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Coordinates Conversion & more

Disclaimer

This application is not suitable for any survey related work. Use it for academic purpose only.

Purposes

Conversion among latitude-longitude, CA State Plane III and CCSF-CS13
gpx file data processing
Coordinates of kml points file data processing
Coordinates of kml file from Leica Zeno-20 points file data processing
Generate AutoCAD command to plot points in a drawing.
Coordinates of ASCII file from Leica Zeno-20 points file for AutoCAD

Example Usage

Collect Mobile phone GPS data points as latitude and longitude.
Convert to State Plane x, y coordinates. Plot in CAD.
Or read gpx file and convert to x, y and plot to CAD.
Example gpx file

Methodology

Uses proj4js library

Options

Paste coordinate pairs (into the input textarea)

Select the source coordinate system
Select the destination coordinate system
Perform translation
Try Mapping output if it is in latlong

To plot the xy points (from the output textarea) to CAD

Press CAD
If the data is latitude and longitude, they need to be swapped.
The commands can directly be pasted into AutoCAD command line.
Optional

Copy the output text
Save as *.lsp file for autolisp
Drag the file to CAD

Delimiters assumed are comma, tab, space, pipe and semicolonChange delimiter (comma, space, |, etc.) for output

Glossary

lat long : latitude and longitude WGS84

xy : California State Plane III US Survey feet

latitude (northings) corresponds to y

longitude (eastings) corresponds to x

CCSF-CS13 : City & County of San Francisco Coordinate System

Example Data

6010664.4	2106045.2
6010099.7	2106437.5
6010001.7	2106431.6
6010085.5	2106003.7
6010075.2	2106201.6
6009514.6	2106172.0

6009488.1	,	2106636.9
6010928.5	,	2106327.3
6010900.9	,	2106834.1
6010341.0	,	2106684.6
6010913.4	,	2106603.8
6010363.0	,	2106220.5
6010089.5	,	2105924.8

37.76319191384049	-122.40739948756455
37.76315485912821	-122.40826321973388
37.76304158301982	-122.41020281801576
+37.76298504515972	-122.411165697598
+37.76331507572365	-122.40552518618118


37.76561805666215,-122.41044831328381
37.76555982448949,-122.41141395071188
37.7642655706079,-122.41128964538521
37.764158368015046,-122.41127719864144
37.76432215991852,-122.41032363644133
37.76429308360789,-122.40837100529708

kml files

Coordinates of points in a kml file can be tabulated and plotted.

mun json files

Coordinates of points in a "munsys json" file can be tabulated and plotted.

{
	"nodes":[
	{"GID":"137203660", "NODE_ID":"266235", "MXASSETNUM":"N-331437", "NODE_STATUS":"ACT", "SYM_NAME":"H_MH_E", "NODE_TYPE":"MH", "RIM":"153.665518", "INVERT":"144.165518", "X":"6000709.65", "Y":"2113609.49"}, 
	{"GID":"107625", "NODE_ID":"85981", "MXASSETNUM":"N-23658", "NODE_STATUS":"ACT", "SYM_NAME":"H_MH_E", "NODE_TYPE":"MH", "RIM":"163.750000", "INVERT":"154.250000", "X":"6000704.23", "Y":"2113447.32"}, 
	{"GID":"103609", "NODE_ID":"14716", "MXASSETNUM":"N-26151", "NODE_STATUS":"ACT", "SYM_NAME":"H_MH_E", "NODE_TYPE":"MH", "RIM":"135.490000", "INVERT":"128.700000", "X":"6001310.29", "Y":"2113462.41"}
	]
}