# Graphical User Interface for Rprof() Show graphically the results of profiling R functions by tracking their execution time. package ## Details ||| |:--|:--| |Package:|GUIProfiler| |Type:|Package| |Version:|2.0.1| |Date:|2015-08-23| |License:|GPL| This package mimics the behavior of the Matlab profiler: after the code in a file is executed, it is generated an HTML report. This HTML report includes information on the time spent on each of the lines of the profiled code and hyperlinks to jump across the included functions. The graphical interface makes it easy to identify which are the specific lines that may slow down the code. ## Author(s) Fernando de Villar and Angel Rubio Maintainer: Fernando de Villar ## See Also `RRprofStart`, `RRprofStop`, `RRprofReport`, `Rprof` ## Examples ```r temp<-tempdir() # Definition of two functions normal.solve <- function(A,b) { Output <- solve(crossprod(A), t(A)%*%b) } chol.solve <- function(A,b) { L <- chol(crossprod(A)) Output1 <- backsolve(L, t(A)%*%b, transpose=TRUE) Output2 <- backsolve(L, Output1) } compareMethods <- function() { library(MASS) # Call the functions source(paste(temp,"/normal.solve.R",sep="")) source(paste(temp,"/chol.solve.R",sep="")) # Solving a big system of equations nrows <- 1000 ncols <- 500 A <- matrix(rnorm(nrows*ncols),nrows,ncols) b <- rnorm(nrows) # Testing different possibilities Sol1 <- qr.solve(A,b) # Using QR factorization Sol2 <- coefficients(lm.fit(A,b)) # lm.fit, based on QR but with some overhead Sol3 <- ginv(A) %*% b # Using the pseudoinverse based on SVD Sol4 <- normal.solve(A,b) # Using a function based on the normal equations. Sol5 <- chol.solve(A,b) # Using a function based on the Choleski factorization. } # Dump these functions to three different files dump("normal.solve",file=paste(temp,"/normal.solve.R",sep="")) dump("chol.solve",file=paste(temp,"/chol.solve.R",sep="")) dump("compareMethods",file=paste(temp,"/compareMethods.R",sep="")) source(paste(temp,"/compareMethods.R",sep="")) # Profile the code RRprofStart() compareMethods() RRprofStop() # Uncomment to open the report #RRprofReport() ```

GUIProfiler-package