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Thanks to all for your helpful answers and nice advices ! The while function is definitely what I needed. Best regards, Gwenna?l Le 20/03/2014 19:56, Boris Steipe a ?crit : > This is really a question of programming logic...

Dear all, I can't find a solution for the following problem: When I first intersect a line with 2 polygons (splitting it into 2 segments) and then use an overlay to get for each segment the attribute of the...

# Dear all, # I simulate individual paths in a landscape (let's say coordinates in x and y range # from -100 to 100 both) and would like to replace each individual going outside the # landscape by a new simulation... until none...

Thank you very much for your quick answers! The %% operator seems the easiest way to go; it works perfectly. Best regards, Gwenna?l Le 28/01/2016 20:39, William Dunlap a ?crit : > In addition to the other fine answers...

Thank you very much for your answers! rgeos::gRelate(Inter[1], PolyD, byid = TRUE) # From what I undestand of the "Dimensionally Extended nine-Intersection Model" ( https://en.wikipedia.org/wiki/DE-9IM ), # It looks like the green segment is in...

Dear all, I'd like to calculate the angle from one point (origin) to another (target), whatever their coordinates. But I encounter some problems (detailed below). The problem could be solved if one of you could answer positively to one...

Dear Petr, Thank you for your answer. This will probably save me three lines of script, which is appreciable. Unfortunately, this does not solve my main issue, that is: If my condition is not fulfilled (some points are outside the...