search for: counts2

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2010 Feb 05
1
Appending results via for loop
...to assign the size of the dataframe beforehand, or can it be dynamic? I've read the help files and the mailing lists, but I think I am not wording my question properly to find the right answers, so I'm opting for this instead : ) Here's my code: window <- 50 size <- 0 if (length(counts2$Count)<length(counts1$Count)) { size <-length(counts2$Count) } else { size <- length(counts1$Count) } a <- 0 b <- 0 alpha <- .05 n <- window pval <- qchisq((1-(alpha / n)), 1) results <- c(seq(1,size,window)) loop <- 1 for (i in seq(1,size,window)) { a <- i b &lt...
2010 Feb 09
2
Double Integral Minimization Problem
...869 63.883 44.524 31.918 23.500 17.877 13.915 11.032 8.881 7.245 5.978 4.972 4.175112) countserr=c(80.085 12.181 4.247 3.148 1.963 1.279 0.448 0.242 0.097 0.055 0.034 0.022 0.015 0.011 0.0082 0.006 0.0043) intensity=function(x,counts0,index,radius_eff){ thita=x[1] radiusb=x[2] counts2=(1-ellip)*(vita-1)/(pi*alpha^2)*counts0*radiusb*exp(-(2*index-0.324)*(radiusb/radius_eff)^(1/index))*(1+(((majaxis_pix^2)+(radiusb^2)-2*majaxis_pix*radiusb*cos(-thita)+(ellip^2-2*ellip)*((radiusb*sin(thita))^2))/(alpha^2)))^(-vita) return(counts2) } sersic=function(p) { counts0=p[1] index=p[2...