Displaying Pimatic-filter variables in a VariablesDevice

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I defined Pimatic-filter devices for some measured weather conditions and display these variables in a VariablesDevice as shown:

{
      "id": "anzeige_wetter",
      "name": "Messwerte Wetter",
      "class": "VariablesDevice",
      "variables": [
        {
          "name": "Temperatur",
          "expression": "$filter-wetter-t.temperature",
          "type": "number",
          "unit": "°C",
          "label": "Temperatur",
          "acronym": "T"
        },
        {
          "name": "Feuchtigkeit",
          "expression": "$filter-wetter-h.humidity",
          "type": "number",
          "label": "Luftfeuchtigkeit",
          "acronym": "H",
          "unit": "%"
        },
        {
          "name": "Helligkeit",
          "expression": "$helligkeit-aussen.helligkeitAussen",
          "type": "number",
          "unit": "%",
          "label": "Helligkeit",
          "acronym": "Li"
        },
        {
          "name": "Luftdruck",
          "expression": "$filter-wetter-p.pressure",
          "unit": "mbar",
          "type": "number",
          "label": "Luftdruck"
        },
        {
          "name": "Vorhersage",
          "expression": "$td25MS.forecast",
          "type": "string",
          "label": "Vorhersage",
          "acronym": " "
        }
      ],
      "xAttributeOptions": [
        {
          "name": "Temperatur",
          "displaySparkline": false
        },
        {
          "name": "Feuchtigkeit",
          "displaySparkline": false
        },
        {
          "name": "Helligkeit",
          "displaySparkline": false
        },
        {
          "name": "Luftdruck",
          "displaySparkline": false
        }
      ]
    },

Humidity and air pressure are displayed with decimals. This is unusal and not necessary.

Is it possible to display these values as rounded integer values?

@StefanG said in Displaying Pimatic-filter variables in a VariablesDevice:

Is it possible to display these values as rounded integer values?

Try the following

"expression": "round($filter-wetter-h.humidity,0)"

For other values like temperatures, you can also use roundToNearest() if you wish to round to quartiles, for example. See also https://forum.pimatic.org/topic/615/output-of-the-ds18b20-sensors/5

@mwittig - Thank you very much for the fast help. It works

BTW where can I find a reference of all these expression functions?

@Heizelmann There is no such reference and you’re invited to contribute to the documentation effort. See https://forum.pimatic.org/topic/2740/pimatic-documentation

A while ago I have started to document the string functions which I’ll add to the Wiki soon. For the time being the page can be found at: https://forum.pimatic.org/topic/2958/string-expressions-and-string-functions-for-variables-rules

@mwittig Thanks, I know about this. When there is no explicit documentation from where do the people fromthe above documentation know about that functions? Can you please point me to the sources. May be I can read and understand the code.

@Heizelmann See here: https://github.com/pimatic/pimatic/blob/master/lib/variables.coffee#L156-L366