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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#244061'>I’ve found that Google Earth is wildly different based on the area you choose. They have New York city tied down pretty well. That may be good if Sweet Pea [the no-too-smart manatee] still goes to see the statue of liberty each year. It’s clearly not as detailed in suburban areas and most of Florida. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#244061'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#244061'>I may be equating higher detail with precision with no way to measure it, but I assume if the aerial photo source shows much better detail then precision matches it. It is beyond my knowledge and expertise be sure this is true. For all I know Google has their own version of a digital “selective availability” type fuzziness added so terrorists will miss the Halliburton Office and get the tea room next door. Maybe the resolution I see using it as a street map is the upper limit. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#244061'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> shrug-l-bounces@lists.dep.state.fl.us [mailto:shrug-l-bounces@lists.dep.state.fl.us] <b>On Behalf Of </b>Jim Robeson<br><b>Sent:</b> Friday, March 08, 2013 9:31 AM<br><b>To:</b> 'Amy Knight'; shrug-l@lists.dep.state.fl.us<br><b>Subject:</b> RE: shrug-l: Google earth accuracy estimate?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>I would say the accuracy for the location of an endangered species would be acceptable. The problem might be more of individuals who have no or little photo interpretation experience placing a point in an area with little of no ground features to accurately identify their location on the image. As for a number, I don’t have one. A lot might depend on their level of support on Google Earth; are they paying for the upgraded version? <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>There is the old cartographic trick and that is make the point symbol sized proportionally to the confidence in the data accuracy and quality. A point that is 200 feet across covers a lot of sins; the same with a 200 foot wide line. The is the modern day equivalent to using a magic marker of a blue line map. Most never realized that, that line could be a couple hundred feet wide. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>So, sadly I don’t have any numbers on Google Earth. I suspect given the kinds of errors that we all shared, any number might be rather dubious. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:black'>R</span><span style='color:black'>egards,</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:18.0pt;font-family:"ParkAvenue BT";color:#1F497D'>Jim Robeson<o:p></o:p></span></b></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Freestyle Script";color:#1F497D'><o:p> </o:p></span></i></p><p class=MsoNormal><b><span style='color:#1F497D'>James M. Robeson<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:8.0pt;color:#1F497D'>Mapping/GIS Sales, Trimble Certified Trainer <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><img width=264 height=120 id="Picture_x0020_1" src="cid:image001.jpg@01CE1BF0.B9EF1EC0" alt="new logo quarter"></span><span style='font-size:8.0pt;color:#1F497D'> </span><b><span style='font-size:10.0pt;color:#1F497D'> </span></b><span style='font-size:8.0pt;color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><b><i><span style='font-size:8.0pt;font-family:"Arial Black","sans-serif";color:red'><o:p> </o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:12.0pt;color:red'>NOW</span></i></b><b><span style='font-size:12.0pt;color:red'> <i>with the </i></span></b><b><i><span style='font-size:12.0pt;font-family:"Arial Black","sans-serif";color:red'>only</span></i></b><b><span style='font-size:12.0pt;font-family:"Arial Black","sans-serif";color:red'> </span></b><b><span style='font-size:12.0pt;color:red'>Trimble Survey and Mapping Repair Center in Florida!<o:p></o:p></span></b></p><p class=MsoNormal><u><span style='font-size:12.0pt;color:#1F497D'><o:p><span style='text-decoration:none'> </span></o:p></span></u></p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p><div><p class=MsoNormal><b><u><span style='font-size:12.0pt;color:#1F497D'>Tallahassee Office<o:p></o:p></span></u></b></p><p class=MsoNormal><span style='color:#1F497D'>Phone (850) 656-6075 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Cell (850) 212-0030<br>Fax (850) 656-1350<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="mailto:Jim@gpserv.com">mailto:Jim@gpserv.com</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="http://www.gpserv.com/">GPServ.com</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><u><span style='font-size:12.0pt;color:black'>Corporate Office <o:p></o:p></span></u></b></p><p class=MsoNormal><span style='color:#1F497D'>621 Brookhaven Drive</span><span style='font-size:12.0pt;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Orlando, FL 32803-2503<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Phone: (407)601-5816 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Fax: (407)601-5826 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Toll Free: (888)782-1997 <o:p></o:p></span></p></div><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><br clear=all style='page-break-before:always'></span><p class=MsoNormal><span style='color:#1F497D'> <b>Products</b>: </span><b><span style='font-size:8.0pt;color:#1F497D'>Trimble Mapping, Trimble Survey, ESRI, Leica HDS Laser Scanners, LTI, Ricoh, Laser Craft, SECO</span></b><span style='color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:shrug-l-bounces@lists.dep.state.fl.us">shrug-l-bounces@lists.dep.state.fl.us</a> [<a href="mailto:shrug-l-bounces@lists.dep.state.fl.us">mailto:shrug-l-bounces@lists.dep.state.fl.us</a>] <b>On Behalf Of </b>Amy Knight<br><b>Sent:</b> Thursday, March 07, 2013 10:55 AM<br><b>To:</b> <a href="mailto:shrug-l@lists.dep.state.fl.us">shrug-l@lists.dep.state.fl.us</a><br><b>Subject:</b> shrug-l: Google earth accuracy estimate?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi- A year or so there was SHRUG exchange of ‘bad’ google earth examples. Does anyone know of an accuracy estimate for Florida? We receive point location data from many different sources but more and more data are coming in with Google Earth as the source of the location (lat/long). We need to be able to say what locational uncertainty those data have. How ‘off’ could a point be, plotted on Google Earth vs. Florida aerial ortho imagery? Thanks for any information-<o:p></o:p></p><p class=MsoNormal>Amy <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Amy Knight</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>GIS Program Specialist</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Florida Natural Areas Inventory</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Florida State University</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>1018 Thomasville Rd, Suite 200-C</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Tallahassee, FL 32303</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Ph. 850-224-8207 x214</span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;font-family:"Times New Roman","serif";color:#1F497D'> </span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="http://www.fnai.org">www.fnai.org</a></span><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><b><i><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:green'>Science for Conservation</span></i></b><span style='font-size:8.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt'><o:p> </o:p></span></p></div></body></html>