R_Notes

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Issues Related to R

  • While using R code for alpha spending, a strange behavior pertaining to random number generation was noticed that if R was invoked multiple times from the same directory. Multiple invocations of R from the same directory result in same set of random numbers. This is because in the very first invocation the seed(timestamp) is saved in a .RData file. All other invocations from the same directory then do NOT take the current time stamp as seed but reads the previous seed saved in the .RData file. Hence the same set of random numbers are generated. For more information: http://tolstoy.newcastle.edu.au/R/devel/04a/1263.html
  • R CMD BATCH --args1 --args2 xxxxx.R command showed different behavior when accepting the argument through commandArgs() method. The differences were seen on Vinodh's cahaba R 1.8.1 (Unix version) and Windows R 2.0.1.
R Graphics manual

This page provides information about generating various types of graphs in R. If you click on the image of graph, it should take you to the package documentation information. This page provides the information about the package which provides the methods for generating the graph.

R Graphics Manual

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