search for: fadikar

...946 $value [1] 492.5353 $counts function gradient 130 19 $convergence [1] 0 $message NULL Warning messages: 1: In log(q^2 + 2 * q * r) : NaNs produced 2: In log(q) : NaNs produced 3: In log(q^2 + 2 * q * r) : NaNs produced 4: In log(q) : NaNs produced please help ... -- Arindam Fadikar M.Stat Indian Statistical Institute. New Delhi, India [[alternative HTML version deleted]]

...lt;- iris$Sepal.Length[1:50]/iris$Sepal.Width[1:50] y <- iris$Petal.Length[1:50]/iris$Petal.Width[1:50] I want to check whether (x,y) follows a bivariate normal distribution or not, using density plot or scatter plot. Is it possible to plot a bivariate density in R. I cant find any. Arindam Fadikar M.Stat Indian Statistical Institute. New Delhi, India [[alternative HTML version deleted]]

Dear users, How to get a symmetric square root of a positive definite matrix? I have tried using spectral decomposition, but some eigen values come out to be complex. Is there any function in R that can give the symmetric square root of a pd matrix? -- Arindam Fadikar M.Stat Indian Statistical Institute. New Delhi, India [[alternative HTML version deleted]]

...wiki/Frequency_distribution#> Number of students[image: ↓] <http://en.wikipedia.org/wiki/Frequency_distribution#> Cumulative number[image: ↓] <http://en.wikipedia.org/wiki/Frequency_distribution#> 4.5–5.0 feet 25 25 5.0–5.5 feet 35 60 5.5–6 feet 20 80 6.0–6.5 feet 20 100 -- Arindam Fadikar M.Stat Indian Statistical Institute. New Delhi, India [[alternative HTML version deleted]]

Hello Everyone,   Learning about R and its wonderful array of functions. If it's not obvious, I usually try to find out what a function stands for. I think this helps me remember better.   One function that has me stumped is "sink." Can anyone tell me if this stands for something?   Thanks,   Paul         __________________________________________________ [[alternative HTML