<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#CCCCCC" text="#000000">
<div class="moz-cite-prefix">Thanks James,<br>
<br>
I got through the geo-referencing operation and it did generate a
new modified layer based on my .jpg. However the new layer is
badly distorted/stretched, (I used 4 coordinate Garmin GPS
reference points), and it is not in the right location. I can
only find it by zooming to that layer extent. I'm wondering if my
coordinate data from my Garmin is consistent with what the
geo-referencing program uses? My Garmin data is xx.xxxxxx and it
uses negative numbers to represent East instead of West. Or,
might there be an accuracy issue?<br>
<br>
I know my Garmin way-point data is good because it overlays on my
Ortho almost perfectly as a separate layer.<br>
<div class="moz-signature"><br>
Mike K<br>
<br>
</div>
On 2/3/2014 8:28 PM, James Wood wrote:<br>
</div>
<blockquote cite="mid:BLU178-W15D7516A06C5F2F3494CDFBDAA0@phx.gbl"
type="cite">
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style>
<div dir="ltr">Mike,<br>
Here is a good tutorial overview of the georeferencing tool
in QGIS:<br>
<a moz-do-not-send="true"
href="http://qgis.spatialthoughts.com/2012/02/tutorial-georeferencing-topo-sheets.html">http://qgis.spatialthoughts.com/2012/02/tutorial-georeferencing-topo-sheets.html</a><br>
<br>
If the image is not in coordinate space, it will not line up
with your other data. so this operation will be necessary.<br>
<br>
Also, just as a side, I would think that an export from
Powerpoint would degrade image quality (depending on the
original). I would look at and maybe try for future use The Gimp
(which is an open source, free Photoshop-type application). It
will give you more control on export of not only various
output formats but also pixel and color depth, and the like. The
official site is <a moz-do-not-send="true"
href="http://www.gimp.org/">http://www.gimp.org/</a>.<br>
<br>
Best Regards,<br>
James<br>
<br>
<br>
<div>
<hr id="stopSpelling">Date: Mon, 3 Feb 2014 19:59:14 -0500<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:tmike.elhoa@comcast.net">tmike.elhoa@comcast.net</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:tech@wildintellect.com">tech@wildintellect.com</a>; <a class="moz-txt-link-abbreviated" href="mailto:etourigny.dev@gmail.com">etourigny.dev@gmail.com</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a><br>
Subject: Re: [Qgis-user] How do I register a Google Map?<br>
<br>
<div class="ecxmoz-cite-prefix">OK, I installed the Open
Layers plugin and it works very nice but it won't do what I
need, so let me be more specific and see if there might be a
remedy. <br>
<br>
The contour lines that I want were actually obtained using a
hand held Garman GPS. The Garman data was overlaid on the
Google map, (with water depths), special integration, then
that map was exported as a Jpeg, then imported to PowerPoint
where a visual interpolation was done to make the final set
of contour lines for the various lake water depths.<br>
<br>
My desire is the <u>digitize</u> these contour lines as a
set of separate layers. ie 5' deep, 10' deep, etc. There
are many good uses for these layers, but they must be
accurate as to location and size. I don't think I
necessarily need spacial info on the "map"/Jpeg if I can get
the whole map in the right position, and size, so I can do
the digitizing (which would then have the spacial info).
Then I can discard the Jpeg.<br>
<br>
Is it hopeless?<br>
<br>
Mike K<br>
<br>
<br>
<br>
</div>
</div>
</div>
</blockquote>
<br>
</body>
</html>