Lack of units on the chart

[mkarmona]

The chart shows two temporal series but the lack of complementary colour and a opposite y-axis makes the interpretation more difficult.

May I suggest some minor improvements to increase readability

• [ ] add an opposite second y-axis with percentage of rain
• [ ] use a bar instead of an area
• [ ] use a complementary colour to match y axis

Some additional resources

• https://uxplanet.org/data-heavy-applications-how-to-design-perfect-charts-c0c893fef6de
• http://freerangestats.info/blog/2016/08/18/dualaxes

[TylerWilliamson]

This is mainly an issue in the winter when the temperature is in the "blue" colors. Though, I admit there may be some ways to improve interpretation.

The precipitation area chart is not the chance of rain, rather its the amount of rain expected during that hour. I do not think a bar chart would improve that interpretation. As for the secondary axis, while possible, the amounts are actually quite small and may create more confusion. I'll give it some thought, though.

[mkarmona]

I see, you are using a changing colour based on the temperature value. I think that is a bit redundant as you already provide the y axis for the pluviometry so fixed colour scheme for the plots are usable for the double y-axis. Thanks for the explanation.

[GuillaumeLeGoc]

Hey, just chiming in, I would love a right y axis that gives the rain amount (I guess mm are plotted at the moment). I think it's a useful info, because as there is no scale for rain, I can't know if a rainjacket will do the trick or if I'm gonna drown and better off in the bus 🥲

[TylerWilliamson]

For clarity, the rain scale is from 0-2mm per hour. The graph scale does not change. I've tried to come up with solutions to show the data, but have not found a good clean solution that would not cause confusion

[new2f7]

I strongly support adding a scale on the right side for the precipitation, as it will increase readability for as the average user. Currently, the average user (as demonstrated above) cannot be sure about how to interpret "rain" in this chart.

Additionally, I suggest the following things:

• As the chart is scrollable, I suggest that both scales are fixed on the left and right side.
• Make the chart a little bigger (y-axis dimension).

I do not support using a bar chart for the precipitation.