Projection Issues (Converting from UTM Zone 44N to Kandawala SriLanka Grid) shifting around 200 meters in the easting

Question

Hi,

I am from Sri Lanka. Northern Sri Lanka is in UTM Zone 44. If the data been collected in UTM Zone 44N and If I (or someone) convert it to Kandawala Sri Lankan Grid (Available in ArcGIS 10.1 as Projected Coordinate Systems -> National Grids -> Asia -> Kandawala Sri Lanka Grid) there seems to be shifting around 200 meters on the east. However if I use DNR GPS software from DNRGPS Application: Minnesota DNR load the shape file  then if I set (from the DNR GPS) the file -> Set Projections -> Datum as Kandawala and Projection as Sri Lankan Grid only few meter difference which is acceptable. I have verfied this with 2 Garmin GPS one set to UTM Zone 44n and other set to Sri Lankan Grid . I shall be thankful if I can sort out the issue in ArcGIS.

DonOpgenorth · Answer

I've moved your post into the GIS Mapping Data  space. GeoNet Help is intended for discussion on the community help and feedback. I have also added in a few additional tags. You can see more on the community structure, and what topics are under each space from the
following documents:

GeoNet Community Structure

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Thanks!

Don

NeilAyres · Answer

Rangunathan,

exactly,

you have to chose the correct transformation.

If this is has answered your problem, please mark the post as such.

N

RegunathanUmapathy · Answer

Dear Neil Ayres,

Many thanks for the reply. You may have a look at the original gpx via https://onedrive.live.com/embed?cid=45B0A8A523ED0470&resid=45B0A8A523ED0470%21585&authkey=ADgKMvA2w_SXcvU file from the garmin etrex10 GPS (with GLONASS enabled)  that can easily open dnr gps and save as a a arcgis shaefile from there.

I set the data frame properties to Kandawala Sri Lankan Grid

I have added the layer which was set at UTM Zone 44n with WGS 84datum. 
When I added it gave Grographic Coordinate System Warning which is given below

I have clicked the Transformation

If I simply click Convert from GCS_WGS_1984 to GCS_Kandawla and click ok results around 200m shifting in the east as I mentioned via a screenshot above. However if I choose using (choices are sorted by suitability for the layer's extent) using geocentric transoformation geocentric transformation it works and the answer is quite close.