search for: mblm

Hello, I am working on a simple non-parametric (Theil) regression function and and am following Hollander and Wolfe 1999 text. I would like some help making my function faster. I have compared with pre-packaged version from "MBLM", which isnt very fast either, but it appears mine is faster with N = 1000 (see results below). I plan on running this function repeatedly, and I generally have data lengths of ~ N = 6000 or more. # My function following Hollander and Wolfe text, Chapter 9 np.lm <-function(dat, X, Y, .....

...one know what is the problem here. i get warning messages about wilcox.test is not able to do calculations of exact p-values with ties and zeroes, but i do not expect the estimates and theire ci's to be effected by this... i'd be glad if someone could give advise, greetings, kay library(mblm) y<-c(1.41421356237310, 2, 2.44948974278318, 0, 1.41421356237310, 2, 0, 1.41421356237310, 1.41421356237310, 1.73205080756888, 2, 1.41421356237310, 2.44948974278318, 1, 1.41421356237310, 3.16227766016838, 0, 1.41421356237310, 1.41421356237310, 1.41421356237310, 1, 1, 3, 1, 0) x<-c(1.7320...

Hello, I am analyzing some climate time series data using the Mann Kendall package and was wondering if there was a way to calculate the trend using Sen's nonparametric estimator slope in R? Thank you in advance, Barry _________________________ Barry Baker, Ph.D. Global Climate Change Initiative The Nature Conservancy 2424 Spruce St., Suite 100 Boulder, CO 80302 Tel: (303)-541-0322 Fax:

I haven't seen this cryptic warning before: > update.views('Robust') Warning message: In update.views("Robust") : The following packages are not available: covRobust, distr, FRB, MASS, mblm, multinomRob, mvoutlier, quantreg, RandVar, rgam, RobAStBase, robfilter, RobLox, RobRex, robust, RobustAFT, robustbase, ROptEst, ROptRegTS, rrcov, sandwich, wle > library(covRobust) > It is puzzling because — as the second command shows — the package covRobust is installed. Here is my >...

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Hello, I have a series of questions that I hope will be simple to answer. Basically I would like a code to do the following so that I can compute the distribution free test for the slope of a postulated regression line (Theil test). As I am testing the null hypothesis that slope = 0 against the general alternative the slope does not equal 0, it should be pretty straight-forward. I have a data

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