I'm trying to plot a chart from a collection I have created. While the data from this collection maps fine, I can't seem to produce a chart for it.
var sstMonthly = temporalCollection(sst, ee.Date('2013-01-01'), 12, 1, 'month'); print('sstMonthly', sstMonthly) print(ui.Chart.image.series(sstMonthly, BIOT, ee.Reducer.mean(), 500));
Which gives this error;
Error generating chart: No features contain non-null values of "system:time_start".
From what I've read it seems that the error is probably because it can't find the property. But nowhere states how to find that property in the image collection or what the correct syntax to add it into the code for charts is. Any help?