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1:01 pm
April 2, 2011
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I’m unable to locate any information on how to generate an animated graph similar to Dynamic Light Levels graph on the main page. Any guidance would be greatly appreciated.
2:46 pm
Admin
January 18, 2011
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Here's what we do to generate the chart on our home page:
1) We load up the last 15 entries on the channel and draw the chart
https://api.thingspeak.com/channels/9/field/1.json?callback=?&results=15
2) After 15 seconds we request, the "last" entry in the channel and update the chart if the last entry is new
https://api.thingspeak.com/channels/9/feed/last.json?callback=?
If you view the source of our home page, we have the process documented. You can use a ThingSpeak Plugins to make your own version with your own data.
Let us know if you have anymore question. Have fun!
3:01 pm
April 2, 2011
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I did view the source, thanks for the info! I'll see what I can make of it.
Thanks!
9:05 pm
April 2, 2011
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5:41 am
Admin
March 14, 2011
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We made this easier for you, when you use the iframe embed code just put &dynamic=true on the end of the src attribute. It should look something like this:
<iframe width="450" height="250" style="border: 1px solid #cccccc;" src="https://api.thingspeak.com/channels/9/charts/1?round=2&results=15&dynamic=true"></iframe>
4:43 am
April 12, 2011
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I noticed the &dynamic=true option expands the graph (and compresses the data) and doesn't actually scroll the time range like the homepage chart-- anyway to make this another parameter or the default behaviour?
8:04 am
Admin
March 14, 2011
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You're right that should be the default behavior. It's changed now. To prevent data from being pushed off the left side of the chart you can add &push=false as a querystring parameter.
4:27 pm
April 12, 2011
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Thanks lee, that works great now! Very nice charts btw.
9:42 am
May 13, 2011
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Auto updates don't seem to work when the chart is embedded in the iframe_loader in Wordpress, any thoughts?
4:05 pm
Admin
January 18, 2011
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Can you provide the chart URL you are using? "dynamic=true" must be on the Chart API URL.
The demo is live on our documentation using the iframe_loader plugin.
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