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...245.16<153.5 is "missing," or is anything other than TRUE/FALSE? Am I using "if" incorrectly? In which case would it be more appropriate to perhaps create subsets of the data points based on < or > ycrit? Thanks in advance for any guidance-- Andy -- Andrew J. Rominger Department of Biological Sciences Stanford University rominger at stanford.edu

...modify it in an R session? If the latter, how do I go about writing a stub and making R recognize it as a working directory, and what is a session directory/how can I find where the default session directory is located? Again, my apologies for being naive, and thanks very much for any help-- Andy Rominger

...was corrected by specifying type="source", but I'm not really sure how to properly specify the argument 'lib' and so leave it as it's default value. Without specifying 'lib' is it appropriate to call type="source"? Thanks in advance for any help-- Andy Rominger

Hello, I have a question regarding shading regions under curves to display 95% confidence intervals. I generated bootstrap results for the slope and intercept of a simple linear regression model using the following code (borrowed from JJ Faraway 2005): > attach(allposs.nine.d) > x<-model.matrix(~log(d.dist,10))[,-1] > bcoef<-matrix(0,1000,2) > for(i in 1:1000){ +

Hello, I'd like to take all possible sub-summands of a vector in the quickest and most efficient way possible. By "sub-summands" I mean for each sub-vector, take its sum. Which is to say: if I had the vector x<-1:4 I'd want the "sum" of x[1], x[2], etc. And then the sum of x[1:2], x[2:3], etc. And then...so on. The result would be: 1 2 3 4 2 5 7 6 9 10 I can

...S, : error in evaluating the argument 'x' in selecting a method for function 'as.vector' If I am missing other useful functions for producing/estimating time series of the fractional/long-memory type I would also welcome suggestions. Thanks for your thoughts and insights! Andy Rominger [[alternative HTML version deleted]]

Hello, I'm trying to permute a vector of positive integers > 0 with the constraint that each element must be <= twice the element before it (i.e. for some vector x, x[i] <= 2*x[i-1]), assuming the "0th" element is 1. Hence the first element of the vector must always be 1 or 2 (by assuming the "0th" element is 1). Similarly, the 2nd must always be below/= 4, the

...mple size for proportion, not binomial > (Marc Schwartz) > ? 75. Re: Optim() Help, Unusual Error (Nikhil Kaza) > ? 76. Re: Setting breaks to data more appropriately > (David Winsemius) > ? 77. Bold greek letters using plotmath (Jim Price) > ? 78. Diffusion entropy analysis (Andrew Rominger) > ? 79. Re: Saving tab/csv delimited data with NaN's > (Sharpie) > ? 80. Plot ``freezes''. (Rolf Turner) > ? 81. Re: Log linear model - Showing non-deviation > form in glm() > ? ? ? (Christoffer Karlsson) > ? 82. Re: Saving tab/csv delimited data with NaN's &gt...