Help Transforming and Projecting Coordinate Systems Please

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06-01-2017 01:27 PM
KennethCargill
New Contributor

Hello,

I am trying to transform my coordinates so that my map layers match. I am using the World Imagery Esiri Base map which has WGS 1984 Coordinate System and my data is defined in State Plane 1001 Georgia East. I am trying to get the points to line up in Savannah, but they currently reside in the Atlantic Ocean. I exported my data from an Excel Table using Eastings and Northings.

Thank you so much.

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8 Replies
forestknutsen1
MVP Regular Contributor

There are a lot of ways to address this. One approach is to open a blank mxd. Then right-click on the data frame ("layers") and open the data frame properties. On the coordinate tab select your state plane zone. Then add your table and display xy data. You can add your imagery to the mxd at this time (if you want the map to be in your state plane zone) and it should reproject fine. It will probably ask you for a transformation. I think NAD83 and WGS84 are very close in that part of the country so, it could be ignored (depending on what you are trying to accomplish). I don't know the right transformation off the top of my head for Georgia.

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KennethCargill
New Contributor

Hi Forest,

Thank you for your tip, but it only helped a little. I am trying to get the points on a piece of land in Savannah. I tried your method and it got me to this picture. Thank you for trying. I really appreciate it.

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JayantaPoddar
MVP Esteemed Contributor

Could you attach  a sample data in excel sheet?



Think Location
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KennethCargill
New Contributor
UTM83Z11_EUTM83Z11_N
1002520.79765899.92
1002585.48765914.34
1002937.69765991.27
1003237.35765763.5
1003379.1766153.68
1003667.42766249.87
1003717.18766115.08
1003766.94765976.76
1004113.34766394.33
1004448.86766516.02
1004493.24766429.58
1004791.66766630.66
1005174.89766764.22

The first column is Eastings and the second is Northings

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JayantaPoddar
MVP Esteemed Contributor

Thanks!!!

The Projection "NAD_1983_StatePlane_Georgia_East_FIPS_1001_Feet" puts the points near Savannah.

I added the Basemap first followed by the Point layer.



Think Location
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AbdullahAnter
Regular Contributor II

If the datum are different between the layers and base map , there is must be shift , even if changing data frame coordinate system.

so if you want to put your layer above ESRI base map you should Project your layers to match base map coordinate system.

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KennethCargill
New Contributor

Thank you so much! This worked perfectly!

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MelitaKennedy
Esri Notable Contributor

Weird! If I use the Esri World Topographic base map, these coordinates are onshore, and far enough onshore that it doesn't look like a NAD83-WGS84 difference (no more than approx. 6 feet, and I think less in Georgia). They're also onshore if I use the Esri Imagery basemap, which looks a little different from yours.

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