UV Axis scaling
Posted: Mon 29 Jan 2024 11:27 am
Hans - I know you're busy with other stuff so I'm posting this so that I don't forget it.
Friday was sunny...well winter sun with a clear sky which was nice for a change. Solar peaked at 250W/m2 and it was even clear enough to get a bit of UV, only reaching a maximum for the day of 0.6 though. This highlighted a couple of things with the UV plots...
1) The UV axis was scaled from 0 to 1 which was reasonable (but see (2)), but the '1' wasn't plotted at the top of the axis.
2) I don't think auto scaling of the UV axis really works because of the way that the index is used in real life. An index of 0.6 is nothing to worry about, but the plot for Friday is two-thirds of full scale so to a casual viewer (or a casual glance) it looks to be fairly high and I should be digging my sun screen bottle out. I wondered whether it would be possible to have a 'minimum' maximum axis setting for this, e.g. it would be very rare for the index to get above 10 here, so I could set the 'minimum' maximum axis to 10 and my axis would always be scaled from 0 to 10, unless the index went above 10 in which case it would scale as normal. This would mean the 0.6 index on Friday would be far better indicated as a low value.
Friday was sunny...well winter sun with a clear sky which was nice for a change. Solar peaked at 250W/m2 and it was even clear enough to get a bit of UV, only reaching a maximum for the day of 0.6 though. This highlighted a couple of things with the UV plots...
1) The UV axis was scaled from 0 to 1 which was reasonable (but see (2)), but the '1' wasn't plotted at the top of the axis.
2) I don't think auto scaling of the UV axis really works because of the way that the index is used in real life. An index of 0.6 is nothing to worry about, but the plot for Friday is two-thirds of full scale so to a casual viewer (or a casual glance) it looks to be fairly high and I should be digging my sun screen bottle out. I wondered whether it would be possible to have a 'minimum' maximum axis setting for this, e.g. it would be very rare for the index to get above 10 here, so I could set the 'minimum' maximum axis to 10 and my axis would always be scaled from 0 to 10, unless the index went above 10 in which case it would scale as normal. This would mean the 0.6 index on Friday would be far better indicated as a low value.