How to superimpose multiple images ?

I have got the following code which generates a number of images. I want to superimpose all the images that are generated from the loop. Can someone please help?

% 2D Plot Code

x = 1:44;

y = 1:44;

set(0,'defaultFigureVisible','off')

for i = 1:10

a = xlsread('JREF P1 air.xlsx',strcat('CO',int2str(46*i+3),':','EF',int2str(46*i+3)));
[xData, yData] = prepareCurveData( x, a );

ft = 'poly9';

[fitresult, gof] = fit( xData, yData, ft, 'Normalize', 'on' );

figure;

h = plot( fitresult,'m' );

title('Air Injection Pressure');

xlabel('X-Direction','FontSize',10);

ylabel('Pressure (kPa)','FontSize',10);

grid on;

axis([1 44 -5 60]);

set(gca,'TickDir','out');

grid off;

view(0,90);

fname = sprintf('2D %d.png',i);

fullFileName = fullfile('\\2D Plots',fname);

saveas(gcf,fullFileName);

end

Answer 1

[Walter Roberson]

I would suggest that it would be easier to save the fitting results and plot them all in one plot.

Inside your loop,

savedfits{i} = fitresult;

Then after your loop,

for i = 1 : 10
  plot(savedfits{i});
  L{i} = sprintf('file #%d', i);
  hold on
end
legend(L);

title('Air Injection Pressure');
xlabel('X-Direction','FontSize',10);
ylabel('Pressure (kPa)','FontSize',10);
grid on;
axis([1 44 -5 60]);
set(gca,'TickDir','out');
grid off;
view(0,90);

[Jasnoor Singh]

Hi Walter,

I tried to use this but it gives the following error:

Error using legend>process_inputs (line 503) Cell array argument must be a cell array of strings.

Error in legend>make_legend (line 296) [orient,location,position,children,listen,strings,propargs] = process_inputs(ha,argin); %#ok

Error in legend (line 250) [h,msg] = make_legend(ha,args(arg:end),version);

[Walter Roberson]

Please show what you are passing in to legend() and how you are constructing it.