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biolab / orange3-timeseries

🍊 :chart_with_upwards_trend: Orange add-on for analyzing, visualizing, manipulating, and forecasting time series data.
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Data from cursor does not match #138

Closed hufnala closed 4 years ago

hufnala commented 4 years ago
Timeseries version
newest, PC is off at the moment ##### Orange version

3.27

Expected behavior

A Cursor line on more than 1 Plots show data from the same dataset independing of zoom

Actual behavior

Shown values are not from the same dataset if there is a lot of data.

Steps to reproduce the behavior

Load a dataset with more than 5000 entries and a couple of data columns, in my set i use numeric values with 3 digits, there's some spikes in the dataset, add at least 3..4 plots, activate cursor on one value, >data shown in text window does not fit on all plots (known & checked results). Zooming the plot changes the behavior on unknown zoomlevel, data matches, zoom out again - data does not march any more again.

Additional info (worksheets, data, screenshots, ...)
kernc commented 4 years ago

This is a Highcharts feature:

Grouping is activated when there are many data points in the chart. As well as increasing performance, it makes it easier to spot trends in a chart. By default, the grouping approximation depends on the type of series: Line type series use an average approximation.

Strongly leaning to wontfix.

ajdapretnar commented 4 years ago

I see your point, but if this is indeed a Highcharts feature, bypassing it here would be difficult (also considering we stay away from JS as much as possible). I suspect could be fixed eventually with #58.

I think for now, it would have to be a wontfix. I suggest using Time Slice for creating subsets.