Cumulus Support

This graph (tempm.png) shows data of the last 31 days. This is fine for the web graphs.

However, I am also interested in a longer period, up to a year, using Select-A-Graph. There I can't find a min/max/avg temperature option. The existing outside temp option generates a graph that is unreadable if the the period is more than about a month.

Am I overlooking something, or is there another way to have my graph?

You can't do that with Select-A-Graph because that's not a 'daily' graph, it uses data from the 'monthly' log files, not dayfile.txt.

Within Cumulus, you could change the period of the daily charts (and then restart), but other than that you would have to look at a solution external to Cumulus, e.g. load a copy of dayfile.txt into a spreadsheet and get it to draw a chart from the values.

Thanks. Using a spreadsheet is what I needed. Easier than I thought.

For other newbies:
I just took a first look into (a copy of) dayfile.txt, opened it in Excel. Lots of columns. Figured out that columns A (date), E(tmin), G(tmax) were relevant (afterwards I checked this in the Wiki)
Generated an Excel graph of the selected columns A, E and G, and thats it. The total process took me less than 10 minutes, next time it will only be a minute. My raw graph:

Yes, always work on a copy to avoid the possibilty of Excel rewriting the file accidentally

henkg wrote: Figured out that columns A (date), E(tmin), G(tmax) were relevant (afterwards I checked this in the Wiki)

For reference there are header files in the Cumulus folder 'dayfileheader.txt' and 'monthlyfileheader.txt' that you can import into Excel for the column headings.

Useful tip about: 'dayfileheader.txt' and 'monthlyfileheader.txt' . Thanks.