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NetLogo 1.1 User Manual
;; all turtles with xcor greater than 20 die
See also: ct
diffuse
diffuse patch−variable number
Tells each patch to share (number * 100) percent of the value of patch−variable with its eight
neighboring patches. number should be between 0 and 1.
Note that this is an observer command only, even though you might expect it to be a patch
command. (The reason is that it acts on all the patches at once −− patch commands act on
individual patches.)
diffuse chemical 0.5
;; each patch diffuses 50% of its variable
;; chemical to its neighboring 8 patches. Thus,
;; each patch gets 1/8 of 50% of the chemical
;; from each neighboring patch.)
diffuse4
diffuse4 patch−variable number
Like diffuse, but only diffuses to the four neighboring patches (to the north, south, east, and west),
not to the diagonal neighbors.
diffuse4 chemical 0.5
;; each patch diffuses 50% of its variable
;; chemical to its neighboring 4 patches. Thus,
;; each patch gets 1/4 of 50% of the chemical
;; from each neighboring patch.)
display
display
Resumes updating of the graphics window (which may have been turned off using the no−display
command). Any changes in the state of the graphics window that were made while no−display was
in effect will immediately be drawn on−screen all at once.
See also no−display.
Primitives Dictionary
105