How can I cancel coloumns of an array/table using a user prompt and then plot the data?

Hey Everyone,

I have several data points. So basically i exported my data in excel sheets. I have 33 columns, and 30.000+rows. (i could not attach it to this question).

I want to use the last 720 points only. I managed to create a code for certain channels.

But I would like to have a user input,asking which channels the person want to use. Eg. 1,2,3 out of the 15 channels available, and then import those in a separate array and plot them in a scatter graph. But i don`t know how to create a code that allows it to be any number of channels and then plot them as well on the same graph. I have attached what I have already.

The time coloumns I want to cancel and the date coloumn too.

I dont know if i managed to ask this question in a sensible way. So basicaly i would like to get a user input . Eg. "which channels do you want to use?"

User: "1,2,6" or "1,14"

and then the program save those in a separate array and then plots the points the average of the selected coloumns on the same scatter graph. Thank you for all the help!

Answer 1

[Anmol Dhiman]

As per my understanding of the attached code, to get multiple values in array, use ‘[ ]’ while entering the inputs using prompt as shown below.

prompt = 'Enter the values\n';
x = input(prompt);
x = unique(x); % to store unique values
disp(x)


% OutPut 
Enter the values
[1 1 3 4]
   1 3 4

To plot all the channels simultaneously, try the following in your code

   x = -2:0;
plot(T.CH_14);
xlim([-2 0])
ylim([-0.4 0.4])
hold on % To store scatter plots simultaneously
for i =1: numel(x)
        p = x(i);
        if p>1 && p<=14 % check if p lies in the range of the channels
            % write the if statements here from measurement_reader.m
        end
end