I realised that quartile calculated by plotly boxplot were not correct. Here my python code: array = [0,2,3,5,8,9,10] a = np.array(array) print("Q1: " + str(np.percentile(a,25))) print("median: " + str(np.percentile(a,50))) print("Q3: " + str(np.percentile(a,75))) trace = Box ( y= …

This is a rather contentious topic, as it turns out… see eg: http://www.amstat.org/publications/jse/v14n3/langford.html - there are at least 15 different ways you might choose to calculate quartiles! They all generally give quartiles that are close to each other, and I don’t think it’s possible to …

Is it possible to provide a parameter to decide on quartile calculation formula?

This is an old thread, however I am having the exact same issue. Were you able to find either a solution or workaround. I have to recreate someone else’s work in plotly and they have used a different quarterly calculation.

I have been able to recreate the shapes themselves through lines, rectangles and points, so it basically looks and works like I want it to. Though it is missing the ability for everything to display when the mouse is hovered over like in the Boxplot (Which I would really like to find How to have hov…

I understand the various methods to calculate the quartiles - but how can one extract the quartiles computed by Plotly? Perhaps another way around the same question: what existing python functions will calculate quartiles in the exact same way as Plotly does? I tried all possible interpolation meth…

To give an updated answer to @OliverBrace , the box trace now supports manually providing parameters: https://plotly.com/python/box-plots/#box-plot-with-precomputed-quartiles To answer @ahmedhosny , check out this part of the docs for a description of the default box-plot quartile calculation method,…

Many thanks @nicolaskruchten - things are clear now. I guess my confusion came due to the naming. The linear in scipy/numpy is referring to the interpolation method, while the “linear” in Plotly seems to refer to the higher-level quantile calculation method (which in itself also uses linear interpol…

Boxplot quartile seem's wrong

📊 Plotly Python

Steve July 16, 2018, 6:29am 5

Hi, I didn’t really look further, sorry. I just saw this other post that might help you Box Plots - manually supply median and quartiles (performance for alrge sample sizes).

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Box Plot - Q1 and Q3 Calculated Wrong plotly.js	1	1414	September 20, 2019
Change source code for underlying calculation for box plot in R Plotly R	1	836	September 23, 2016
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Box Plots - manually supply median and quartiles (performance for alrge sample sizes) plotly.js	6	14522	May 12, 2022
Finding code that calculates quartiles for box plots 📊 Plotly Python	2	703	June 28, 2023

Boxplot quartile seem's wrong

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