How to Loop to plot histogram and line plot?

Hello I want to use loop to plot histogram and line plot. I am getting error

Temp=readtable('inst0 138.221.155.178 11_19_2020 06_55_37 1.csv')

for i=4:8;k=1:2
        subplot(1,2,k)
        plot(Temp(:,3),Temp(:,i)) 
end
for p= 4:7
    subplot(2,2,k)
    histogram(Temp.[p])
end

Answer 1

[Constantino Carlos Reyes-Aldasoro]

The following is not clear and most probably your error:

for i=4:8;k=1:2
        subplot(1,2,k)
        plot(Temp(:,3),Temp(:i)) 
end

Are you trying to have 2 loops there? What your code is doing is the following:

for i=4:8
    k=1:2
    subplot(1,2,k)
    plot(Temp(:,3),Temp(:i)) 
end

It runs a loop on i, then it assigns k a range between 1 and 2, then calls a subplot with the value of k, which prompts an error as you should have a single value.

Perhaps you need the following:

for i=4:8
    for    k=1:2
        subplot(1,2,k)
        plot(Temp(:,3),Temp(:i))
    end
end

[Arshey Dhangekar]

I want plot histogram using loop with title and legend

for k = 1:4
    subplot(2,2,k)
    histogram(Temp(:i))
    
    xlabel('')
    ylabel('')
end

[Constantino Carlos Reyes-Aldasoro]

you need to be clear on how you are using your variables, in the above, k is looping 1 to 4 and this is addressing the subplots 1 to 4, that is fine, but then

histogram(Temp(:i))

has 2 errors, i as a variable is not changing so you will be plotting the same and

Temp(:i) 

does not work, that may be correct in Python but in Matlab it should be either (:,i) where you take all the rows and column i or if you want to take only part of a range it would be 1:i or i:end.

[Arshey Dhangekar]

I am confused still could explain it in code ,Temp(:i)) will not work I want to plot from column 3 to 7 histrogram plot

d1=Temp(:,3) to d4=Temp(:,7)

for i=4:8
    for    k=1:2
        subplot(1,2,k)
        plot(Temp(:,3),Temp(:i))
    end
end

[Constantino Carlos Reyes-Aldasoro]

notice the difference between Temp(:,3) and Temp(:3) or as it would be Temp(:,i) and Temp(:i)

[Arshey Dhangekar]

I defined Temp as. I am trying to use your method I did not get histogram for column 4 to 7

Temp=readtable('inst0 138.221.155.178 11_19_2020 06_55_37 1.csv')

[Constantino Carlos Reyes-Aldasoro]

I have not tried to define any method, just to point out your error here:

plot(Temp(:,3),Temp(:i))

This will not work, it requires a comma between the : and the i like this

plot(Temp(:,3),Temp(:,i))