Plotting multiple graphs in one figure
1 view (last 30 days)
Show older comments
amy gravenstein
on 25 Feb 2020
Commented: amy gravenstein
on 5 Mar 2020
Hello, I am new to matlab and have written a code to create a custom fit for data. I am hoping to plot multiple data sets with this fit in one figure. Currently, this code runs but it creates an individual plot for each data set, which is not what I want. Also, I am having difficulty with the legend formatting. I want to make each line a different color and label as y1,y2,y3... but what I have been currently doing is not working. Thank you.
%% create figure for each data set
w={}; %to collect coefficient values
y=Y(:,1);
hold all
for i=1:1:u %where u is the final column of y values
y=Y(:,i);
[xData, yData] = prepareCurveData( X, y );
ft = fittype( 'a*exp(-b*x)', 'independent', 'x', 'dependent', 'y' );
opts = fitoptions( 'Method', 'NonlinearLeastSquares' );
opts.Display = 'Off';
opts.StartPoint = [0.893783889527977 0.298767974365371];
% Plot fit with data.
figure( 'Name', ['y',sprintf('%d',i)] );
% Fit model to data.
[fitresult{i}, gof(i)] = fit( xData, yData, ft, opts );
disp(fitresult)
hold all % from here downwards is where I find difficulty plotting correctly
for j=1:1:u
h = plot( fitresult{i}, xData, yData);
legendInfo{i}=[num2str(i),'=y'];
legend(legendInfo);
v =coeffvalues(fitresult{i});
w =[w v];
end
hold off
% Label axes
xlabel X
ylabel y_i
grid on
end
hold off
2 Comments
Accepted Answer
Jalaj Gambhir
on 2 Mar 2020
Hi,
The problem is specifying creation of a figure inside the outer for loop. You can declare it outside, specifying a uniform title (because you want a single figure), and removing the first 'hold off' command (just outside the inner for loop)
Hope this helps!
More Answers (0)
See Also
Categories
Find more on Interpolation in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!