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[求助]
matlab 多峰高斯拟合
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各位大神，我有一份pgm文件，通过importdata转成数据进行分析 但是我现在只拟合出一个高斯图像，怎么才能在我的程序基础上编译多个拟合呢？ 现给出我的程序和图像 function [ OutArr ] = Graph( NameFile, PlotOut, Angl) InputVar = nargin; DAT=importdata(NameFile); if (InputVar>2) Angle = Angl; else Angle = 0; end DAT = imrotate(DAT, Angle, 'nearest'); IMG=medfilt2(DAT,[3,3]); [md, nd] = size(IMG); disp({'M=' ,md , 'N=', nd}); Noise = mean(IMG(1:40)); i=0:nd-1; X2D=i; if (InputVar >1)&(PlotOut == 'Y') Hendl=figure; imagesc(IMG); end [Max, INmax] = max(IMG); [Max, IMmax] = max(Max); Nmax = INmax(IMmax); disp({'Nmax = ', Nmax; 'Mmax = ', IMmax}); Top=Nmax+20; Bottom=Nmax-20; Y2D(i+1)=mean(IMG(Bottom:Top,i+1)); Y2D = Y2D-Noise; Y2D = Y2D/max(Y2D); gaussEqn = 'a*exp(-((x-b)/c)^2)+d'; startPoints = [1, IMmax, 1, 0]; f = fit(X2D', Y2D', gaussEqn, 'Start', startPoints); FitGaussD = f(X2D); Cint = confint(f, 0.95); OutArr = [f.c; Cint(:,3)]; disp({'averge = ', f.b; 'Sigma = ', f.c}); if (InputVar >1)&(PlotOut == 'Y') Hendl = figure; ax = gca; ax.XTickMode = 'manual'; ax.XTick = 0:25:nd; ax.XLim = [0, nd]; ax.YTickMode = 'manual'; ax.YTick = 0:0.1:1; ax.YLim = [0, 1]; hold on; plot(X2D, Y2D, ':', 'LineWidth', 2); plot(X2D, FitGaussD, 'r', 'LineWidth', 2); legend('Экспериментальные данные','Аппроксимация'); Pred = predint(f,X2D,0.95,'functional','on'); strmax = {['center of mass = ', num2str(f.b, 3)], ['{\sigma} = ', num2str(f.c, 5)]}; text(f.b, 0.2,... strmax,'HorizontalAlignment','center', 'FontSize',14); xlabel('vertical axis pixel', 'FontSize',12,'FontWeight','bold'); ylabel('intensity', 'FontSize',12,'FontWeight','bold'); grid on; hold off; end  屏幕快照 2016-06-17 下午4.52.41.png |
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2楼2016-10-10 17:35:28
3楼2016-10-10 17:35:38
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