nodirection

Expression of directional data type

```
Result = nodirection(expression)
```

- expression
- spatial, non spatial directional
- Result
- dimension of expression boolean

The expression cell values represent directions, with values equal to 0 or between 0 and 360 (or 2 *pi* if the global option `--radians` is set). A cell with no direction (a flat area) has a value -1. Result is a Boolean expression where 1 is TRUE for cells with no direction and 0 is FALSE for cells with a direction.

Each cell without a direction on expression is assigned a 1 (Boolean TRUE) on Result. Cells that have a direction on expression are assigned a 0 (Boolean FALSE) on Result.

This operation belongs to the group of Missing value creation

- • pcrcalcbindingResult = Result.map;Expr = Expr.map;initialreport Result = nodirection(Expr);• pythonExpr = readmap(“Expr.map”)Result = nodirection(Expr)
Result.map Expr.map