I have 354 distinct points (as a shapefile) that are very close together i.e. 2-3 points have the same lat but different long or vice versa as the sampling was done in a very small area and the field conditions were difficult.

I have imported this points shapefile as a new vector and have checked the attributes to see if the points have distinct lat & long (together). I have then exported the vector layer into roi and then exported the roi into an ASCII sampling the RGB bands.

Ultimately, I get 354 points having duplicate lat long and there are only 37 distinct points, instead of 354. Are the points too close to be treating each point as a distinct roi?

If yes, then how do I extract the spectral values at these points. (Exporting to Arcmap and sampling is not an option)