hi, guys, still pretty new whole arduino , programming thing, anyways background: i've got mass-air-flow sensor, puts out 0-5v signal depending on rate of air flowing through it. has non-linear response, requiring use of array convert voltage kg/hr flow. i've setup so: code: [select] int maft[20]={3,11,20,45,83,113,190,280,380,520,750,960,1230,1600,1900,2500,3000,3600,4200,5000}; mafv = map(analogread(1),0, 1023, 0, 19); maff = maft[mafv]; //creates kg/hr number later functions use calculations it works enough, towards high end abrupt transitions. wondering how i'd go creating function allows "maff" blend between 2 adjacent maft values, preferably in weighted manner? ex: if remapped adc value "18.5", it'd average 4200 , 5000 together. if value 18.75, it'd blend 75% of 5000 25% of 4200. (i know map function generates whole integers, trying show example of i'm trying do) if aren't in hurry use floating-p...