search for: jawaharl

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2013 Aug 23
3
(no subject)
...ow m will take value =column 7+ column 12+ column 57+ column 45 i.e. for every row it will take value of sum of corresponding row's 7 & 12 & 57 & 45 column's value . So, how to write the code for this operation? -- RAJIB PRASAD Centre for Economic Studies & Planning Jawaharlal Nehru University New Delhi-67 contact no: 09868320368 mail id: rwho2007 at gmail.com
2011 Mar 31
2
how to do t-test in r for difference of mean
I am trying to do t-test to test whether the mean of one one column of the data frame is greater then another. please help me out. -- Arkajyoti Jana M. Phil/ 2nd semester Centre for Economic Studies and planning School of Social Sciences Jawaharlal Nehru University New Delhi-67 [[alternative HTML version deleted]]
2007 Jun 05
1
help with using grid to modify ggplot/lattice plots
...useful. I have gone through vignettes in the grid package but am somehow not able to understand the overall approach. It would be useful if there is something more specific that deals with using grid to modify such graphics. Vikas Rawal Associate Professor Centre for Economic Studies and Planning Jawaharlal Nehru University New Delhi
2008 Mar 07
2
training svm
What should I do if I need to train svm() with data having same value across all rows in some columns. These must be the important features of the class and we cant exclude these columns to build up models. The error I am getting is: Error in predict.svm(ret, xhold) : Model is empty! In addition: Warning message: In svm.default(datatrain, classtrain) : Variable(s) 'F112' and
2007 Apr 06
5
Labelling boxplot with fivenumber summary
I am very new to R so forgive me if this seems basic but I have done extensive searching and failed to come up with the answer for myself. I am trying to label a boxplot I have created with the values for the median, upper and lower quartiles and max and min values. I have been unable to do this or find anything on the net to say how it might be done. Is this possible and if so how? Regards,