How to plot feature importance on x-axis and variable names on y-axis?

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Devendra 2023-8-8

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评论： Devendra 2023-8-9

I wish to plot variables names on y-axis and feature importance on x-axis in Random Forest Regression. Also the variables on y-axis should be in descending order according to their feature importance on x-axis. I request you to kindly suggest me how to do it. D S Chahar

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Devendra 2023-8-8

XGBoost-Feature-Importance-Bar-Chart 3.png

I want to generate the feature importance plot similar to attached image. I request you all to please suggest me how to create it in matlab. Many thanks in advance.

Devendra

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Answer 1

dpb 2023-8-8

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编辑：dpb 2023-8-8

在 MATLAB Online 中打开

See barh and particularly <the example>. Use the second optional output from sort to get the order of the variables when you sort them to put in descending order to use with xticklabels to label the y-axis tick values. Or, you could convert to categorical variable type for the x-value (as ordinal to keep the sorted order) and will get the labels automagically.

nfacts=8;

features="f"+[0:nfacts-1].';

F=randi([20,125],size(features));

[F,ix]=sort(F);

hB=barh(F);

yticklabels(features(ix))

xlabel('F Score'), ylabel('Features')

hTxt=text(hB.YEndPoints,hB.XEndPoints," "+string(F),'horizontal','left','vertical','middle');

NOTA BENE: with the horiontal bar, the x,y postions for text() are y,x on the plot axes nomenclature; that's easy to confuse and the text doesn't show up or is somewhere bizarre.