<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Thanks a lot Gerardo, I will follow your suggestion once I have access to it (I can not get your attachment here at my Job).</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent;"><span>I used Google Maps just to obtain the geographics coordinates by right click of the mouse and selecting "What's here?". This gives me, in the search area, the coordinates in the form, e.g., 25.562265,-106.713869. I could do it in Google Earth too, but the pointer is a "hand" that is quite coarse to select a fine point.<br></span></div><div style="color: rgb(0, 0, 0);
font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Regards</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Gregorio</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">De:</span></b> Gerardo
Jimenez <gejst5@hotmail.com><br> <b><span style="font-weight: bold;">Para:</span></b> "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org> <br> <b><span style="font-weight: bold;">Enviado:</span></b> Lunes, 11 de marzo, 2013 7:55:59<br> <b><span style="font-weight: bold;">Asunto:</span></b> Re: [Qgis-user] Raster image is georeferenced to UTM projection. Doubt about CRS.<br> </font> </div> <br><meta http-equiv="x-dns-prefetch-control" content="off"><div id="yiv65019168">
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<div><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="yiv65019168SkyDrivePlaceholder"></div><hr id="yiv65019168stopSpelling">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="yiv65019168ecxgmail_quote">2013/3/10 Gregorio Inda <span dir="ltr"><<a rel="nofollow" ymailto="mailto:gregorio_inda@yahoo.com.mx" target="_blank" href="mailto:gregorio_inda@yahoo.com.mx">gregorio_inda@yahoo.com.mx</a>></span><br><blockquote class="yiv65019168ecxgmail_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>
</div><table style="" align="center" border="0" cellpadding="0" cellspacing="2" width="100%">
<tbody><tr>
<td>
<div style="text-indent:0px;">QGIS version</div></td>
<td>
<div style="text-indent:0px;">1.8.0-Lisboa</div></td>
<td>
<div style="text-indent:0px;">QGIS code revision</div></td>
<td>
<div style="text-indent:0px;">exported</div></td></tr>
<tr>
<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>
<tr>
<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>
<tr>
<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>
<tr>
<td>
<div style="text-indent:0px;">SpatiaLite Version</div></td>
<td>
<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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