7.3) Spatial Settings

Now we need to specify the model’s spatial extent: how many patches it has.

Go to the Interface tab, click the Settings button, and change “Location of origin” to Corner and Bottom Left; change the number of columns (max-pxcor) and rows (max-pycor) to 99. Now we have a world, or landscape, of 100 × 100 patches, with patch 0,0 at the lower left corner. Turn off the two world wrap tick boxes, so that our model world has closed boundaries. Click OK to save your changes.

You probably will see that the World display (the “View”) is now extremely large, too big to see all at once. You can fix this:

Click the Settings button again and change “Patch size” to 6 or so, until the View is a nice size. (You can also change patch size by right-clicking on the View to select it, then dragging one of its corners.)