiménez Delgado<br>Instituto de Investigaciones Antropológicas<br>Universidad Nacional Autónoma de México<br>Ciudad Universitaria s/n<br>Coyoacan 04510
Mexico City<br>Mexico
56 22 95 16<br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">Date: Sun, 10 Mar 2013 23:27:20 -0600<br>From: padillaraudales@gmail.com<br>To: gregorio_inda@yahoo.com.mx<br>CC: Qgis-user@lists.osgeo.org<br>Subject: Re: [Qgis-user] Raster image is georeferenced to UTM projection. Doubt about CRS.<br><br>WSG 84<br><br><div class="ecxgmail_quote">2013/3/10 Gregorio Inda <span dir="ltr"><<a href="mailto:gregorio_inda@yahoo.com.mx" target="_blank">gregorio_inda@yahoo.com.mx</a>></span><br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;">
<div><div style="font-size:12pt;font-family:times new roman,new york,times,serif;"><div>Hi,</div><div><br></div>I am new user of Qgis, and new on GIS too. I have tried to figure out what is the explanation for what I supposed is something that I am misunderstanding.<br>
<br>Using Google Earth I zoomed into a small region and captured the image using print screen. I supposed that Google Earth CRS was WGS 84 (EPSG:4326) for that small area (a city). Now, using Google Maps I selected four specific well and easy referenced points into the image to get geographics coordinates (longitude and latitude). In Qgis Raster/Georeferencer/Georeferencer I added those points once I first added the PNG raster file in this plugin considering that CRS was WGS 84 (EPSG:4326). I saved the points in file.png.points file. In Transformation Setting of this plugin I left the default values, but I selected Create world file and changed
the Target SRS to WGS 84 / UTM zone 14N (EPSG:32614). Start georeferencing button produced a world file for PNG image.<br><br>In a new Qgis session I opened PNG file (with world file present) and Qgis asked me what CRS I wanted to define. If I select WGS 84 / UTM zone 14N I can see how coordinates are changing when I move the mouse over the image, but that coordinates are geographics (longitude and latitude). If I select just WGS 84 (EPSG:4326) then I can see UTM coordinates changes when I move the mouse over the image. But ¡I expected the opposite!<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">Could someone help me to understand this?</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">Regards</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">
Gregorio</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">
P.S. The CRS of the project is set to WGS 84 / UTM zone 14N (EPSG:32614)</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">Ubuntu 12.04 64bits<br>
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<div style="text-indent:0px;">QGIS version</div></td>
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<div style="text-indent:0px;">1.8.0-Lisboa</div></td>
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<div style="text-indent:0px;">QGIS code revision</div></td>
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<div style="text-indent:0px;">exported</div></td></tr>
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<td>
<div style="text-indent:0px;">Compiled against Qt</div></td>
<td>
<div style="text-indent:0px;">4.8.1</div></td>
<td>
<div style="text-indent:0px;">Running against Qt</div></td>
<td>
<div style="text-indent:0px;">4.8.1</div></td></tr>
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<td>
<div style="text-indent:0px;">Compiled against GDAL/OGR</div></td>
<td>
<div style="text-indent:0px;">1.7.3</div></td>
<td>
<div style="text-indent:0px;">Running against GDAL/OGR</div></td>
<td>
<div style="text-indent:0px;">1.7.3</div></td></tr>
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<td>
<div style="text-indent:0px;">GEOS Version</div></td>
<td>
<div style="text-indent:0px;">3.2.2</div></td>
<td>
<div style="text-indent:0px;">PostgreSQL Client Version</div></td>
<td>
<div style="text-indent:0px;">9.1.4</div></td></tr>
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<td>
<div style="text-indent:0px;">SpatiaLite Version</div></td>
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<div style="text-indent:0px;">3.0.0-beta</div></td>
<td>
<div style="text-indent:0px;">QWT Version</div></td>
<td>
<div style="text-indent:0px;">5.2.2</div></td></tr></tbody></table><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif;">
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