How to reduce the line of the codes in the code given!

Hi,

I am plotting 3 sets of data on each graph and plotting 4 different graphs by reading the columns from the csv files. but seems like my code is way too long. I am stuck. Can any one have a go and reduce the amount of lines in my code:

CODE:

files = { 'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_DesignPoint\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vr3i20t.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_KickBack\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs3ia8s.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_flushflow\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs5mz18.000010.csv'};
for i = 1:numel(files)
    a = readtable(files{i});
    X = a{:,2};
    Y = a{:,13};
    figure(1)
    plot(X,Y,'*');
    hold on
    %Spacing and griding of the plot 
    xlim([0 350])
    ylim([0 2])
    hold on
    grid on
    
end


for i = 1:numel(files)
    a = readtable(files{i});
    X = a{:,16};
    Y = a{:,27};
    figure(2)
    plot(X,Y,'*');
    hold on
    %Spacing and griding of the plot 
    xlim([0 350])
    ylim([0 2])
    hold on
    grid on
    
end



for i = 1:numel(files)
    a = readtable(files{i});
    X = a{:,30};
    Y = a{:,41};
    figure(3)
    plot(X,Y,'*');
    hold on
    %Spacing and griding of the plot 
    xlim([0 350])
    ylim([0 2])
    hold on
    grid on
    
end



for i = 1:numel(files)
    a = readtable(files{i});
    X = a{:,44};
    Y = a{:,55};
    figure(4)
    plot(X,Y,'*');
    hold on
    %Spacing and griding of the plot 
    xlim([0 350])
    ylim([0 2])
    hold on
    grid on
    
end

Answer 1

[Voss]

files = { ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_DesignPoint\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vr3i20t.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_KickBack\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs3ia8s.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_flushflow\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs5mz18.000010.csv'; ...
    };
col = [2 13; 16 27; 30 41; 44 55];
for j = 1:size(col,1)
    for i = 1:numel(files)
        a = readtable(files{i});
        X = a{:,col(j,1)};
        Y = a{:,col(j,2)};
        figure(j)
        plot(X,Y,'*');
        hold on
    end
    %Spacing and griding of the plot 
    xlim([0 350])
    ylim([0 2])
    grid on
end

[Voss]

Or, better, since you only need to readtable() each file once (a few more lines though):

files = { ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_DesignPoint\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vr3i20t.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_KickBack\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs3ia8s.000010.csv'; ...
    'F:\3-PIV_Experimental_Data\Outlet_110\ABCD_flushflow\Profile_Plot\Sheet_D\LSD_DataoverDistance.6vs5mz18.000010.csv'; ...
    };
col = [2 13; 16 27; 30 41; 44 55];
for i = 1:numel(files)
    a = readtable(files{i});
    for j = 1:size(col,1)
        X = a{:,col(j,1)};
        Y = a{:,col(j,2)};
        figure(j)
        plot(X,Y,'*');
        hold on
    end
end
for j = 1:size(col,1)
    %Spacing and griding of the plot 
    figure(j)
    xlim([0 350])
    ylim([0 2])
    grid on
end

Answer 2

[William Rose]

@muhammad choudhry,

You read each of the three files four separate times. Read them in once at the beginning, to tables a1, a2, a3. Keep them in memory. Assuming that you have done that, then you could replace the first for loop with the following (delete the for loop entirely):

figure;
plot(a1{:,2},a1{:,13},'r*',a2{:,2},a2{:,13},'go',a3{:,2},a3{:,13},'b^');
xlim([0 350]), ylim([0 2]), grid on
legend('a1','a2','a3');

Do likewise for the remaining three for loops.