# cf.Coordinate.positive

`Coordinate.``positive`

  The positive CF property.

  The direction of positive (i.e., the direction in which the coordinate values are increasing), whether up or down, cannot in all cases be inferred from the `units`. The direction of positive is useful for applications displaying the data. The `positive` attribute may have the value `'up'` or `'down'` (case insensitive).

  For example, if ocean depth coordinates encode the depth of the surface as `0` and the depth of 1000 meters as `1000` then the `postive` property will have the value `'down'`.

  Examples: |

      >>> c.positive = 'up'
      >>> c.positive
      'up'
      >>> del c.positive

      >>> c.setprop('positive', 'down')
      >>> c.getprop('positive')
      'down'
      >>> c.delprop('positive')