I'm using QGIS 2.8.
I need to calculate the distance between points depending on points ID (not nearest point). I have a CSV table including points ID and coordinates. Each point is referenced on 2 different lines with a different pair of coordinates. I need to know the distance between the 2 positions of each point.
I have tried fTools plugin but the Distance matrix function returns nearest points measures (I had beforehand splitted the CSV table in 2 sets of unique points ID).
Any idea about a plugin or function that would enable to do this?