Add precipitation to weather card

[escoand]

I've added the precipitation into the forecast chart.

Pull-request for OpenWeatherMap component: home-assistant/core#13971

[c727]

stupid question: no weather component has data for this in its forecast. so where do you get the data from?

[c727]

please test your stuff before you create a PR

[escoand]

Which came first, chicken or egg? In this case both: home-assistant/core#13971

[c727]

Link the PR in the description please and add screenshots

[escoand]

Thanks for reopening. I've referenced the other way around and this is visible on the website. But you're right, it's not visible ie in the OctoDroid Android App.

[escoand]

Currently there is no unit for the values, but this is a problem for the temperatures as well. The openweathermap precipitation is in mm. Should we at this to the HTML?

[c727]

we have units defined here hass.config.core.unit_system -> length. for metric we use [mm] for precipitation

[c727]

... and imperial uses inch/in.
the conversion (if required) should be done by the backend part

[escoand]

Ok, thanks I'll look into it. But I meant if the unit should be visible.

[escoand]

Backend PR was merged. Maybe we do the unit thing in a second PR.

[c727]

getUnit(measure) {
  if (measure === 'precipitation') {
    return this.getUnit('length') === 'km' ? 'mm' : 'in';
  }
  return this.hass.config.core.unit_system[measure] || '';
}

what about the more-info-card? https://github.com/home-assistant/home-assistant-polymer/blob/master/src/dialogs/more-info/controls/more-info-weather.html

[escoand]

Don't know if every weather provider gives this value as mm/inch or if we get rain probability and therefore should pass the unit together with the data.

[c727]

Then you should check this

[c727]

I solved the merge conflicts in #1221, If we get problems with incorrect units that should be fixed in main repo components