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Data Decimation in ChartJS
#1
The provided example is very simplistic: you give the chart 10 values and 10 / matching number of  labels and that's it.

What do I do if I have a very long list of frequent readings for a small number of hours or days? - how can I stuff all these values into the chart and only have 24 hour labels? Or 7 days worth of labels? And possibly decimate it as well? My "X" values for the data points is in Unix time format - seconds from something in the past, or I can make it TDateTime instead, but I would want the few shown labels to refer to around the current time / date.

Also, if I have gaps in this data, I want it shown as a broken line - - - - - or something. Hopefully automatically, without actually looking for any gaps in the Delphi code.

It looks like ChartJS supports both, but I could not figure out how to feed this into the TIWChartJS component, hope you can help...
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Messages In This Thread
Data Decimation in ChartJS - by iwuser - 02-26-2024, 11:32 PM
RE: Data Decimation in ChartJS - by iwuser - 02-28-2024, 03:42 PM
RE: Data Decimation in ChartJS - by iwuser - 03-01-2024, 12:11 PM
RE: Data Decimation in ChartJS - by iwuser - 03-02-2024, 03:53 PM
RE: Data Decimation in ChartJS - by iwuser - 03-09-2024, 10:31 PM
RE: Data Decimation in ChartJS - by iwuser - 04-22-2024, 06:51 AM
RE: Data Decimation in ChartJS - by iwuser - Yesterday, 04:42 AM

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