r

  1. S

    lm for multiple regression hangs up

    I'm new to R and came over strictly to do a regression on a dataset with 28 variables and 60k entries (excel limits you to 16 variables). I watched some tutorials, read some guides, then wrote this script with the hope that I would easily get the results: mydata2 <-...
  2. L

    Feature mapping

    Hi all, Is there any pre-built function that can generate the following mapping: 1) Any 2 vectors, say... X1 = seq(-5,10, 0.1) X2 = X1^2 2) For a grade 2 mapping the output would be... out = [ X1 | X2 | X1^2 | X1.X2 | X2^2] (alternatively with one column X0 =1, but this can...
  3. T

    R to latex

    I've recently learned to output R figures and tables as latex code that I can then easily call into a document. Given the popularity of things like the r package knitr out there on the web, I'm curious if people here who write statistical documents, including slides, are users of the various...
  4. T

    Difference between SPSS and r standard errors in glm Probit analysis?

    Hello all, My name is Edwin R. Burgess, I am a Ph.D. candidate in biology at Northern Illinois University. My dissertation is being done on the effects of commonly used filth fly pesticides on parasitic wasp species used for biological control. Right now, I am doing binary mortality response...
  5. P

    Polynomial regression: how to plot several regression lines on same graph.

    Hi there, I am currently working on my thesis which is concerned with abnormality of differences between index scores on an intelligence test. An important factor here are the correlations between indexes. There are 4 indexes, hence 6 possible pairs. Correlations between indexes are provided...