How to Calculate The Full Wave Half Maximum.

Hi Everyone, anyone know how to write command to calculate the Full Wave Half Maxiumum(FWHM) on my data. As shown in figure attached.

[KSSV]

Better attach your data

[mohd akmal masud]

as attacehd

Answer 1

[KSSV]

Let (n.counts) be your data.

[max_counts,idx] = max(counts) ; 
half_max_counts = max_counts/2 ; 
idx = knnsearch(counts,half_max_counts) ; 
FWHM = abs(diff(n(idx)))

You can inerpolate the data for better accuracy.

[mohd akmal masud]

thank you sir. i try first.