search for: gathoni

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2011 Mar 10
3
Fw: random sampling steps in R with replacement
Please note is with replacement From: taby gathoni <tabieg@yahoo.com> To: R help <r-help@r-project.org> Sent: Thursday, March 10, 2011 11:53 AM Subject: [R] random sampling steps in R Dear all, Could someone assist me in random sampling steps/code in R? I have a main sample of 42 males and 165 females and I want to come up with abou...
2011 Mar 16
2
calculating AUCs for each of the 1000 boot strap samples
Hallo, I modified a code given by Andrija, a contributor in the list  to achieve two objectives: create 1000 samples from a list of 207 samples with each of the samples cointaining 20 good and 20 bad. THis i have achievedcalcuate AUC each of the 1000 samples, this i get an error. Please see the code below and assist me. > data<-data.frame(id=1:(165+42),main_samp$SCORE,
2011 Feb 07
2
problem in merging
Hi all, I am having this error while trying to merge about 2 dataframes m_merge = merge(m_accts,m_op, by.y="CUST_ID",by.x="FORACID",all.y=TRUE,all.x=TRUE) Error: cannot allocate vector of size 10.0 Mb Taby [[alternative HTML version deleted]]
2011 Jun 21
2
interaction between categorical variables
Dear R-users, I need some  assistance. I am running some interactive variables for categorical variables. I have dgen(2 levels converted to dummy variables)  and dtoe(4-levels also converted to  dummy variables). So I have worked with them in two ways: i created a variable X1 = dgen*dtoe  and I get an error "Error in dgen * dtoe : non-conformable arrays"then i run a glm, binomial
2011 Jan 03
1
personal details appearing on google such after I pose a question in the R-help forum
Hi all, Out of curiosity I googled my name yesterday to just see what new information  in the web there is associated with me. To  my surprise, I found in addition to the  questions i have posted on this forum, my email address and my signature details (name, address, telephone number) seem to appear everytime i pose a question. How can i conceal my personal details from the access of anyone when
2011 Feb 14
1
problem in installing Rattle in R 2.12.1.0
Hi all, Please help, I am getting an error when I try installing rattle. Error in as.GType(type) : Cannot convert RGtkBuilder to GType I have already installed gtk-2.12.9-win32-2  and gtk2-runtime-2.22.0-2010-10-21-ash and restarted R as instructions require. Please assist me Taby [[alternative HTML version deleted]]
2011 Mar 10
1
random sampling steps in R
Dear all, Could someone assist me in random sampling steps/code in R? I have a main sample of 42 males and 165 females and I want to come up with about 1000 samples of 20 males and 20 females from this main sample. While at it, i would also like to come up Accuracy Ratios (ARs) with corresponding confidence intervals. Please assist. Thanks so much, Taby [[alternative HTML version
2011 Oct 11
1
warning with cut2 function
Dear r user, please find my attached sample of the dataset i? am using to create a crosstable and eventually plot a histogram from the output. I am using? the cut2 function to create bins, about 7 of them using the code after reading the data: cluster <- cut2(cross_val$value, g=7) I get the warning: Warning message: In min(xx[xx > upper]) : no non-missing arguments to min; returning Inf
2010 Dec 20
1
transposing panel data
...t Management Office, Equity Bank Limited,P.O. Box 75104-00200 Head Office, Upper hill, NHIF BLDG, 14th Floor, Nairobi, Kenya Direct Extension : +254732112721   Mobile: +254722309538 Email: tabitha.mundia@equitybank.co.keSkype ID: twamaeYahoo ID: tabygathoni@yahoo.com An idea not coupled with action will never get any bigger than the brain cell it occupied. Arnold Glasgow ...... "Attempt something large enough that failure is guaranteed…unless God steps in!" --- On Mon, 12/20/10, Kohleth Chia <kohleth@gmail.com> wrote: From: Kohlet...
2011 Apr 08
3
random sampling with levels and with replacement
Dear all, i have a dataset of about 400 records , with a variable that has  two levels 40 bad and 360 good among other variables,how do i come up  with10 random samples that have the composition of as the main sample  but maintaining the 40 bad 360 good with replacement, i recently discovered that my random samples generated dont maintain the ratio. My code is as  : mysample <-
2011 Apr 13
1
plotting line graphs for output from crosstabs function
Hi R-users, This is a generic question, is there a way to plot a line graph for the output from crosstable function? one of the inputs to the crosstab function is categorical. Taby -- [[alternative HTML version deleted]]