Calculating Status T Density from Spectral Data

[davesmith04]

Hi there, folks. I've been looking high and low for how to calculate Status T Density from spectral data. I've gotten as far as the formula below, but not the weighting factors.

Density = -Log10 [ Σ (Wλ x Rλ)/100 ] where Wλ is the spectral weighting function at wavelength λ and Rλ is the spectral reflectance at wavelength λ

Can anybody help me out? Thanks in advance!

 

[gordo]

You might find what you're looking for here:
http://www.brucelindbloom.com/Calc.html

The intro explains the functions of the calculators (which includes spectral to density) and contains this link to the spreadsheets:
http://www.brucelindbloom.com/SpectC...eadsheets.html

 

[davesmith04]

Thanks Gordo. That's the first site I go to for such questions, ha. He does have the calculation in a spreadsheet, but it's all locked down. I was hoping to program the formula into my own spreadsheet for speedy reporting on large data sets.

 

[Bret Hesler]

I have a spreadsheet with the weighting factors and calculations in it. PM me, and I will email it to you.

Bret