specpeak

The specpeak function determines the spectral peak wavelength for any given spectral power distribution (SPD).

See also: speccentroid

Usage:

sp = speccentroid(lam,spec)

Where:

Parameter	Description
sp	Returns the spectral peak wavelength.
lam	Specifies the wavelengths, vector or matrix.
spec	Specifies the spectral power distribution(s), vector or matrix.

Examples:

Determine spectral peak of the V(\lambda) curve:

lam = 380:780;
VL = ciespec(lam,'VL');
sp = specpeak(lam,VL)

% plotting the result
plot(lam,VL)
grid minor
hold on
plot([sp sp],[0 1],'k--')
xlabel('\lambda in nm')
ylabel('relative SPD')
hold off

See also: ciespec

Result:

sp = 555

Determine the spectral peaks of the α-opic functions:

lam = 380:780;
spec = ciespec(lam,'aopic');
aopicpeak = specpeak(lam,spec)

See also: ciespec

Result:

aopicpeak = 

   448
   541
   569
   507
   490

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