I’m trying to show average energy use in different periods using a bar chart.
Assuming I have data:
2022-01-01 - 1000
2022-01-20 - 1400
2022-02-05 - 2000
2022-02-28 - 2500
2022-03-15 - 2900
I want to be able to show 4 bars:
- of height 400, with width spanning from Jan 1st to Jan 20th
- of height 600, with width spanning from Jan 20th to Feb 5th
- of height 500, with width spanning from Feb 5th to Feb 28th
- of height 400, with width spanning from Feb 28th to Mar 15th
Bar heights are obviously not a problem, but I’m having had time getting bars to their widths and positions. I know I can use
width properies of data points, but bars are centered on given date rather than spanning between dates and I’m not sure how to calculate correct width.