1 Creating a linear array:\\

     1 \textbf{Loading data from files}

     2 {\ex \lstinline|    x = linspace(0, 2*pi, 50)|}

     4 Plotting two variables:\\

     3 \lstinline|loadtxt('filename')| returns the columns of file in one

     5 {\ex \lstinline|    plot(x, sin(x))|}

     4 sequence. 

     7 Plotting two lists of equal length x, y:\\

     6 \lstinline|x, y = loadtxt('filename', unpack=True)| to obtain a file

     8 {\ex \lstinline|    plot(x, y)|}

     7 with 2 columns in separate sequences. 

     8 

     9 \lstinline|loadtxt('filename', delimiter=';')|, if the file has

    10 columns separated by ';' instead of spaces/tabs. 

    11 

    12