Problem with repeated values on x-axis

[dmiklic]

A repeated value on the x-axis inhibits further plotting. This file demonstrates the issue. Upon loading the file, if I select _Column_0 as the time axis, which has identical values in rows 3 and 4, when I try to add e.g. column A to the plot area, only the first two values of A will be plotted.

My actual use case is a dataset of densely sampled (1ms) data. Occasionally, I will have two data points with the same timestamp, which is not really an issue, however, it seems to prevent PlotJuggler from correctly plotting the data.

This is with the currrent master head.

[facontidavide]

I am afraid that this time I will not be able to give you a quick fix..
The assumption of monotonic time is made in many parts of the code,being a notable example the publisher plugin.

[dmiklic]

I guess I got a bit greedy, seeing how quickly you made the other fixes. I suppose I can put some effort into cleaning my data up a bit :)

However, is there any reason this should not work on an XY plot? Because, for me it does not.

[facontidavide]

it is really a problem of data structures. It might look as a simple feature from the outside but it will affect many parts of the code, not just the XY plot (several corner cases should be taken into account).
In other words, I am afraid I will prioritize other features, since this one requires a lot of work for a comparably small gain.

Don't hesitate anyway to ask for improvements. if I can, I am usually happy to work on them.

[dmiklic]

Sure I understand. Anyways, 2/3 fixes within 24 hours is a very decent score :)

[dmiklic]

Could we leave the issue open? I understand that It won't get fixed in the near future (or maybe ever :) and there are straightforward workarounds, but I feel like the feature itself is not unreasonable.

[facontidavide]

of course it is not unreasonable ;)

[facontidavide]

One year later...

[dmiklic]

Great, thanks! :)