how to draw bar plot for histogram values?

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Ad 2017-7-29
评论： Ad 2017-7-31
I have computed the precision,recall and f measure for the algorithm. I want to draw bar plot for the three values. Precision=1*256,recall=1*256,F-measure=1*256. I am getting figure like this.
But, I want something like this and I have attached the text file
I have written the code
data = [P_1,R_1,f_1,
P_2,R_2,f_2,
P_3,R_3,f_3
P_4,R_4,f_4];
b=bar(data);
set(b(1),'FaceColor','b');
set(b(2),'FaceColor','r');
set(b(3),'FaceColor','y');
grid on;
set(gca,'XTickLabel',{'DEMO1','DEMO2','DEMO3','DEMO4'});
legend('Precision','Recall','F_\beta');
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the cyclist
the cyclist 2017-7-30
I stupidly overlooked a very basic problem with what you are doing.
Your data matrix has 12*256 = 3,072 values. But the bar chart you want only plots 18 values.
What is it that you actually want to plot?
Ad
Ad 2017-7-31
Thank you so much for pointing out the mistake. I got it. I want to calculate the mean and then plot it.once again thank you

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回答（1 个）

the cyclist
the cyclist 2017-7-29
My guess is that you are grouping the wrong dimension. Try using the transpose
bar(data')

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