<br><font size=2 face="sans-serif">You may also want to get the "projections_and_datums"
file</font>
<br>
<br><font size=2 face="sans-serif"> ftp://ftp.dep.state.fl.us/pub/gis/data/projections_and_datums.zip</font>
<br>
<br><font size=2 face="sans-serif">from DEP. This shapefile has the State
of Florida re-projected into the following projections and datums:</font>
<br>
<br><font size=2 face="sans-serif">Albers NAD27</font>
<br><font size=2 face="sans-serif">Albers HPGN</font>
<br><font size=2 face="sans-serif">State Plane North NAD27</font>
<br><font size=2 face="sans-serif">State Plane North NAD83</font>
<br><font size=2 face="sans-serif">State Plane East NAD27</font>
<br><font size=2 face="sans-serif">State Plane East NAD83</font>
<br><font size=2 face="sans-serif">State Plane West NAD27</font>
<br><font size=2 face="sans-serif">State Plane West NAD83</font>
<br><font size=2 face="sans-serif">UTM 16 NAD27</font>
<br><font size=2 face="sans-serif">UTM 16 NAD83</font>
<br><font size=2 face="sans-serif">UTM 17 NAD27</font>
<br><font size=2 face="sans-serif">UTM 17 NAD83</font>
<br>
<br><font size=2 face="sans-serif">Display this along with your "unknown"
layer and find where your layer matches up with one of the state boundaries
in the shapefile. Then you've got the projection info for you layer.</font>
<br>
<br><font size=2 face="sans-serif"><br>
Lance Peterson<br>
Peterson Consulting / FL Dept. of Transportation<br>
Business Systems Support Office<br>
Office of Information Systems<br>
Phone: 850-410-5545<br>
</font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>"Tripp Corbin"
<tcorbin@keckwood.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: shrug-l-bounces@lists.dep.state.fl.us</font>
<p><font size=1 face="sans-serif">03/26/2007 03:02 PM</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif"><Chris.OGara@dot.state.fl.us>,
<shrug-l@lists.dep.state.fl.us></font>
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<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">RE: shrug-l: Shapefiles which do not
auto correct</font></table>
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<br>
<br><font size=2><tt>Chris,<br>
First, if the data is in NAD 27 and a prj file does not exist, you need<br>
to create one in ArcCatalog in order to reproject it to UTM 17. You use<br>
the Define projection tool in ArcToolbox to do that. Of course you will<br>
need to know more than just the datum. You will need to know the<br>
coordinate system as well. Is it state plane, UTM, or something else? If<br>
in doubt, open ArcMap and set the data frame to the projection you<br>
believe the shapefile to be in. Then add your UTM 17 road data. If they<br>
match up then good. If not try again with a different projection. This<br>
is why I stress to students to learn the normal values for the most<br>
commonly used projections in your area. It will allow you to easily pick<br>
out what coordinate system was used to create the data even if there is<br>
no prj file. <br>
<br>
Once you have gotten the shapefile to match as close as you can, then<br>
you will use the spatial adjust toolbar. This toolbar allows you to<br>
transform and rubber sheet vector data. In 9.1 and earlier this included<br>
shapefiles, feature classes and CAD data. In 9.2, it does not include<br>
CAD. <br>
<br>
Tripp Corbin, MCP, CFM, GISP<br>
Associate Vice President, GIS/Mapping<br>
ESRI Authorized Instructor<br>
Keck & Wood, Inc.<br>
www.keckwood.com<br>
(678) 417-4013<br>
(678) 417-8785 fax<br>
<br>
Keck & Wood, Inc offers instructor led and virtual training for ESRI's<br>
ArcGIS & ArcView software.<br>
Please visit www.keckwood.com for more information including a schedule<br>
of upcoming classes.<br>
<br>
<br>
-----Original Message-----<br>
From: shrug-l-bounces@lists.dep.state.fl.us<br>
[mailto:shrug-l-bounces@lists.dep.state.fl.us] On Behalf Of<br>
Chris.OGara@dot.state.fl.us<br>
Sent: Monday, March 26, 2007 2:54 PM<br>
To: shrug-l@lists.dep.state.fl.us<br>
Subject: shrug-l: Shapefiles which do not auto correct<br>
<br>
<br>
Good Afternoon:<br>
<br>
I am attempting to bring in shapefiles from a Utility Company that will<br>
not auto correct. My roadway system is projected in UTM 17 and the<br>
shapefiles do not have a projection. I called the provider of the files<br>
and they stated they were in a NAD 27 projection. I took this<br>
information and used the Discovering a Projection process and the files<br>
are closer but not close enough to call it done. The shape files
are<br>
still in the Atlantic somewhere.<br>
<br>
my question is can you Georeference (GR) shapefiles?<br>
In the literature I have it speaks to GR of images not shapefiles What<br>
is the process of GR shapefiles?<br>
<br>
Would you suggest using a WorldFile?<br>
Will a World File work on shapefiles?<br>
I know this works for CAD file what about shapefiles?<br>
<br>
<br>
<br>
Thank You for your time and efforts<br>
Christopher P. O'Gara<br>
District Utility Coordinator<br>
Florida Department of Transportation<br>
Roadway Design / Utilities Office<br>
1109 South Marion Avenue, MS 2024<br>
Lake City, Fl 32025-5874<br>
TEL: (386) 961-7708<br>
FAX: (386) 758-3736<br>
chris.ogara@dot.state.fl.us<br>
<br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
SHRUG-L mailing list<br>
SHRUG-L@lists.dep.state.fl.us<br>
http://lists.dep.state.fl.us/mailman/listinfo/shrug-l<br>
</tt></font>
<br>