I'd like to enhance my Meteoplug dashboard (http://wetter.isenegger.org/alle-wetterdaten/) with a new "graph" / table that e.g. shows the following information per time period (e.g. per month, year, etc.):
- The usual stuff like min/max/avg temp / wind, etc.
- number of heat days (temp >30 C)
- number of frost days (temp <0 C)
- day with largest rain amount
- number of days without any sunshine
- maximum pressure change within 3 hours
- etc.
I believe I can program it myself by using a Template ("template=http://...") that refers to a PHP file which dynamically generates the HTML code with all required variables in it ("20150301000000_month1_th*_xxx", etc.), so the Meteoplug server can insert the desired raw data into the variables (would be hundreds of variables or more per template call but I read somewhere that this shouldn't be an issue regarding load / performance). With the necessary database values at hand, I could then calculate and generate the desired Information above within the PHP file.
The only thing that prevents me in doing so is the point that I do not get the required "timeframe" information through the template mechanism. It seems that none of the two possibilities happen:
- the meteoplug Server does not translate any relative timeframe values of template variables from a given "&timeframe=YYYMMDDhhmmss-YYYMMDDhhmmss" call Parameter, i.e. [1M_month1_th*_xxx] is always the current month, not the first month of the specified "&timeframe=" period
- the "&timeframe=" value is not handed over to the Template file and cannot be retrieved by any command (like $_GET, etc.)
It would be great if you could find a way to hand-over the graph's call parameters (at least "&timeframe=xxx" or even the whole string behind the "?") to the template file in any way. By getting this information, a programmer could bascially program any desired function and calculation via PHP on his own and enhance the Meteoplug possibilities significantly. Without this Information, it's not possible to use templates in a dynamic context and I'm limited to the pre-defined graph types.
In addition to getting the "&timeframe" value, which would be the key for dynamic templates, I also thought about some additional ways to get sensor data into a template script:
- Enhance the template variable replacement in a way that you could fill an array. Means, that I could get a whole data set instead of one value only. So e.g. [20150301000000-20150331235959_hour1_th*_temp] would return all hourly temp values from 1.-31. March 2015 (from the hourly time bucket) ... could be an array or just a very long string with a delimiter. By that I could easily "dump" required parts of the database down to a certain detail level into a script for various sensors and do my calculations
- the implementation of a kind of call function that would allow the on-the-fly translation of a variable into the value. Maybe something like "meteoplug.com/translate.cgi?user=&variable=[20150601000000_hour1_th*_temp]" returning the value of that variable, or a full data set for a timeframe as in the point above ... but this call would need to be performant enough to be executed at least hundreds of times per second or more, otherwise a external programm cannot get all required data within reasonable time. I assume this is not feasible, honestly.
Or ... there is already a very simple solution that I just haven't found yet
Thank you very much in advance for reading and considering my proposal!