Data News Thursday, May 14, 2009

LIDAR QA/QC Reports Are Available
Each LIDAR panel belongs to one of fifty-five task areas that cover the land areas of the state of Louisiana. Each task area has a review file and an appendix file which should be used as a reference for any Quality Assurance/Quality Control (QA/QC) questions regarding the LIDAR data. These files are now available for downloading through the LIDAR downloader. For each individual LIDAR tile, the downloader will display a link for downloading the corresponding task area's QA/QC reports along with the links for downloading the contours, breaklines, DEM, and points for that tile. To go to the LIDAR Downloader, click here.

LIDAR Coverage is Complete
The remaining outstanding LIDAR panels have now been added to Atlas! This last addition of panels covers Claiborne, Franklin, Madison, Morehouse, Richland, Tensas, Union, and West Carroll Parishes plus provides some missing panels for Catahoula, Concordia, Jackson, Lincoln, and Winn Parishes. To go to the LIDAR Downloader, click here.

LIDAR Panels Quartered Yet Again
Deliveries of the LIDAR data to Atlas have traditionally been in quarter quadrangle (3.75-minutes latitude by 3.75-minutes longitude) format. A number of the panels in this last delivery were further subdivided into quarter-quarter quadrangles (1.875-minutes latitude by 1.875-minutes longitude) due to increased point density. In order to continue to use the same name and index as the previous LIDAR panels, all four quarters of this latest subdivision are grouped together into one Winzip archive. In other words, there are now four files that cover the normal 3.75-minute quarter quadrangle, and all four files are packaged together into the same Winzip file.

More LIDAR Available for Northern Louisiana
Another 153 panels of LIDAR data is now available for downloading. The newly added panels cover portions of Catahoula, Concordia, Franklin, Jackson, Tensas, and Winn Parishes. To go to the LIDAR Downloader, click here.

LAGIS 2007 DVD Data Added to "Search Atlas"
The geospatial data layers of the LA GIS 2007 DVDs have been added to Atlas! Though "Search Atlas", a user can download any of the vector and raster data layers provided by the 2 DVD set. Searches through the "Search Atlas" page will include the data from the LAGIS2007 DVDs. By clicking "Attribute Only" and setting the collection to "LAGIS2007", a user can list those datasets specific to the DVD collection. To see the FAQ for the collection, click here.To go to the "Search Atlas" page of Atlas, click here.

More LIDAR Available
Another 238 panels of LIDAR data is now available for downloading. Some of the newly added panels complete the coverage of Caldwell, De Soto, La Salle, and Sabine Parishes. The remainder of these panels cover portions of Claiborne, Grant, Richland, Union, and Winn Parishes. To go to the LIDAR Downloader, click here.

Holes in LIDAR Coverage Filled
Over twenty panels of LIDAR have been added to fill several "holes" in the existing LIDAR coverage fo the state. These panels include panels for the Cheniere Au Tigre, Duralde, Monroe North, and Simpson South 1:24,000 quadrangles. To go to the LIDAR Downloader, click here
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