during zoom phase, markLine with type=average doesn't respect the correct zoom window, but show the avg of all the dataset.
it's possible to force it to calculate the avg of the "visible" zoom window of data?
for instance if i zoom from 1 to 10 i want to see the avg calculated from 1 to 10 not from 0 to end_data
8条答案
按热度按时间wbgh16ku1#
I think that is exactly what markLine of type average is doing...:
Go to example https://ecomfe.github.io/echarts-examples/public/editor.html?c=area-simple
Add a markLine:
This markLine shows the average of the current view...
mxg2im7a2#
it doesn't work for me
here a demo
http://jsfiddle.net/qsbLt2a9/
avg of temp = 27,5 (correctly displayed if no zoom)
if i zoom on a interval of 29/30 the avg stay 27.5
that's the full view ( correct)
that's the zoomed view ( not correct)
s6fujrry3#
OK, it looks like "filtermode":"none" in "dataZoom" prevents the line from being adjusted, since nothing is being filtered out... unfortunately if you set "filtermode" to "filter" with so few series data items, the line draw is then not completed either...
6tqwzwtp4#
so, we can consider that a bug?
filtermode and markLine shouldn't "interfere" imho.
0yycz8jy5#
I think it is just as it was designed. By filtering out all data points being not in visible range, the average value is re-calculated. This is at least the explanation. Whether it is considered as a bug or a new feature request, it depends on the contributors.
If I had to implement this, I would filter out all non-visible points, but I would complete the line drawings towards the left/right edge of the viewport by looking at the unfiltered series...
fsi0uk1n6#
Probably we need to support another
filerMode
option, with filter out all values outside the view, except the ones next to the points inside the view.This option makes sense only in line chart, but after all line chart is a commonly used chart.
2jcobegt7#
well it make sense also for people that use custom item renderer actually, and want to track back previous record.
wfauudbj8#
I would say a nice feature would be also to be able to apply
filterMode
only to certain datasets you want.I've the common issue of lines/markAreas disappearing when zooming, it can be solved by setting
filterMode: none
but if I do that performance-wise the graph becomes very bad.