Dear all,
I have a 3x2 plot and in addition to the title of the individual plots I
would like to have an overall title
for each row. I managed to get an overall title for the whole plot matrix
with mtext:
par(mfrow=(c(3,2)), mar=c(6.4,4.5,4.2, 1.8), oma=c(0,0,3,0))
for (i in 1:6)
barplot(sample
Dear all,
I am trying to run a simple R script in batch mode on a cluster. Running a
simple test script with
"R CMD BATCH test.R test.Rout"
works fine, but as soon as I submit the very same command to the queue and
the job gets sent to a node, the following error is written to test.Rout:
Fat
Hello,
I have a vector with positive integer numbers, e.g.
> numbers <- c(1,2,1,2,3,4,5)
and want to split the vector whenever an element in the vector is smaller or
equal to its predecessor.
Hence I want to obtain two vectors: c(1,2) and c(1,2,3,4,5).
I tried with which(), but it is not so el
Dear all,
I am confused about how to create an expression. I use a package (rsbml)
which uses expressions and seems to make a difference if there is a quote
around the expression or not.
For example, package works with expressions such as
> expression(A + B)
but not with
> expression("A + B")
I
Many thanks,
"parse" is exactly what I was looking for!!
Hannes
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Dear all,
I want to explore the nullspace of a matrix S: I currently use the function
Null from the MASS package to get a basis for the null space:
> S = matrix(nrow=3, ncol=5, c(1,0,0,-1,1,1,1,-1,-1,0,-1,0,0,0,-1)); S
> MASS::Null(t(S))
My problem is that I actually need a nonnegative basis for
Hi
the solution with linear programming works very well!
Even if I take more 'realistic' matrices with dimensions of about 25x60,
the calculation of the basis goes well (if I increase the number of
iterations to 1000).
Meanwhile I also found an algorithm for an exact calculation of the extreme
ray
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