Names on x-axis in the excel file

Hi,

I am having trouble in plotting, I want to plot the graph where x-axis are names and y-axis numbers but I am getting the error below. what is solution for that.

Code:

close all; clear all; clc;
file = ["C:\Users\Alphagamma\alphagamma.xlsx];
    for i = 1:numel(file)
    a=readtable(file(i));
    names = a{:,3}
    values = a{:,5}
    end
    figure()
    plot (names,values)

Error:

>> figure()

plot (names,values)

Error using plot

Invalid data argument.

[Ankit]

You can only plot numeric data. But x label you can change with the help of xTickLabels

set(gca, 'xTickLabels', XlabelStr);

[muhammad choudhry]

Hi,

what am I doing wrong here I added the piece of code you mentioned!

is there no way it will read the names from the excel ?

Code:

set(gca, 'xTickLabels', names);

figure()

plot (names,values)

Error:

plot (names,values)

Error using plot

Invalid data argument.

Answer 1

[Walter Roberson]

plot( categorical(names), values)

[muhammad choudhry]

that's it, sweet short and simple! Thanks alot.