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Here is a method besed on CIE1931 system: o[aIQ|G
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1) Try to find the intersection point of CIE1931 standrad curve and the following line: bKQ_{cR
y=k*(x-0.3333) + 0.3333 V|)nUsU
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k=(yo-0.3333)/(xo-0.3333) and (xo,yo) is the known color coordintae point. s&M#]8x;x
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2) the wavelength of the intersection point will be the dominant wave to be determined. _-z;
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If you need further help, I can share an Excel file. WDF6.i ?
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Let me know how thing's going. R'$1,ie
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Hope helpful. '5\?l:z
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Mang