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Hi, is there a way to take a data frame with 100+ columns and large data set to do efficient exploratory analysis in R with pairs? I find using pairs on the whole matrix is slow and the resulting matrix is tiny. Also the variable of interest for me is a binary var Y or N . Is there an efficient way to graphically view many variable relationships that does not look teeny ? I could do

Hi, To pretty print aggregates by various dimensions I needed to add a empty row in output of aggregate. For example. d<-(aggregate(data[,cbind("x")], by=list(data$group1,data$group2), sum)) Group.1 Group.2 x 1 A N 3 2 A Y 2 3 B N 420164905 Is there a way to add an empty

Hi, is there a way to take a dataset and extract numeric columns and create interaction columns from it automatically? For e.g. there are 5 columns of data: A,B,C,D,E. CDE are numeric. Can someone provide code to automatically create more columns such as: 1) C*D, C*E, C*D*E, (C+E)/(D+.01 (to avoid divide by zero), (D+E)/(C+.01 (to avoid divide by zero), (C+D)/(E+.01 (to avoid

I am a novice R user and recently installed Rattle primarily for the decision tree functionality. I immediately run into problems trying to open a .csv file from the "Data" tab. The error message I get in my "R" log window is: Error in if (crv$load.tooltips) loadTooltips() : argument is of length zero Help would be appreciated. Jim Thompson

...averse the rpart tree into if else statement would be helpful. thanks Dhruv Email transmitted across the Internet is normally not protected and may be intercepted and viewed by others. Therefore, you should refrain from sending any confidential or private information via unsecured email to PenFed. We will not ask you to send confidential information to us via email, such as your logon ID, password, account numbers, or Social Security number. We prohibit our employees from sending confidential information to you via email that is not encrypted. The recommended document submission method is...

...Small minds discuss people (_)-(_) ..... Anon ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ------------------------------ Message: 61 Date: Mon, 29 Sep 2008 15:51:30 -0400 From: "Sharma, Dhruv" <Dhruv.Sharma at PenFed.org> Subject: [R] persistence of model in R to a file To: <r-help at r-project.org> Message-ID: <BF3D95EDD37088488ADB82FBBC5689CD0277086E at CHN-EXMBXPR01.pfcuhq.penfed.ads> Content-Type: text/plain Hi, Is there a way to save R models (glm, lm , rpart etc) in a file that b...

...o/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ------------------------------ Message: 60 Date: Mon, 22 Dec 2008 22:44:51 -0500 From: "Sharma, Dhruv" <Dhruv.Sharma at PenFed.org> Subject: [R] sorting regression coefficients by p-value To: <r-help at r-project.org> Message-ID: <BF3D95EDD37088488ADB82FBBC5689CD0193B914 at CHN-EXMBXPR01.pfcuhq.penfed.ads> Content-Type: text/plain Hi, Is there a way to get/extract a matrix of regression variable name,...

...d of R-help Digest, Vol 94, Issue 11 ************************************** Email transmitted across the Internet is normally not protected and may be intercepted and viewed by others. Therefore, you should refrain from sending any confidential or private information via unsecured email to PenFed. We will not ask you to send confidential information to us via email, such as your logon ID, password, account numbers, or Social Security number. We prohibit our employees from sending confidential information to you via email that is not encrypted. The recommended document submission method is...

Hi, In a binary classification dataset is there a way to tune rpart to now allow any false positives. I.e. is there some setting that will enforce no false positives (prior etc)? (and yet Without making the tree pick all 0 or 1 outcome) Dhruv [[alternative HTML version deleted]]

Hi, Is there a way to get/extract a matrix of regression variable name, coefficient, and p values? (for lm and glm; which can be sort by p value?) thanks Dhruv [[alternative HTML version deleted]]

Hi, Is there a way to save R models (glm, lm , rpart etc) in a file that be read in later? I noticed models take up space. by space them off and removing them from memory it seems that would be useful. Also why do the models keep a copy of all columns in the original data set even those columns are not in the model. E.g. if I build a model on columns A, B even thought column C

Hi Prof. Williams, thanks for your suggestion. The updated code is below. It turns out it was a matter of displaying the second column in yval to get the number of N and subtracting it from the n column in the frame to get the number of Y remaining in a binary example. once this is added now the function returns the rules along with Y and N count affected by the resulting rule. I am ccing