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I inherited legacy code from 2009 that includes the many of the following types of expressions -
variable %in% cs(do, ph, t, secchi)
I get the following error - Error: could not find function "cs" when I try to run anything like this, have not seen 'cs' before, and can't locate any info in help files, google, or on this site so far. I'm guessing it is a deprecated way of concatenating strings but would like to confirm before I update the legacy code.
There is a Cs function in Hmisc package. I think it is that.
See this
library(Hmisc)
Cs(a,cat,dog)
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Unfortunately I have to deal with a data file with .int file format. This has the effect of littering any search results with unrelated information about integers.
I can't figure out how to open this file in R. I have an example with the Julia language, shown below:
filename = "mnist_train.int"
open(filename) do f
...
end
But when I try to search for a similar function in R, I either find results about opening excel files, results for other languages, or results that deal with integers. Could someone please point me to some resources for dealing with this filetype?
Because I am not sure about what the content type, guess you trying to open a binary file format.
You can have a look at ?readBin
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I am using R Studio and creating some vectors and doing some calculations with them. However, when I execute the code, I get the unused argument error. How can I solve this issue?
f <- c(2,4,6)
v <- c(1,2,3,4,5)
cos(c(0, pi/4, pi/2, pi))
The variable might exist in your R workspace. What you could do is to start from a clean session or try typing rm("c") in your console and this will solve your problem. It cleans c from the workspace.
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I am new to R and am learning about the dplyr package. In the documentation for %>% I can read about how the packages changes the grammar or the language. For example,
The magrittr pipe operators use non-standard evaluation.
I would like to learn more about how this is done, but am unsure of what keywords to use. Can someone point me to a documentation page on what features R exposes that allows one to write code that modifies the order of evaluation?
From the R console enter:
?Syntax
Also see the infix and prefix section of the R Language Definition manual.
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I'm curently using R package data.table to process big datasets.
I'm wondering if there is a difference between the syntax
DT[,v]
and the syntax :
DT$v
if DT is my data.table object and v the variable I want to select.
I know that the dollar sign is usually used for data frames and that [,v] is always used in data.table examples. However they both work and seem to give (in my experience with 5million rows) similar times to execute.
Do you know if they are processed differently and if one is more efficient when processing even huger datasets ?
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Running Compile Notebook from RStudio.
I am getting:
Error: could not find function "SegNeigh"
"SegNeigh" being my own function, properly sourced; the script runs fine without R Markdown.
Any help appreciated.
In order for the rmarkdown doc to find the function, you either need to define SegNeigh in the same document or place it in another file and source that file explicitly