Hi,
I am a new user fo Jess and try to get some understanding for the engine.
I cant understand why the code below does not work.
(deffacts graph-links3
(link3 (gnode3 0 0) (gnode3 2 1))
)
Here, I am trying to describe links of nodes with 2 coordinates.
How should I do that?
I also tried this version:
(deftemplate gnode (slot x) (slot y))
(deftemplate link (slot start) (slot end))
(deffacts graph-links
(link (start (gnode (x 0) (y 0))) (end (gnode (x 2) (y 1))))
(link (start (gnode (x 2) (y 1))) (end (gnode (x 1) (y 2))))
(link (start (gnode (x 2) (y 1))) (end (gnode (x 2) (y 0))))
(link (start (gnode (x 2) (y 0))) (end (gnode (x 1) (y 1))))
(link (start (gnode (x 1) (y 1))) (end (gnode (x 0) (y 2))))
(link (start (gnode (x 0) (y 2))) (end (gnode (x 2) (y 3))))
(link (start (gnode (x 1) (y 2))) (end (gnode (x 1) (y 3))))
)
I am always geetıng the error message:
Jess reported an error in routine Funcall.execute
while executing (gnode3 0 0)
while executing assert from deffacts MAIN::graph-links3
while executing (reset).
Message: Undefined function gnode3.
or
Jess reported an error in routine Funcall.execute
while executing (gnode (x 0) (y 0))
while executing assert from deffacts MAIN::graph-links
while executing (reset).
Message: Undefined function gnode.
Some little help would save me from confusion.
I hope this message will be accepted by the mailing list, because I am not
sure if my messages are delivered successfully.
Thanks,
Levent
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