Davis VP2; Recent Charts - Wind Speed - resolution?

[EI4HQ]

Hullo,

Cumulus MX 4.3.1 b4064
Davis Vantage Pro 2 (6152 console, datalogger)
Station logging 1 minute
MX logging 1 minute

Very recently moved to MX from the old Cumulus. Very pleased, however still figuring many things out. One matter that I'm a bit confused about and haven't been able to sort:

Recent Charts -> Wind speed -> the display resolution doesn't look to me to be 1 minute. The wind direction chart looks right but the Wind Speed looks like it's been subject to some kind of averaging... See attached. Am I misinterpreting/imagining or have I set something up wrong?

[mcrossley]

The recent charts are 1 minute resolution, run your cursor over the points and it will show you the date/time and value.

The chart plots the recent gust and average wind speeds. The period is 10 minutes by default to correspond with most meteo standards.

With MX you can change the average speed to display decimal values - C1 only allowed integer averages.

[EI4HQ]

Hi Mark,

Thanks for the info.

The period is 10 minutes by default to correspond with most meteo standards.

Understood. Just for the sake of completeness/understanding, is it possible to display wind speed at 1 minute intervals or is 10 minutes the design decision? If so, that's no issue at all, I'll adapt

[mcrossley]

You want to average the wind speed over 1 minute? Yes you *can* do that, but it would be unusual. C1 used 10 minutes as well.

If you change the average speed to use decimal values, you will see the average change every minute. It's just because you are using an integer average and the wind speeds are low that the graph looks blocky.

[EI4HQ]

If you change the average speed to use decimal values, you will see the average change every minute. It's just because you are using an integer average and the wind speeds are low that the graph looks blocky.

Duh... Got it, second time around. Sorted, thanks Mark. Sorry for being a klutz; brain fog, I need my holidays.