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TSVB - timeseries graph stacking doesn't work when using calculation with negative values are filtered by terms #15543
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Hi all, First, I think it is not a bug and all values are used for aggregation. (stacking, of lines) Anyway, it looks like negative, calculated, values are ignored; but in fact, the values are added to (stacked over) positive high values (so just the results are nearly 0, so no negative lines are there.) See attached images: : original graph with stack option "none" : just "stacked" option for negative values --> it works as shown. (growth of negative area) : "stacked" options for all series --> see darker shadow on area. it means, line and area for negative value covers positive lines and areas of stacking. Yes, the final value of summation, means stacked, is near by zero. since the positive value and negative value on same document are mostly same length with different direction. So negative value itself is working for stacking. |
It's NOT a bug, anyway what I want to say is, and my feature request for this issue is: I think we need some additional key for the stacking group. Just separated group of stacking, and the key(name) of the stacking group. it makes us can draw this kind of graph on the same page(graph). (in my case, they are RX and TX of ports on network switch) Sorry for my poor English, anyway the graph and drawing show something. :-) |
@sio4 - I believe the values are correct but when stacking the charts; the plots are somewhat skewed. Just to clarify. |
@nich07as see second graph. It shows stacking of negative values only and works well. And on 3rd graph, you can see dark purple area. It was generated with overwrapped blue area of negative values over existing red area of positive values. Means, stacking as up-up-down-down not up-up-up-up. So it is normal and works well with those data set. The problem is we cannot just separate them as two sets of stacking. As RXs are on one group, TXs are on second group. |
Do we have this feature in Kibana? I wanted to stack -ve values on the -ve Y-axis (4th quadrant ) but does not work |
Kibana version: 6.0.1
Elasticsearch version: 6.0.1
Server OS version: Centos7
Browser version: Chrome
Browser OS version: MacOS Sierra
Original install method (e.g. download page, yum, from source, etc.): yum
Description of the problem including expected versus actual behavior:
The TSVB when drawing a graph on negative values; i.e. using calculation with params *-1; then filtered by terms; and the
stack
option is used; the value computation does not seem to honor the calculations.Steps to reproduce:
Errors in browser console (if relevant): No errors but visuals are presenting data that's somewhat skewed.
Provide logs and/or server output (if relevant): No error.
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