search for: rootsolve

...a simple linear equation. I define the function, prove the function and a call to the function works. When I try to use uniroot to solve the equation I get an error message, Error in yfu n(x,10,20) : object 'x' not found. I hope someone can tell we how I can fix the problem if(!require(rootSolve)){install.packages("rootSolve")} library(rootSolve) # Define the function yfun <- function(x,diffMean,diffSE) ((abs(diffMean)-x)/diffSE) # Prove the function and a call to the function work yfun(10,100,10) # use uniroot to find a solution to the # function in the range -...

Hello folks, I am having a problem installing pbatR package. (My R version is 2.8.1.) As I execute a command > install.packages(lib='/usr/local/apps/R-2.8.1/lib64/R/library', "pbatR") it detects lack of rootSolve package and attempts to install it. But cannot seem to compile it, and the rest is aborted. Any hint as to what I can do? Thank you in advance for your help. Tena Sakai tsakai at gallo.ucsf.edu Here's the detail: > install.packages(lib='/usr/local/apps/R-2.8.1/lib64/R/library'...

...I define the function, prove the function and a call to the function works. When I try to use uniroot to solve the equation I get an error message, > Error in yfu n(x,10,20) : object 'x' not found. > > I hope someone can tell we how I can fix the problem > > if(!require(rootSolve)){install.packages("rootSolve")} > library(rootSolve) > > # Define the function > yfun <- function(x,diffMean,diffSE) ((abs(diffMean)-x)/diffSE) > # Prove the function and a call to the function work > yfun(10,100,10) > # use uniroot to find a so...

Hi, We have several projects in the center done by researchers over years in Fortran, there are copy right issues etc to prevent us from giving away the source codes, but a lot of social scientist are interested to use the program. We tried to use dlls to make plugins (available in our website) in various statistics platforms (SAS, STATA and R) to make it available to general public. We used

Is there a way to find all roots of a polynomial equation? Lets say x^5+a*x^4+b*x^3+c*x^2+d*x+e=0 how to find its all roots? [[alternative HTML version deleted]]

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Hola a tod en s. Realizando el calculo de encontrar la raíz quinta de -0.5, la cual dígito de la siguiente manera (-0.5)^(1/5) El resultado que me arroja R es NaN. Averiguando un poco entre las ayuda de las funciones aritméticas encuentro el siguiente comentario Users are sometimes surprised by the value returned, for example why (-8)^(1/3) is NaN. For double inputs, R makes use of IEC 60559

CRAN (and crantastic) updates this week New packages ------------ * Bergm (1.0) Alberto Caimo http://crantastic.org/packages/Bergm Functions implementing Bayesian estimation for exponential random graph models via exchange algorithm Updated packages ---------------- lmtest (0.9-26), logcondens (1.3.5), MTSKNN (0.0-4), pmml (1.2.21), r2lUniv (0.9.4), rattle (2.5.11), rgdal (0.6-23),