legend plotting help with for loop

hi everyone, i have the code below which works fine and plots the data i need, however the legend note only states the final loop input and shows it next to the line colour red, is there any way i can have the legend to show the 3 different line types i need thanks kyle

for i = 1 : k(1)

      %loads internal forces for plotting
  file_name = sprintf('internalforce_%d',i);
  variable = load(file_name,'int_force');

      %loads deflection for plotting
  filetwo_name = sprintf('data_%d',i);
  variabletwo = load(filetwo_name,'deflection');

%create a colour array for use in altering plot colours

mark = {'*-r','o-g','^-b','*-k','*-c','*-r'};

%plots the Force displacment graphs on one plot

plot(-variabletwo.deflection,-variable.int_force,mark{i});legend(filetwo_name)

%sets titles and axis for graph
xlabel(['OX axis ' lengthunits]);ylabel(['OY axis ' axialunits]);
title('Force Displacment Graph '); grid on

end

Answer 1

[Paulo Silva]

Something similar to this:

hold on
mark = {'*-r','o-g','^-b','*-k','*-c','*-r'};
for i = 1 : 6
      %loads internal forces for plotting
  %file_name = sprintf('internalforce_%d',i);
  %variable = load(file_name,'int_force');
      %loads deflection for plotting
  %filetwo_name = sprintf('data_%d',i);
  %variabletwo = load(filetwo_name,'deflection');
%create a colour array for use in altering plot colours

%plots the Force displacment graphs on one plot
p(i)=plot(i,i,mark{i})%legend(filetwo_name)
%sets titles and axis for graph
%xlabel(['OX axis ' lengthunits]);ylabel(['OY axis ' axialunits]);
%title('Force Displacment Graph '); grid on
end
legend(p,mark)