shalabhgandhi@usa.net
2000-Nov-02 05:41 UTC
[Rd] Pl. provide and Input for var.test (PR#722)
I want to use var.test function of ctest library. I was able to generate the output from R on the input given by rnorm. But when I store the same data set provided by rnorm into a file, and then read a file into a dataframe, then on using the dataframe as a parameter to var.test function - it gives an error "not enough x observations". I'll explain the above mentioned problem of mine for which I am mentioning 2 cases CaseA and CaseB. CaseA is working but CaseB is not. (CaseA) Following are 4 commands I gave: R library(ctest) x<-rnorm(50) y<-rnorm(30) var.test(x,y) The output generated by R was: F test to compare two variances data: x and y F = 0.9505, num df = 39, denom df = 29, p-value = 0.8707 alternative hypothesis: true ratio of variances is not equal to 1 95 percent confidence interval: 0.4675884 1.8646602 sample estimates: ratio of variances 0.950451 (CaseB) Now I want R to give me the same output as above, when I read it from a file. The commands I gave are: R library(ctest) x<-read.table("input1.txt", header = FALSE) y<-read.table("input2.txt", header = FALSE) var.test(x,y) The output generated by R is an error: "not enough x observations" I want to know why is this error coming, since I am creating the input1.txt from rnorm(50) and input2.txt from rnorm(30),which should mean the same? Pl. see if you can provide any help on this. regards shalabh gandhi ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=1 ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=1 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._