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Names on x-axis in the excel file

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muhammad choudhry ，2022-9-13

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https://ww2.mathworks.cn/matlabcentral/answers/1803930-names-on-x-axis-in-the-excel-file

评论： muhammad choudhry ，2022-9-13

采纳的回答： Walter Roberson

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.

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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 2022-9-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1803930-names-on-x-axis-in-the-excel-file#answer_1052320

plot( categorical(names), values)

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muhammad choudhry 2022-9-13

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

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