Multichannel display from Thingspeak.com using Highcharts.com. by turgo initially released at http://forum.arduino.cc/index.php?topic=213058.msg1560990#msg1560990
Displays multiple channels of data and fields, using Highchart.com, from a thingspeak.com channels.
Features:
- cursor click (vertical rectangle, kind of) on chart to zoom y-axis
- top left buttons to select range of data, or use timeline below chart
- top right 3 bars ("burger menu") to download data as picture/pdf/csv/xls
- hide/show all or certain traces
- auto-load new data (if righthand-side of graph set to last values and checkbox checked)
- load single/all channels from thingspeak which are connected
The data will be averaged if it's too dense to display after a certain zoom-out level, gaps in data are always connected by a straight line.