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Extract coordinates for first and last vertex of a geotrace

DanielDery

I am trying to extract the coordinates of the first and last vertices of a geotrace (mode=vertex).

I think that the best solution is to use a custom Javascript function but I was not able to get it working. I did not find enough documentation on how to handle geotrace geometry in javascript for Survey123 Connect.

Does someone know how to create such a function? Is there a work around?

type	name	label	calculation
geotrace	transect	Transect
decimal	UTM_X_start	UTM_X_start	pulldata("@javascript","get_coordinates.js","getCoordinates_X_start",${transect})
decimal	UTM_Y_start	UTM_Y_start	pulldata("@javascript","get_coordinates.js","getCoordinates_Y_start",${transect})
decimal	UTM_X_end	UTM_X_end	pulldata("@javascript","get_coordinates.js","getCoordinates_X_end",${transect})
decimal	UTM_Y_end	UTM_Y_end	pulldata("@javascript","get_coordinates.js","getCoordinates_Y_end",${transect})

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