XPS data gaussian multipeak fit

Question

Babu Sankhi 2021-5-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/819570-xps-data-gaussian-multipeak-fit

回答： Mohsen Tamtaji 2021-11-23

Untitled picture.png

Hello all,

I tried for the gaussion fit at the particular peak for the XPS data . But it didnt work it just give me straight line !! can you please help me how can I do that? The codes I tried are pasted below.

Thank you

o1s1=importdata("Co2p_002.txt");
 
 plot (o1s1(:,1),o1s1(:,2));   
   x= o1s1(:,1);
   fgh=flip(x);
   y=o1s1(:,2)-mean(o1s1(:,2));
   startPoints = [1.5 900 10 0.6]
 
 gaussEqn = 'a*exp(-((x-b)/c)^2)+d';
  f1 = fit(x,y,gaussEqn,'Start', startPoints);
 
 
plot(f1,(x),(y));
set ( gca, 'xdir', 'reverse' )
xlim([770 790])