similar to: Regarding Performance and Prediction routines of rattle library and XML package

Packages pROC and ROCR both calculate/approximate the Area Under (Receiver Operator) Curve. However the results are different. I am computing a new variable as a predictor for a label. The new variable is a (non-linear) function of a set of input values, and I'm checking how different parameter settings contribute to prediction. All my settings are predictive, but some are better. The AUC i

Hi Graham, Your guess is right. The event loop stuff is handled differently on Windows than on Unix-like OSes. There is a hook, called tcl_do that is hard-coded into the R Windows GUI. It is called whenever the console is idle. RGtk2 is able to hook into that to process GTK+ events. The problem is that the two packages replace each other's handler. So in this case tcltk is blocking GTK+ from

Dear Group I have few errors while installing package rattle from CRAN i do the installing from the local zip files... I am using R 2.4.0 do i have to upgrade to R2.4.1 ? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ utils:::menuInstallLocal() package 'rattle' successfully unpacked and MD5 sums checked updating HTML package descriptions > help(rattle) No

How to make a launcher for Rattle? Regards, Iurie Malai Moldova Pedagogical State University [[alternative HTML version deleted]]

Dear Mr. Bengtsson, Now i am able to work with R-Matlab interface comfortably. Thanks to you. Recently, I came to know that R can be used for data mining as well. I went through the following site for this : http://rattle.togaware.com/ As they have suggested, I have also installed the two packages: > install.packages("RGtk2") > install.packages("rattle")

Hello, I am trying to install and run Rattle on my Dell Laptop and I have Windows 7 OS. The following three commands executed successfully : install.packages("RGtk2") install.packages("rattle") library(rattle) Rattle: Graphical interface for data mining using R. Version 2.5.47 Copyright (c) 2006-2010 Togaware Pty Ltd. Type 'rattle()' to shake, rattle, and roll

Dear all, I was wondering if someone can help me. I am learning SVM for classification in my research with kernlab package. I want to know about classification performance using Area Under Curve (AUC). I know ROCR package can do this job but I found all example in ROCR package have include prediction, for example, ROCR.hiv {ROCR}. My problem is how to produce prediction in SVM and to find

library(rattle) Loading required package: pmml Loading required package: XML Error: package 'XML' could not be loaded In addition: Warning message: In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) : there is no package called 'XML' i have installed glade package >install.packages("RGtk2") > install.packages("rattle")

I use ROCR to plot multiple runs' performance. Using the sample code as example: # plot ROC curves for several cross-validation runs (dotted # in grey), overlaid by the vertical average curve and boxplots # showing the vertical spread around the average. data(ROCR.xval) pred <- prediction(ROCR.xval$predictions, ROCR.xval$labels) perf <- performance(pred,"tpr","fpr")

Hi, there. Suppose I already have sensitivities and specificities. What is the quick R-function to calculate AUC for the ROC plot? There seem to be many R functions to calculate AUC. Thanks. Yulei [[alternative HTML version deleted]]

Dear Group, I have followed the instructions from the link http://datamining.togaware.com/survivor/Installing_GTK.html However i couldn't fix the libatk01.0.0.dll application error Here, i did uninstall R-Gui-2.4.0 then did the fresh installation and still facing the same problem I am using Windows- XP *Please find the following* R version 2.4.0 (2006-10-03) Copyright (C) 2006 The R

Hello Is there an easy way, i.e. a function in a package, to calculate the area under the curve (AUC) for drug serum levels? Thanks for any advice -- Armin Goralczyk, M.D. -- Universit?tsmedizin G?ttingen Abteilung Allgemein- und Viszeralchirurgie Rudolf-Koch-Str. 40 39099 G?ttingen -- Dept. of General Surgery University of G?ttingen G?ttingen, Germany -- http://www.chirurgie-goettingen.de

*Hi, *Does anyone know how can I show an *ROC curve for R-SVM*? I understand in R-SVM we are not optimizing over SVM cost parameter. Any example ROC for R-SVM code or guidance can be really useful. Thanks, Angel. [[alternative HTML version deleted]]

I have just installed rattle on Ubntu 9.04, and R 2.8.1 and get an error message when I try to run it. > library(rattle) > rattle() Error in rattle() : The RGtk2 package did not find libglade installed. Please install it. I have installed libglade2-dev through synaptic, and following suggestion from an earlier thread re-installed RGtk2 using install.packages, and through synaptic. Can

HI Apologies for previously trying to post this question onto the Dev forum. I have recently update my versions of R and related packages. When I try to use rattle the following message appears "Error in .RGtkCall("R_setGObjectProps", obj, value, PACKAGE = "RGtk2") : Invalid property tooltip-text!" I have downloaded and installed the latest available version of

Dear R-philes, I am plotting ROC curves for several cross-validation runs of a classifier (using the function below). In addition to the average AUC, I am interested in obtaining a confidence interval for the average AUC. Is there a straightforward way to do this via the ROCR package? plot_roc_curve <- function(roc.dat, plt.title) { #print(str(vowel.ROC)) pred <-

Hello All, I'm trying to install rattle from source on a AMD64 machine running etch. I have two packages installed from the etch backport (r-cran-rodbc and r-cran-rsprng) but all the rest installed from source. I'm trying to install rattle, but install.packages("rattle", dependencies=TRUE) Tries to install rggobi, which complains about the version of libggobi. Does

I might be missing something but I thought that AUC was a measure for comparing ROC curves, so there is nothing else needed to "compare" them. The larger AUC is the higher correlation of 2 variables compared. No other measures or calculations are needed. Jarek Tuszynski -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On

Rattle won't install properly on my Windows 7 64 bit laptop. Here is what I've tried: I've followed the instructions here: http://rattle.togaware.com/rattle-install-mswindows.html I had R installed already. I downloaded the GTK+ packages, unzipped the 32 bit one into c:\gtkwin32. I put c:\gtkwin32\bin in the system variables PATH. I launched R, installed the rattle package, called

A new version of Rattle (2.1.123), a Gnome-base GUI for data mining, written copmletely in R, and available on GNU/Linux, Unix, Mac OSX, and MS/Windows, has been released to CRAN. There has been quite a lot of activity since the last update, including: Transform: Now include basic imputation of missing values. More to follow. Models: Move to using ada for boosting.