Names on x-axis in the excel file

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muhammad choudhry
muhammad choudhry 2022-9-13
评论： muhammad choudhry 2022-9-13
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.
  2 个评论
Ankit
Ankit 2022-9-13
You can only plot numeric data. But x label you can change with the help of xTickLabels
set(gca, 'xTickLabels', XlabelStr);
muhammad choudhry
muhammad choudhry 2022-9-13
编辑：muhammad choudhry 2022-9-13
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.

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采纳的回答

Walter Roberson
Walter Roberson 2022-9-13
plot( categorical(names), values)

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