Error- Not enough input arguments when tried to plot data extracted from a table

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N/A 2018-12-27

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编辑： madhan ravi 2018-12-27

Hi,

I tried importing data from excel into a variable of datatype table

from that I extracted two different columns using bewlo commands

Freq= Data{2:121,3}

ExpectedPow= Data{ 2:121,6}

when I tried to plot Freq v/s Expected Pow its throwing an error 'Not enough input arguments'

In the workspace I can see it took Expected pow as 120*1 categorical and Freq as 120*1 string.

Can you please help on how to plot this?

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Walter Roberson 2018-12-27

please show the plot call.

N/A 2018-12-27

plot(Freq,ExpectedPow)

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回答（1 个）

madhan ravi 2018-12-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/437361-error-not-enough-input-arguments-when-tried-to-plot-data-extracted-from-a-table#answer_354097

在 MATLAB Online 中打开

Just a guess:

Freq = str2double(Data{2:121,3});
ExpectedPow = str2double(Data{2:121,6});
plot(Freq,ExpectedPow)

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madhan ravi 2018-12-27

data.xlsx

thaduru shivani's answer moved here for consistency:

Attached the data file

madhan ravi 2018-12-27

编辑：madhan ravi 2018-12-27

在 MATLAB Online 中打开

Here you go!

T=readtable('data.xlsx');
a=T{:,end};
Freq=T{:,3};
ExpectedPower = str2double(strrep(a, '''', ''));
plot(Freq,ExpectedPower)
xlim([18550  19050]) % alter the limits according to your needs
ylim([20 30])

Note: Matlab modifies the variable names a bit in order to make it a valid name.

Not a surpise that you will get a graph with horizontal line because the y values are constant (only 2 points are there in the file).

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