Displaying 3 results from an estimated 3 matches for "davenhall".
2004 May 28
3
Generate a sequence of random integer values
I'm trying to generate a sequence of random integer values. I've tried to
combine the random (r) and the sequence (seq) functions but this approach
does not work. For example, if I use the following command:
> a <- seq(1:100)
> a
[1] 1 2 3 4 5 6 7 8 9 etc.
This is a good start, but what I really want is something that would look
like this instead
[1] 3
2006 Jun 25
2
Error in model.frame: invalid variable type
I'm getting the following error when trying to execute a glm() procedure:
Error in model.frame(formula, rownames, variables, varnames, extras,
extranames, :
invalid variable type for 'response'
The commands I'm using to import the *.csv files, construct the data frame,
and run the glm procedure are below:
response <- read.csv("Response.csv",
2004 Jun 03
2
Simulating a landscape (matrix) in R
I'm trying to figure out how one might go about simulating a landscape
(matrix) in R. For example if one wanted to generate a simulated landscape
of precipitation values for some area (say a 100 X 100 matrix) they could
generate 10,000 numbers using a random normal distribution with a mean and
std. dev. and randomly allocate these generated numbers to the grid cells.
However, this is too