turtles in pattern and avoid two turtles/one patch problem

[rbsoc...@gmail.com]

I need to set 10 turtles in two horizontal/parallel rows.  My code so far is:

set xcor -4 + random 8

set ycor one-of [-2 2]

Also want to avoid two turtles on same patch.  So inserted:

move-to one-of patches with [not any? turtles-here]

But the above command blows up the row structure.  How can I alter/replace this command so the turtle stays on the ycor but moves on the xcor if it encounters another turtle on the same patch?

Thanks, RB

[Michael Tamillow]

What happens if there are 10 turtles on one patch? Or if there is a turtle between 4 patches and all patches are covered by turtles already.

This sounds like a problem where you are reallocating turtles, and I don't think it is as easy as just saying "get off my patch". Have you ever played musical chairs? Where is the open seat? It might be all the way on the other side...

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[rbsoc...@gmail.com]

Let me try to clarify because this answer does not connect with my question.  I want two rows with 0-10 turtles in each row.  Their y position is fixed at -2 or 2.  Their x position is random between -4 and 4 with only one turtle per patch.

RB

[James Steiner]

You can  identify the patches, and create the turtles directly. 

Ask patches with [ abs pxcor = 2 and abs pycor <= 4 ]

[ sprout-turtles 1 

   [ ….

    ]

]

 

If you want only some of the patches to have a turtle, you can use the N-OF function to select a specific number of patches, or you can add 

And random 100 < whatever

To the WITH so that only some of the patches make turtles. 

~~James

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[James Steiner]

Your “move-to” would have worked, if you had not included ALL the patches, you need to tell NetLogo exactly what to do. It did not know that you meant the turtles should move to only a few of the patches. 

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[rbsoc...@gmail.com]

Thanks JS.  Will try new sprout approach or rescue the old move-to strategy.

RB