Chart image export | ThingSpeak API

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Chart image export

November 1, 2013
8:23 am

meltsys

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Hello,

Does the export button appear for you ?
https://www.thingspeak.com/channels/8229/charts/2?export=true
doesn't work for me

otherwise, is possible to get back an image URL from a GET request ?

Thanks

December 3, 2013
5:46 pm

Hans

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January 18, 2011

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Working on a fix for this issue... thanks for letting us know.

December 3, 2013
5:51 pm

lee

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March 14, 2011

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Hi,

We just fixed this, the export buttons should appear properly now.

lee

December 4, 2013
1:46 am

meltsys

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It works . Thanks

Is there a way to obtain a png URL from a get request ?

Thanks again

December 4, 2013
1:14 pm

lee

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I don't think it's possible to obtain the png URL via HTTP GET, since there's a lot of data that has to be sent to the backend server for the chart to be rendered. The button POSTs the data to a server, and the POSTed data is dependent on the current chart state.

December 4, 2013
2:40 pm

meltsys

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Thanks do your replies.

Would it be easier with a post command ?

I' m really interesting to this feature to display chart on a display without browser, JavaScript, etc.

If there is a way, I can try to help

Many thanks again and congrats for your work

December 4, 2013
10:41 pm

lee

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Since the charts are rendered by the browser using JavaScript, I don't think it would be possible to do what you're asking. The JavaScript actually creates the chart using SVG, and exporting the chart involves POSTing the SVG data from the browser using JavaScript to a backend server to convert it into an image.

For more information, please see: http://www.highcharts.com/docs/export-module/export-module-overview .

lee

December 28, 2013
3:40 am

CorBee

Netherlands

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December 10, 2012

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lee said

Hi,

We just fixed this, the export buttons should appear properly now.

lee

Hi,

I have the feeling that this functionality is again gone ... I remember seeing in the upperright corner of the graphs the export buttons ... currently (and I am logged in) I dont see any.

cheers
Cor

December 28, 2013
12:14 pm

lee

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By default the export buttons are hidden; the charts will only show the export button if you add "export=true" as a querystring parameter: https://www.thingspeak.com/channels/8229/charts/2?export=true .

lee

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