search for: rowindex

Hello,? I have a data set similar to below and I wanted to keep the observations after the first occurrence of these department: "B", "D", "F".For example for ID=2, the observation with deps=B and anything after will be kept in the data. For ID=3, observations with deps=D and anything after will be included. Subject<- c("2", "2", "2",

...sh On Wednesday, March 30, 2016 1:13 AM, Jim Lemon <drjimlemon at gmail.com> wrote: Hi Farnoosh, Despite my deep suspicion that this answer will solve a useless problem, try this: last_subject<-0 keep_deps<-c("B","D","F") keep_rows<-NULL for(rowindex in 1:dim(df)[1]) { if(df[rowindex,"Subject"] != last_subject) { ? last_subject<-df[rowindex,"Subject"] ? start_keeping<-0 } if(df[rowindex,"deps"] %in% keep_deps) start_keeping<-1 if(start_keeping) keep_rows<-c(keep_rows,rowindex) } final<-matrix(unl...

...test files ? e.g. suppose I?m trying to read from the test_file workbook on my desktop. The following code extracts rows 1 and 2 from worksheet = ?johnny?. setwd("C:\\Documents and Settings\\dmenezes\\Desktop") info<- read.xlsx("test_file.xlsx",sheetName="johnny",rowIndex=1:2,header=FALSE) info However, when I try to apply this to my real, large workbook, things go wrong, with the following error message. Any ideas/workarounds? Error in .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod", cl, : java.lang.OutOfMemoryError: Ja...

Hi all, I am new to R and learning the same. I would like to create a sparse matrix from an existing file whose contents are in the format "rowIndex,columnIndex,value" for ex: 1,2,14 2,4,15 I would like to create a sparse matrix by taking the above as input. However, I couldn't find an example where the data was being read from a file. I tried searching in R tutorial and also searched for the same in web but in vain. Could some one k...

...ensions (row,col,fileN) . ( Converting the data into 3D cannot simply done by: array(x, c(2,3,2)) because breaks the structure (e.g. 1,3,5 is type mismatch) array(1:12,c(2,3,2)) , , 1 [,1] [,2] [,3] [1,] 1 3 5 [2,] 2 4 6 ... Of course following R's indexing order (rowIndex is the fastest) retains the structures, but X and Y dimensions are transposed. (note, c (2,3,2) => (3,2,2)) array(1:12, c(3,2,2)) , , 1 [,1] [,2] [1,] 1 4 [2,] 2 5 [3,] 3 6 Its like converting into Japanese vertical reading. It is not that I cannot get used to it, but I...

The following examples are confusing to me. It is OK, to assigned NULL to one element in a list. The result is still a list. However, a list of NULL's are reduced to NULL. I don't understand how this conversion occurs. Could somebody let me know what is going on? > X=matrix(1:8, nr=4) > apply(X,1, function(x) {if(x[[1]]==3){NULL}else{x[[1]]}}) [[1]] [1] 1 [[2]] [1] 2 [[3]] NULL

Hai, I'm trying to write these var output data from these codes inside excel file. My directory to store the data is /D:\FYP\image / but receive an error message : /Error in write.xls(mydata, "D:\\FYP\\image.mydata.xls") : object 'mydata' not found/ these are my codes, can you help give an advice or idea with my problem: /library("biOps")

...ted means of closest 30 non-NA neighbours and I got the following message back: [1] "imputing on 270 missing values with matrix size 7304" [1] "Computing distance matrix..." [1] "Distance matrix complete" [1] "Imputing row 70" Error in which(missing.matrix[rowIndex, ]) : subscript out of bounds In addition: Warning message: In dist(x, upper = T) : NAs introduced by coercion What syntax do I need to impute the precipitation data? Failing that, do you have another recommendation of a method to use? Statistics is not my strong point. thank you for any help yo...

...red, Resample == "Fold1") str(first_holdout) 'data.frame': 90 obs. of 5 variables: $ pred : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 $ obs : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 $ rowIndex: int 2 3 9 11 25 29 35 36 41 50 ... $ mtry : num 2 2 2 2 2 2 2 2 2 2 ... $ Resample: chr "Fold1" "Fold1" "Fold1" "Fold1" ... Are these 90 observations in Fold1 used as training set? If yes then where is the test set for this fold? thanks for any help!...

...ght/width in GdipDrawImagePointsRect. gdiplus: Fix an overzealous optimization. tapi32: Stub lineOpenW. Zhenbo Li (5): mshtml: Added IHTMLTableRow::align property implementation. mshtml: Added IHTMLTableRow::vAlign property implementation. mshtml: Added IHTMLTableRow::rowIndex property implementation. mshtml: Added IHTMLTableRow::sectionRowIndex property implementation. mshtml: Added IHTMLTable::align property implementation. -- Alexandre Julliard julliard at winehq.org

...ta on the bottom and the attachment.Maybe some one could tell me an appropriate way to show it.I'm sorry for the inconvenience. Q:How to generate a 53*53 diagonal matrix by my data Some problems confused me are that: 1.Since it is a diagonal matrix,I have tried to transform col1 and col2 to rowindex and colindex ,but I don't know how to generate matrix by its value's index 2. As you see, the number of 2353 corresponding to other ids in col2 is 53,however,the number of 2409 corresponding to other ids in col2 is 52 and 2500 corresponding to 51 values and so on,so it is hard to use matri...

I have a library I''ve developed that I believe is the most flexible and useful table sorting/striping/row-selecting library around. Big features: Single and multiple-level sort Arbitrary sort criteria (IP address, date, etc.) Works with table headers that are > 1 row or column large Stripe tables and/or enable row selecting Row selecting supports drag-select and SHIFT-click No extra

I'm using caret to assess classifier performance (and it's great!). However, I've found that my results differ between R2.* and R3.* - reported accuracies are reduced dramatically. I suspect that a code change to kernlab ksvm may be responsible (see version 5.16-24 here: http://cran.r-project.org/web/packages/caret/news.html). I get very different results between caret_5.15-61 +