Working on an application that requires toggling between Linear and Logarithmic scales. I am using the JavaScript version of the library, and I see that there is a LogarithmicNumericAxis available in the WPF version but there is not one currently supported in the JS version.
Curious if there were any recommendations on how to go about hand rolling this type of functionality?
The application is doing realtime streaming of data points so need to be able to update existing values as well as handle incoming values.
- James Miller asked 4 years ago
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Hi James
It’s on our roadmap and we’re working on Logarithmic Axis for SciChart.js as we speak.
What are your requirements for log axis? What kind of use-cases do you need? Does the data contain both negative and positive numbers? Do you need log base 10, log E or log 2? How do you expect labels to be displayed? e.g. with scientific notation, engineering notation or just standard?
Best regards,
Andrew
- Andrew Burnett-Thompson answered 4 years ago
Great to hear that it is an upcoming feature. There are positive and negative values. If necessary negative values can be stripped out but would affect linear values. Log base 10, scientific notation display labels are preferred. Standard notation is OK
OK got it. Positive / negative is a difficulty as those pass zero and create an asymptote. However I believe we’ve ‘solved’ that problem in other platforms, you have to create a dead zone and filter data, or show one side or the other. Will keep you updated
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Any idea when this feature is likely to be implemented?
Cheers
- Henrique Rodrigues answered 4 years ago
Is this feature available yet? I need it for an active project. I had assumed it was available as we’ve been using the WPF version with this functionality, and we need to develop a web app with the same. If not, is there a list of other missing features from javascript version?- Hi Michael and Henrique, Logarithmic Axis has been implemented in our v2.x internal build. We are also developing a number of other major enhancements such as Vertical stacked Axis, Central Axis, Point Metadata, Series & DataPoint Selection, Theme enhancements and more. Release date for this next major version is end of August. If you need something sooner, we can provide access to BETA builds on the proviso that it is in-flux and may have breaking changes.
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