Home › forums › Using CanvasJS › CanvasJS – Get Current Time Range
This topic contains 4 replies, has 2 voices, and was last updated by patricia.krupa 2 years, 3 months ago.
i need to write a chart that deals with a large number of datapoints collected on a device, more then a million after after a year. For that i am writing a dynamic fetching mechanismus that gets more detailed data after zooming. Is there a way to get the current start and end date of a rendered chart ? (The Values on X-Axis are Dates)
I found the “intervalStartPosition”, which would be close to the “enddate”, far right axis point, however i dont see a value with contains the other end.
Is there a way to access those informations ?
Thank you very much
Please have a look at viewPortMinimum, viewPortMaximum, minimum, maximum.
Also you can go through rangeChanged and rangeChanging events which are triggered after/before viewportMinimum or viewPortMaximum are updated while zooming, panning, or reset.
However, those values are some Integers, how can i get the Date values ? Can i set somewhere the type to Date ?
My options object looks like this:
text: “Temperature History”
dataPoints: [ ]
legendText: “Temperature Set”,
You can pass x-values as either timestamp or in valid date format to use date-time over axisX. Also to set the type of the axisX interval you can use intervalType.
If this doesn’t solve your requirement, can you kindly create a jsfiddle so that we can look into it and help you out better.
Setting intervalType to minute solved it! Thank you!
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