QGIS/resources/function_help/json/clamp

{
  "name": "clamp",
  "type": "function",
  "description": "Restricts an input value to a specified range.",
  "arguments": [ {"arg":"minimum","description":"the smallest value <i>input</i> is allowed to take."},
                 {"arg":"input","description":"a value which will be restricted to the range specified by <i>minimum</i> and <i>maximum</i>"},
                 {"arg":"maximum","description":"the largest value <i>input</i> is allowed to take"}],
  "examples": [ { "expression":"clamp(1,5,10)", "returns":"5", "note":"<i>input</i> is between 1 and 10 so is returned unchanged"},
                { "expression":"clamp(1,0,10)", "returns":"1", "note":"<i>input</i> is less than minimum value of 1, so function returns 1"},
                { "expression":"clamp(1,11,10)", "returns":"10", "note":"<i>input</i> is greater than maximum value of 10, so function returns 10"}]
}