=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):
=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
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:
WKID: 3452 Authority: EPSG Projection:
Lambert_Conformal_Conic False_Easting: 3280833.333333333
Standard_Parallel_2: 30.7 L
Linear Unit: Foot_US (0.3048006096012192)
Thanks for your kind response. I am at a loss and have been trying to solve this problems for 3 days now.
Any suggestions would be appreciated.
Here is list of the steps that I used to generate the last two screen shorts:
-1- add data in a new MXD by attaching the csv file posted on the community board.
-2- right lick on file and then select display X Y data.
-3- enter values as shown on the screen shot below:
-4- press OK and then OK to the pop up box.
-5- The event shape file is created with points indicated with red circles:
-6- open the project (data management tool)
-7- Select YES to the Active X pop up box as shown below:
8. Enter the values on the project (data management) dialog box as shown below:
-9- The XY coords for the South La State Plane shape file (shown as black X’s) matches the XY coords for the UTM N15 event (shown as red circles):
-10- The Layer properties - Source Tab for the South LA state plane shape file has these values:
Data Type: Shapefile Feature Class
Geometry Type: Point
Coordinates have Z values: Yes
Coordinates have measures: Yes
Projected Coordinate System: NAD_1983_StatePlane_Louisiana_South_FIPS_1702_Feet
Linear Unit: Foot_US
Geographic Coordinate System: GCS_North_American_1983
Prime Meridian: Greenwich
Angular Unit: Degree
-11- Add the South LA State Plane point shape file first (black X) and then a South LA State Plane roadway shape file (red blob) inside the City of Lafayette to a new MXD:
The first image shows the pointer values in the lower right hand corner of the center of the roadway blob as 3108889.3, 603705.75 feet:
The second image shows the pointer values in the lower right hand corner of the center of the black X blob as 12424607.457,-7966754.92 feet.