I am not sure I quite understand the data log interval. I have a VP2. In cumulus I have set the data log interval to 5 minutes. What exactly is that setting for? Clearly the data in cumulus gets updated much more often when using the VP2. It seems the data is updated as often as the Davis console is updated (I think every 2.5 seconds for some functions). So what gets transmitted in the data log?
I have read that the Cumulus data log interval should be set the same as the Davis data logger. How do I set the Davis data logger? Do I have to use WL software for that? Is there anything I need to be aware of when starting up WL if I am running Cumulus? (I actually dont even have WL installed on this new computer).
What are the pros and cons of the different data log interval periods?
How much memory will these data logs use over time? Anyone have a rough estimate? I have a decent size C drive, but I dont want to fill it with WX data.
Is there a way to check what my log interval is on the Davis VP2 (without the WL software)?
TIA
Welcome to the Cumulus Support forum.
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
VP2 data log interval questions
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: VP2 data log interval questions
It's a "snapshot" of the data, every few minutes. Storing every reading at 2.5 second intervals would consume large amounts of space and wouldn't really give any benefits.superduty wrote:I am not sure I quite understand the data log interval. I have a VP2. In cumulus I have set the data log interval to 5 minutes. What exactly is that setting for? Clearly the data in cumulus gets updated much more often when using the VP2. It seems the data is updated as often as the Davis console is updated (I think every 2.5 seconds for some functions). So what gets transmitted in the data log?
Yes, you have to use WL.How do I set the Davis data logger? Do I have to use WL software for that?
Just don't try to run them both at the same time - unless you use VirtualVP, which would allow that - http://www.softwx.com/weather/virtualvp.htmlIs there anything I need to be aware of when starting up WL if I am running Cumulus? (I actually dont even have WL installed on this new computer).
A longer log interval will give smaller logs, but will give a coarser set of data - any graphs that you draw or any analysis that you do on the will be less useful. The wind speed is affected the most, other parameters don't tend to change so quickly. The advantage of a longer interval as far as the station logger itself is concerned is that it gives you a longer period that you can go without a PC running before you start to lose data - is has 2500 entries, so at 1-minute intervals that's about 42 hours, at 5-minute intervals it's just over a week, and so on.What are the pros and cons of the different data log interval periods?
I have just over three years data for my current station, and at 5 minute intervals it takes up about 13 MB.How much memory will these data logs use over time? Anyone have a rough estimate? I have a decent size C drive, but I dont want to fill it with WX data.
Any data logged by Cumulus which was taken from the logger will be logged at the station logger interval, so if you know a period when logger data was used (because Cumulus was not running at that time) you can see the interval in the Cumulus logs. The default is 10 minutes, so that's probably what yours is if you haven't run WL.Is there a way to check what my log interval is on the Davis VP2 (without the WL software)?
Steve