Posted on Nov 05, 2010 in Computer Science • Tagged with programming, regex, data frame, matrix, R, warning
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The data in a matrix must be of the same type while different columns in a data frame can have different types.
A …
Posted on Nov 10, 2010 in Programming • Tagged with R, function, programming, call, CRAN
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"[" is a function in R.
It takes elements from a container (vector, matrix, list, etc.)
For example, suppose lv is a list of vectors.
The following code …
Posted on Nov 21, 2012 in Computer Science • Tagged with optimization, programming, numerical analyis, R
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Usually when we check whether two double values equal or not, we would check whether they're close enough or not. This is due to possible information loss …
Posted on Jan 22, 2015 in Computer Science • Tagged with programming, SAS, IML, R, CRAN, example
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Suppose there is a …
Posted on Nov 22, 2012 in Computer Science • Tagged with R, programming, environment
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The option pos=1 …
Posted on Oct 29, 2013 in Programming • Tagged with tips, programming, CRAN, R
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commandArgs extract command line …