Histfit : how to set minimum and maximum value for clusters?

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Ivan Mich 2021-2-15

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https://ww2.mathworks.cn/matlabcentral/answers/745972-histfit-how-to-set-minimum-and-maximum-value-for-clusters

评论： Ivan Mich 2021-2-17

Hello,

I want to create a histogram. I want my histogram to start from a specific minimum value and to end to a specific maximum value. I would like to set this values by default let's say. How to make it?

I use the following commands:

H=histfit(x,10,'normal'); %creates 10 clusters, I want my clusters to start from xmin=1, and end to xmax=10, by 0.5 step
x=d1.data(:,4); %x is my data

could you help me?

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Answer 1

KALYAN ACHARJYA 2021-2-16

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https://ww2.mathworks.cn/matlabcentral/answers/745972-histfit-how-to-set-minimum-and-maximum-value-for-clusters#answer_624647

在 MATLAB Online 中打开

Is this?

Get the minimum and maximum value from the x data, considering x as a 1D array

x_min=min(x);
x_max=max(x);

Next you can modify the x data as per x_min and x_max, the remaining x data without minimum x and maximum x

x(x==x_min | x==x_max)=[]

Next plot the hist

H=histfit(x,10,'normal');

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Ivan Mich 2021-2-17

在 MATLAB Online 中打开

look, I want to fit a histogram to some data using predefined bins. All my data points are between 1 and 10, so I want the bins to start from xmin=1, and end at xmax=10, with a step of 0.5.

I use the following commands:

x = d1.data(:,4); % x is my data
H = histfit(x,10,'normal'); % fits a histogram using 10 bins 

However when doing the above, bins are determined automatically per dataset and do not correspond to the edges I want. How can I ensure that the same bin edges are used for all datasets?

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