Hello,
> I want to build a map (bus accessibility map) and for that I need to identify
> some polygons intersections. To do that I have 2 data.frame: batiments (that
> gives buildings in a city) and arrets_buffer (that gives bus stops (points)
> with a buffer around the point).
>
> I want to have a column giving the intersect binary result (TRUE or FALSE) in
> batiments data.frame. I use st_intersects from sf package.
>
> For that I wanted to perform this loop, but it's not a good idea:
>
> for (i in nrow(arrets_buffer)) {
> batiments$in_recharges <- st_intersects(x = batiments, arrets_buffer[i,],
> sparse = FALSE)
> }
>
> each time i is incremented, batiments$in_recharges is removed with new
> values. So at the end I have results for i=nrow(arrets_buffer) only....
>
> No possibility to add a loop in the loop as the number of lines is quite
> important (the loop will turns a long time..)
>
> Do you have some some idea to help me?
>
> Many thanks for your help
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