Trendline for data series and dates on X-axis

[piw...@gmail.com]

Hi, is it possible with Google Chart to add a trendline to LineChart graph with two data series distributed by data in X-axis, like: ['2021-12-29', 4.65, 1.65] ? It seems not possible in my lab...

thanks, Thomas

[piw...@gmail.com]

simple, my dear Watson:

1. start with declaring column type

google.visualization.arrayToDataTable                                 ([[{label: "Data",      type: "date"},

2. populate dates like:

[new Date('2021-01-04'), 0, 0, 0],

...but. it took me quite some time to figure it out!