=1= SEEKING INSTRUCTIONS
I want to convert XYZ coordinates in UTM N15 to NAD83 State Plane Coordinates Louisiana South.
I am looking for a set of steps to follow; but any advice will be appreciated.
=2= UNSUCCESSFUL ATTEMPTS
I have displayed XY data to create a shape file successfully in UTM N15
But when I try to convert the file to state plane coordinates, the resulting files does not overlay and match my other state plane files.
=3= DATA FILE
I have attached a CSV file with about 325 points of a much larger (huge!) file with about 3.4 million Lidar points for one quarter of a USGS Quad for there City of Lafayette, Louisiana. The data was downloaded from the Atlas GIS site at Louisiana State University (LSU):
Atlas Lidar Downloader - Louisiana State University
=4= DATA STRUCTURES
The file has 325 points with four fields:
-1- FID: an identification number from 1 to 325
-2- YUTMn15mt: The Y coordinate (Northing) for UTM N15 in meters
-3- XUTMn15mt: The X coordinate (Eastring) for UTM N15 in meters
-4- ZUTMn15ft: The Z coordinate (Elevation ) for UTM N15 in feet.
=4= UTM N15
Here is a quote from the readme file attached to the data:
The points are stored as X,Y,Z values. The X, Y coordinates are UTM zone 15 North meters with a datum of North American Datum 1983. The z value is in feet.
The ArcMap WKID for UTM N15 file is 26915 with these parameters:
NAD_1983_UTM_Zone_15N WKID: 26915
Authority: EPSG Projection:
Transverse_Mercator False_Easting: 500000.0
False_Northing: 0.0
Central_Meridian: -93.0
Scale_Factor: 0.9996
Latitude_Of_Origin: 0.0
Linear Unit: Meter (1.0)
=5= LA SOUTH STATE PLANE NAD83
The ArcMap WKID for Louisiana State Plane South NAD 83 is 3452 with these parameters:
NAD_1983_StatePlane_Louisiana_South_FIPS_1702_Feet
WKID: 3452 Authority: EPSG Projection:
Lambert_Conformal_Conic False_Easting: 3280833.333333333
False_Northing: 0.0
Central_Meridian: -91.33333333333333
Standard_Parallel_1: 29.3
Standard_Parallel_2: 30.7 L
atitude_Of_Origin: 28.5
Linear Unit: Foot_US (0.3048006096012192)
