### uphill
uphill4

#### uphill patch-variable
uphill4 patch-variable

Moves the turtle to the neighboring patch with the highest value for patch-variable. If no neighboring patch has a higher value than the current patch, the turtle stays put. If there are multiple patches with the same highest value, the turtle picks one randomly. Non-numeric values are ignored.

uphill considers the eight neighboring patches; uphill4 only considers the four neighbors.

Equivalent to the following code (assumes variable values are numeric):

    move-to patch-here  ;; go to patch center
    let p max-one-of neighbors [patch-variable]  ;; or neighbors4
    if [patch-variable] of p > patch-variable [
      face p
      move-to p
    ]

Note that the turtle always ends up on a patch center and has a heading that is a multiple of 45 (uphill) or 90 (uphill4).

See also downhill, downhill4.

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