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Author Topic: Graphs and things...  (Read 2292 times)
wyleu
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« on: March 28, 2007, 11:55:05 AM »



Go to the link below to get a better version.


http://www.spritenote.co.uk/7day.html
It seems to work better in IE than it does in firefox but such is life. ( I now know a bit about how IE mangles images Smiley )
You can get the actual value of the graph by floating the cursor over the graph, Saves all those tedious scales. Blue section is less than O degrees red section greater than 100, light vertical bars are midday / dark bars are midnight.

Finally got some graphing going on, It's all done in html, (admittedly with the depreciated span tag) but it does allow multiple day, sensor sellection and screen width and a nice little trick with grads and tables to indicate scales altho' I say it myself.

For those that like their url's this is sensor 1 showing 7 days at a screen width of 1000 pixels.

Observations gratefully received.


More as I get it.
« Last Edit: March 28, 2007, 04:29:09 PM by wyleu » Logged
O MidKnight
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« Reply #1 on: March 28, 2007, 03:43:36 PM »

Great show

but nothing happens when my cursor is moved. Where is the sensor reading from?
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Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
wyleu
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« Reply #2 on: March 28, 2007, 04:06:23 PM »

There are 5 one-wire sensors on the thermosiphon rig linked via a one-wire usb dongle into a crappy old pc running linux with postrges as the database, and linked together with django and python. This generates the web pages plus controls the environment. The next two features to go on are the 50 underfloor heating sensors and the second set of panels plus all the ancillary bit's and pieces around the tank.

I've changed the link to point at an html files so the cursor floating trick should now work.

http://www.spritenote.co.uk/7day.html

Much happening at wyleu towers at the moment so once the second set of panels are up... Cheesy
« Last Edit: March 28, 2007, 04:30:43 PM by wyleu » Logged
O MidKnight
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« Reply #3 on: March 28, 2007, 05:44:57 PM »

OK   Got some readings now

Well done

Keep us infomed
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Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
wookey
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« Reply #4 on: May 14, 2007, 03:02:37 AM »

Nice bit of work there, but you could have got most of the same thing for a tiny fraction of the efforts by using munin. This does the data-collection, data-storage and graphing parts for you. It's very simple to provide arbitrary new values to graph. See http://www.aleph1.co.uk/munin/aleph1.co.uk/stoneboat.aleph1.co.uk.html for an example of the sort of output you get.

Just something that struck me, reading what you had done.
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Wookey
wyleu
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« Reply #5 on: June 04, 2007, 02:47:50 PM »

Many such systems exist, I just like doing my own thing. Any links are wonderful.
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