Displaying 2 results from an estimated 2 matches for "coordinaten".
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2009 Jul 29
3
Newbie in R: Reading .txt files and storing the 'numbers' in a vector
...y,
I'm a newbie in R and just went through an introduction class recently.
Here's my problem.
I have 2 text files (.txt) with plain numbers ('doubles' for those who
know c++) ordered into 2 columns as below:
coordinate1 value1
coordinate2 value2
coordinate3 value3
... ...
coordinateN valueN
I would like to write a small programme in which i would:
1. take all values of file 1 and store them in a vector
2. substract to those all values of file 2 (one by one) and store the
result in a new vector
3. Create a sliding window of chosen size and calculate the
mathematical averag...
2008 Jul 18
3
"Spreading risk" in a matrix
I have a binary matrix that represents a map of invasive species risk (1 =
infested; 0 = uninfested). It started as a matrix of probabilities
(developed in ArcMap) that I converted to binary with this R code:
binary.matrix<-matrix(rbinom(length(prob.matrix),prob=prob.matrix,size=1),nrow=nrow(prob.matrix))
Now, I would like to "spread" the risk for year 2 of the invasion. I'd like