topic Re: Conversion from long and lat to XY in ArcGIS Analyse Questions

Conversion from long and lat to XY

BayarmagnaiMunkhjargal — Mon, 23 Feb 2015 23:51:26 GMT

Anyone know how to convert coordinates from UTM Zone 18N NAD 1983 to Lat/long NAD1983?

Re: Conversion from long and lat to XY

JustinJohnson2 — Tue, 24 Feb 2015 00:05:45 GMT

If you need to convert a small number of points, you can use the tools on the US National Geodetic Survey site:

http://www.ngs.noaa.gov/cgi-bin/utm_getgp.prl

There is also a link to download an *.exe file that you can run locally, but it looks like it's an ancient application. I suspect there is a more modern way to do it, possibly involving the GDAL gdaltransform utility

GDAL: gdaltransform

If you have the locations in a point feature class, you could reproject the feature class to Lat/Lon and then recalculate the geometry values in the attribute table using the new coordinate system.

Re: Conversion from long and lat to XY

BayarmagnaiMunkhjargal — Tue, 24 Feb 2015 00:46:46 GMT

Hi Justin

Thanks bunch. I put my question in reverse. Sorry for that.

I wanna see the extent of difference in geocoding results performed by

ArcGis and Texas A&M Geocoding Services.

I have 500 geocoded addresses using Texas A&M Geocoding Services in

Latitude/Longitude NAD1983. Now I want to convert it to

(UTM_1983_Zone_18N). So that I can calculate the distance between two UTMs

using excel. Second geocoded addresses in (UTM_1983_Zone_18N) was created

with ArcGis 10.2.

Maggie