Removing first row from txt file

Hi everyone,

I have a very simple text file with 2 columns of data I wish to plot. I'm having trouble removing the first row which contains non-number values.

Data example:

txtcol1, txtcol2
4, 107
4, 109
5, 110
5, 111
5, 112

This is what I have so far: (..% to my understanding)

data=('myfile.txt');   %sets variable

readtable(data)  $%displays table

data(1,:) = 0;  %sets first row to zeros

x = data(:,1);  %sets x to column 1
y = data(:,2);  %sets y to column 2
plot(x, y)    %plots

I'm getting this returned:

Error using plot

Invalid first data argument.

Thank you very much

[madhan ravi]

Attach file

[Atsushi Ueno]

I have created 'myfile.txt' file with assamption.

>> read_data = readtable('myfile.txt')
read_data =
  3×2 table
    abc    def
    ___    ___

    3      5  
    4      9  
    3      8  

readtable() returens output as a table. The table can store metadata such as descriptions, variable units, variable names, and row names. How about using the first row's information you are trying to remove...

data = readtable('myfile.txt')  %displays data as table
x = data.abc; % set x to first column of myfile.txt
y = data.def; % set y to second column of myfile.txt
plot(x, y) % plot

Answer 1

[madhan ravi]

data=('myfile.txt');   %sets variable

data = readtable(data)  %displays table

x = data{:,1};  %sets x to column 1
y = data{:,2};  %sets y to column 2
plot(x, y)    %plots

[Stephen Warren]

Thank you very much,

I see my error was not using {} for the matrix