Rich Shepard wrote > The LiDAR data files do not have the same extent as the vector files, and > they should. I think I incorrectly imported them. > > There are two flavors of the files: ESRI Grid and Shapefiles. > > I used the Grid files, specifying hdr.adf as the file to use. But, > since > the .prj file is specified when importing a shapefile I wonder if that's > what I need with the Grid format. The metadata.xml has these bounds: > > > <westbc Sync="TRUE"> > -123.253402 > </westbc> > <eastbcSync="TRUE">-123.131197 > </eastbc> > <northbcSync="TRUE">45.002688 > </northbc> > <southbcSync="TRUE">44.925436 > </southbc> > and > > <leftbc Sync="TRUE"> > 600316.500000 > </leftbc> > <rightbcSync="TRUE">631069.500000 > </rightbc> > <bottombcSync="TRUE">1169386.500000 > </bottombc> > > <topbc Sync="TRUE"> > 1196554.500000 > </topbc> > Looks like both long/lat and Oregon State Plane coordinates are > provided. > > The prj.adf file contains: > Projection LAMBERT > Datum HPGN > Spheroid GRS80 > Units 3.280839895013123 > Zunits NO > Xshift 0.0 > Yshift 0.0 > Parameters > 43 0 0.0 /* 1st standard parallel > 45 30 0.0 /* 2nd standard parallel > -120 30 0.0 /* central meridian > 41 45 0.0 /* latitude of projection's origin > 400000.0 /* false easting (meters) > 0.0 /* false northing (meters) > > The Shapefile for the area including my project has this projection: > > PROJCS["Lambert Conformal Conic", GEOGCS["GCS North American 1983 > HARN",DATUM["D North American 1983 HARN",SPHEROID["GRS > 1980",6378137.0,298.257222101]], > PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]], > PROJECTION["Lambert Conformal Conic"], > PARAMETER["False Easting",1312335.958005249], > PARAMETER["False Northing",0.0], > PARAMETER["Central Meridian",-120.5], > PARAMETER["Standard Parallel 1",43.0], > PARAMETER["Standard Parallel 2",45.5], > PARAMETER["Latitude Of Origin",41.75], > UNIT["Foot",0.3048]] > > Should I put these source files in the WGS84-lat-long location, the > Oregon-ll83 location, or the project location which is the Oregon State > Plane projection? And, do I import the Grid or shapefile? I'm confused. > > TIA, > > Rich > > > > _______________________________________________ > grass-user mailing list
> [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user >And, do I import the Grid or shapefile? It depends which data you need : - Shape file: vector data - Esri Grid: raster data so these data may be/are different. a common workflow I do with data in different projections: - Defiine a projection in which you want to do your analysisi(1)s - Reproject data in different projections than (1) either by gdalwarp'ed/ogr2ogr or by v.proj/r.proj to this srs/projection In this way data projection mixing can be avoided. ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Importing-ESRI-Grid-file-or-Shapefile-tp5285121p5285124.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
