Bar Chart

[Bar4tus]

Hi, I need to create a column chart with weekly electricity consumption and water consumption.
I need to connect KNX objects with data from Monday to Sunday and show them on the bar graph,
I need to use Google api or something like that?
I'm just starting with js and css, so I need help

[admin]

Why not use trends in week view? It won't be a bar chart but it works without any extra programming. Google charts can also be used but that requires some extra effort. Short example here: https://forum.logicmachine.net/showthread.php?tid=1400

[Bar4tus]

Why not use trends in week view? It won't be a bar chart but it works without any extra programming. Google charts can also be used but that requires some extra effort. Short example here: https://forum.logicmachine.net/showthread.php?tid=1400

Yes, can use trends but trends didn't show how many kWh we use in week.
If I use bar i can show that, for example in monday we usuage 60kWh per day and 2m^3 water per day, in trends clients not look that.

[Daniel]

Month view shows days consumption,

[Bar4tus]

Month view shows days consumption,

No don't show day consumption, it show's only average value on that day, this value is not sum of value per day

[admin]

You have probably selected absolute value mode instead of counter.

[Bar4tus]

You have probably selected absolute value mode instead of counter.

 Yes i use it.

I should take counter ?

[admin]

Yes, absolute value is meant for temperature sensors and similar data. In your case counter mode should be used.

[Bar4tus]

Yes, absolute value is meant for temperature sensors and similar data. In your case counter mode should be used.

Ok, can you give me more information how work, counter mode? I have data object were i have 15min power consumption, how i can show it. 
I need a chart with  sum when turn weekly view. 
For example, 
I know that I use 1kWh per our, when i look at day view i see 24 point one per our with 1kWh value and it is correct,
but when I use view weekly I need see 7 point with value 24kWh, but i see value 1kWh also.

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[Daniel]

Weekly view shows data in the same resolution as daily. Monthly view will show you daily consumption.

[admin]

For counter mode to work properly you need a source object that has total consumption.

From RRD docs:

COUNTER is for continuous incrementing counters like the ifInOctets counter in a router. The COUNTER data source assumes that the counter never decreases, except when a counter overflows.

[equalizer]

The raw data is stored in the history trend, the history service make this data available. Grab data, send to Google and then chart it?