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Derived from the 2 ft contours acquired as part of the Los Angeles Regional Imagery Acquisition Consortium (LAR-IAC4) in 2016. |
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Derived from the 2 ft contours acquired as part of the Los Angeles Regional Imagery Acquisition Consortium (LAR-IAC4) in 2016. |
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LAR-IAC, Pictometry International Corp |
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5000 |
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[] |
| description:
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<DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">Contours derived from the 2016 LAR-IAC4 program. The Digital Elevation Model was acquired using LiDAR (Light Detection And Ranging), which used a laser mounted in planes that were acquiring 4-inch orthophotography data. Hundreds of millions of ground measurements were made using this system, which makes it extremely accurate. This source was used for urban/suburban areas of the County in mainland (approximately 4,107 square miles) and Catalina Island covering approximately 107 square miles, while for the National Forest contours were created using stereo compilation.</SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">This dataset meets or exceeds ASPRS (American Society for Photogrammetry and Remote Sensing) 1:100 scale mapping. Accuracy is within +/- 2 feet of true location with 95% confidence.</SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">Detailed product information is contained in the </SPAN><A href="http://egis3.lacounty.gov/dataportal/wp-content/uploads/2013/07/LARIAC4-Product-Guide-1.pdf"><SPAN STYLE="font-size:10pt">LAR-IAC Product Guide</SPAN></A><SPAN STYLE="font-size:10pt">.</SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">We highly recommend that you visit the </SPAN><A href="http://egis3.lacounty.gov/dataportal/lariac/"><SPAN STYLE="font-size:10pt">LAR-IAC Project Website </SPAN></A><SPAN STYLE="font-size:10pt">to find a rich source of information about the data and the LAR-IAC program. The site includes project documents, full FGDC compliant metadata, data downloads of related GIS used to complete the project, sub-licensing information, sample imagery and data, and information about the 2014-2016 acquisition.</SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">GIS Data showing flight-date information is available from the LAR-IAC Project website site, and elsewhere in the </SPAN><A href="http://gis.lacounty.gov/dataportal"><SPAN STYLE="font-size:10pt">LA County GIS Data Portal.</SPAN></A></P><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:10pt">The imagery is held under license from Pictometry International Corp, and cannot be publicly released. Government entities are eligible to join the LAR-IAC program to access the data. Private entities may contact Pictometry directly to purchase selected parts of the data.</SPAN></P><DIV><P><SPAN /></P></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN STYLE="font-size:9pt">LAR-IAC members only. There will be a public version available through the US Geological Survey</SPAN></P><DIV><DIV><P><SPAN /></P></DIV></DIV></DIV> |
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| title:
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eGIS_Elevation.EGIS.LARIAC_CONTOURS_50FT_L4 |
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| tags:
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["LiDAR","Elevation","Los Angeles County","California"] |
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en-US |
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150000000 |
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