Poly <n>

Description Calculates the best fit nth order polynomial, plots the result and prints the coefficients and rms error.   Defines the best fit as having the smallest rms error. The polynomial coefficients are output along with the error. The polynomial is then plotted. Hot Key  none Script previous = current poly current <n> print rms(previous-current) Example Open scope and paste this script into the command window. Then press <Ctrl + R> to plot a square wave Select the Calculator menu "Functions//Filters/Poly 7 to check it out. numpoints = 500 time = (vector(numpoints)/(numpoints-1)*1m) newplot pulseplot time setplot pulseplot setunits time sec y = 2*pulse(500u) - 1 plot y