areaorder

areaorder

Within each area ordinal numbers to cells in ascending order

Result = areaorder(expression, areaclass)

expression

spatial scalar, ordinal

areaclass

spatial boolean, nominal, ordinal

Result

spatial scalar

Operation

Let n be the number of non missing value cells on expression for a specific value of areaclass. These cell values are set in order and numbered on Result in ascending order: the cell with the smallest value on expression is assigned a 1 and the cell with the largest value is assigned a number n. Cells on expression with identical values are assigned consecutive, unique numbers; the order in which these cells are numbered is arbitrarily chosen.

Notes

A cell with missing value on expression or areaclass is not considered in the order operation; it is assigned a missing value on Result.

Group

This operation belongs to the group of Order

Examples

1. • pcrcalc

   binding

   Result = Result.map;

   Expr = Expr.map;

   AreaClass = AreaClass.map;

   initial

   report Result = areaorder(

   Expr,

   AreaClass) ;

   
   

   • python

   Expr = readmap(“Expr.map”)

   AreaClass = readmap(“AreaClass.map”)

   Result = areaorder(

   Expr,

   AreaClass)

   Result.map	Expr.map	AreaClass.map