My layer contains the following fields:
"B"
is the identifier of a geometry"B_N"
are the identifiers of the neighboring geometries of"B"
."H"
characterizes"B"
"B_N_H"
characterizes the"B_N"
(s)
How could I do the subtraction of "H"
and "B_N_H"
for each "B_N"
?
For example:
for b = 56, I would like to get in one column "0, 1, 3, 0" and in another column the maximum value 3 and the corresponding "b_n"
identifier 57
for b = 57, I would like to get "0, -3, 0, -1" and the maximum value 3 (absolute value) and the corresponding b_n identifier 56.