Hi, I have generated an app in Guide which uses three different axis to show three different fit models for the same dataset (x,y). I ma trying now to recreate the same code with App design. The functions I am using are the same and the dataset is imported from Excel files. the problem I am facing is that in App Designer I can't plot x, y and the fit results as I do in GUIDE. Not sure if I am doing something wrong or simply is not possible. The code is as follows:
app.x = data(:,1);app.x(isnan(app.x))=[];app.y = data(:,2);app.y(isnan(app.y))= [];ylog = log((min(app.y)-app.y)+0.01);mdl = polyfit(app.x,ylog,1);b = mdl(:,1);a = -min(app.y);c = max(app.y);ft =fittype('a*exp(-b*x)+c', 'independent', 'x', 'dependent', 'y');opts =fitoptions ('Method', 'NonlinearLeastSquare');opts.display = 'Off';opts.StartPoint = [a b c];opts.MaxFunEvals = 1200;opts.MaxIter = 800;[res, gof ] = fit( app.x, app.y, ft, opts);plot(app.UIAxes, app.x, app.y, 'ro')eq = ['y= ',num2str(res.a), '*exp(-' num2str(res.b) '*RR)+ ' num2str(res.c)];app.Label3.Text = eq;app.Label4.Text = ['a = ',num2str(res.a)];app.Label5.Text = ['b =- ',num2str(res.b)];app.Label6.Text = ['Rsquare = ',num2str(gof.rsquare)];
if I try to plot res, the error I get is : Non-numeric data is not supported in 'UIAxes'
Any help would be much appreciated
Best Regards Marcello
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