search for: fnderiv

...preparing ?nls14?: * checking DESCRIPTION meta-information ... OK * installing the package to build vignettes * creating vignettes ... ERROR Warning in engine$weave(file, quiet = quiet, encoding = enc) : Pandoc (>= 1.12.3) and/or pandoc-citeproc is not available. Please install both. Error in fnDeriv(r1, "x") : Only single expressions allowed Error in as.vector(x, "expression") : cannot coerce type 'closure' to vector of type 'expression' Error in as.vector(x, "expression") : cannot coerce type 'closure' to vector of type 'expression...

...DESCRIPTION meta-information ... OK > * installing the package to build vignettes > * creating vignettes ... ERROR > Warning in engine$weave(file, quiet = quiet, encoding = enc) : > Pandoc (>= 1.12.3) and/or pandoc-citeproc is not available. Please > install both. > Error in fnDeriv(r1, "x") : Only single expressions allowed > Error in as.vector(x, "expression") : > cannot coerce type 'closure' to vector of type 'expression' > Error in as.vector(x, "expression") : > cannot coerce type 'closure' to vector of...

Are other developers finding R 3.1.3 problematic because vignette building requires pandoc 1.12.3, while Linux Mint 17 / Ubuntu 14.04 have 1.12.2.1? R 3.1.2 seems to work fine. I'd very much like to avoid having to build as large a Linux package as pandoc, which has given me issues outside of R (it leaves out words, sentences or paragraphs when converting Latex to epub in a novel I'm

The derivative table resides in the function D. In S+ that table is extensible because it is written in the S language. R is faster but less flexible, since that table is programmed in C. It would be useful if R provided a mechanism for extending the derivative table, or barring that, provided a broader table. Currently unsupported mathematical functions of one argument include expm1, log1p,