Streaming Moves Rapidly Left when Duration of Graph is Full of Data about chartjs-plugin-streaming HOT 4 CLOSED

FWIW, I was able to replicate with the date-fns and adapter as well. The date/time function doesn't seem affect this issue in any way. I'll see if I can capture a short GIF to show the behavior.

from chartjs-plugin-streaming.

Hopefully you can see in the attached GIF that the data starts to move rapidly to the left (faster than the timestamps) and eventually disappears.

from chartjs-plugin-streaming.

Ok... one last item. I added a console.log to check the length of my chart.data.datasets[probe_mapper['probes'][probe]].data every time it fetches new data in the onRefresh() function. And it would seem that the list length goes up to 108 at the maximum then starts to reduce to 4 data points where it stays. It's almost as if onRefresh starts popping the data from dataset, but I'm not sure.

The duration in the example above is set to 5 minutes or approximately (5 * 20 datapoints per minute = 100 datapoints). As you can probably tell, the datapoints are 3 seconds apart, until the streaming starts occurring and then the datapoints are 1 second apart. Not sure if this has relevance, but perhaps there is some error in the math.

from chartjs-plugin-streaming.

I've discovered my mistake. When populating the data during onRefresh, I was not pushing in the {'x': timestamp, 'y': temperature} format. Furthermore, I was not populating the chart initially in this manner either. Thus, the label array and they data array were out of synchronization. This caused the odd behavior.

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