#N canvas 8 63 924 489 12;
#X obj 462 20 about_fid_abs;
#X obj 25 408 fid_nearest classA classB;
#X obj 22 354 fid_orientation classA classB;
#X obj 24 303 fid_distance classA classB;
#X obj 31 20 cnv 15 330 30 empty empty interactions_between_classes
5 12 0 20 -211601 -66577 0;
#X text 22 96 How to make two classes interact ?;
#X text 18 148 For example \, you may want to know distance between
two objects belonging to two different classes;
#X text 16 276 Distance calculation;
#X text 18 329 Angle orientation calculation;
#X text 18 205 Folowing macros help us for processing neighbourhood
relationsships between instances of one or more classes.;
#X text 20 383 Nearest neighbour;
#X text 247 303 <- see help file;
#X text 247 353 <- see help file;
#X text 247 413 <- see help file;
