Displaying data of last year

Discussion about generation of graphs and tables
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Bjarne
Posts: 3
Joined: Thu Feb 21, 2013 9:56 am

Displaying data of last year

Post by Bjarne » Mon Jun 03, 2013 12:02 pm

Dear all,

I would like to display in a graph the data of the current day one year back to have a nice comparison of today's data and the weather one year back. (or this month compared to last year's month)
How can I define the graphs in a dynamic way that every new day or month I also see in different graph the values one year back?

Thanks for your answers.

Kind Regards,
Bjarne

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admin
Site Admin
Posts: 332
Joined: Sun Feb 07, 2010 9:22 pm

Re: Displaying data of last year

Post by admin » Tue Jun 04, 2013 6:36 pm

I don't think that this is possible. You can do graphing on distinct dates,
or timeframes from now back to a certain amount, but not on today last year.
I never thought that there might be a request like this. 8-)

bubulino
Posts: 17
Joined: Thu Aug 12, 2010 12:05 pm

Re: Displaying data of last year

Post by bubulino » Tue Feb 11, 2014 5:02 pm

Hi Bjarne and Boris

I searched in the Forum just for this possibility:

Display the "greenlandtemperature" from this year and the greenlandtemperature from last year in the same graphic with different colours.

Definition:
http://de.wikipedia.org/wiki/Gr%C3%BCnl ... ratursumme

Graphs per year:
http://www.wetter-lueterkofen.ch/wetterdaten

In the definition there is something special:
Eine Wärmesumme ist allgemein eine gewisse Lufttemperatur eines Tages über die Tage einer Periode aufsummiert. Dabei verwendet man besonders die kumulierte korrigierte GTS, die nach Monat gewichtet wird:
Es werden ab Jahresbeginn alle positiven Tagesmittel erfasst (also alle Tage ohne Frost)[1]. Im Januar wird mit dem Faktor 0,5 multipliziert, im Februar mit dem Faktor 0,75, und ab März geht dann der „volle" Tageswert (mal Faktor 1) in die Rechnung ein.


Is there a possibility, to implement that?

Thanks

Markus

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