Bin range in column description

[reza1615]

Please add bin range as a second xaxis to the histogram.
For example: I need to know Ratio of survival of each age range.

[aschonfeld]

So this is really hard to add since the bins could be different for each target value. When I create the target histogram I break the data up into groups (one for each target) and then compute the histogram buckets for each group. So therefore the buckets could be different for each group making the display very hard to show since there could be a lot of targets (and thus a lot of bin ranges).

If you believe the target histograms are being calculated incorrectly then that's a different story. I could fix that logic and then display the ranges.

[reza1615]

You have already the bins just need to get its range now this chart is binned base on Age

[aschonfeld]

Once again, it's not that simple:

• For a non-targeted histogram it's easy (and currently displayed) because only displaying one group of bins
• For a targeted histogram it's much harder since we have different bins for each target group

target	bucket	bin	count
A	0	[0, 2)	1
A	1	[2, 3)	2
B	0	[0, 1)	2
B	2	[1, 3)	1

So if you were to show bins for bucket (0) then you would need to show both [0,2) & [0,1) which doesn't sound tough enough but that's an example which only has 2 target groups (A, B).

Side Note: if I'm currently calculating the buckets incorrectly then that is a different story. That would me that there is one set of bins shared amongst all the target groups. So I could display that easily.

[reza1615]

For example for the titanic data.
First we binning the age to 20 buckets after that in each bucket check for survival or not. so the axisX lable should be the bin range
In my opinion, First you should bin after that check the target condition inside each bin
it will be

bucket	target	bin range	items in the bin and target	total items in the bin
0	A	[0, 2)	1	3
0	B	[0, 2)	2	3
1	B	[2, 3)	1	6
1	A	[2, 3)	5	6

My request to have the bin range as lable for axisX

[aschonfeld]

Ok, so this follows my last comment where we perform the binning before we group by target (in your example “survival”) which would give us one set of bins which is definitely doable.

The original code provided did not do this, which is why I was originally saying this was not doable.

[aschonfeld]

added in v1.52.0