How can i get BNG XYs from a survey

Question

I want to get British National Grid values rather than Lat Longs or other formats

I've chosen a GB basemap and changed the Coordinate format to UTM/UPS and have been advised that I should change the map settings in the Settings tab in Connect, but I don't get a map settings option anywhere

I have created the form in Connect in version 3.24.30

I have used the calculation pulldata("@geopoint",${location},"x"), but it doesn't bring back BNG
I can't find anywhere to set the EPSG:27700

Any ideas?

ChrisDickinson · Answer

Hi Laura

Did you manage to get out a solution to this? When I follow the link posted by abureaux I just get the generic feature layer ESRI web page.

Thanks

Chris Dickinson

GIS Officer

North Yorkshire Council

abureaux · Answer

Quoting IsmaelChivite from here.

Hi. By default, all feature services created by Survey123 store geometries in Geographic Coordinate System WGS 84 (4236). However, by using the submission_url setting in your XLSForm, you can have your survey point to a custom feature service in a different spatial reference.

As you know, the Survey123 field app works always in WGS84 Geographic Coordinates and the basemaps must be in Web Mercator Auxiliary Sphere. It is not possible to define datum transformations when you use a custom feature service.  For the best control I would recommend to have data coming from Survey123 stored in WGS84 and then project the data using ArcGIS Desktop to your local projection.  If you decide to use a custom feature service with a spatial reference different than the default, be aware that as of Survey123 version 1.8, you can only use submission_url to work with feature services published to ArcGIS Online or to an ArcGIS for Server designated as the Hosted Server of your Portal for ArcGIS.

I hope this clarifies your question. You may want to post Survey123 questions in the Survey123 GeoNet Group.