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I am following some code and I can apply everything until I get to the command:
s1 %*% cc1$xcoef This line does not work for me and I can't find documentation to explain it's purpose. I get this error:
Error in s1 %*% cc1$xcoef : non-conformable arguments What does the %*% do and can I use another function?
I am using R version 3.0.3 (2014-03-06) "Warm Puppy"
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duplicated() in R The duplicated() is a built-in R function that determines which elements of a vector or data frame are duplicates of elements with smaller subscripts and returns a logical vector indicating which elements (rows) are duplicates.
Remove duplicate rows in a data frameThe function distinct() [dplyr package] can be used to keep only unique/distinct rows from a data frame. If there are duplicate rows, only the first row is preserved. It's an efficient version of the R base function unique() .
It is not possible to have duplicate row names, but a simple workaround is creating an extra column (e.g. label) that holds the name that you would assign to your rows. You can then use this column for the names in the graph instead.
Use ?'%*%' to get the documentation.
%*% is matrix multiplication. For matrix multiplication, you need an m x n matrix times an n x p matrix.
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