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Questions - sapply

Run table for all columns in sequence

If this is my dataset Id Col_A_1 Col_A_2 Col_A_3 ..... Col_A_100 1 87 88 82 88 2 88 82 82 87 3 82 87 ...
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Ahir Bhairav Orai

r

list

lapply

sapply

Votes: 0

Answers: 2

Latest Answer

I just created a small tibble to work with and to illustrate it with. Tibbles can essentially be considered lists, so lapply works just fine. Since the result can be cumbersome to work with, I put it ...
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Fmylife92

Run a function across columns without stripping Labelled attributes

I have a large number of SPSS files, and I need to generate random data that looks like the data that is in the file. When I read in the SPSS files (using haven's read_sav), they come in with variable...
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seehuus

r

sapply

r-haven

Votes: 0

Answers: 1

Latest Answer

(Up front, I'm assuming your reassignment to rat should really be dat, otherwise it is not reproducible and shouldn't be since dat is not changed when forming rat.) Your use of sapply is homogenizing ...
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r2evans

Web scraping with R (rvest)

I'm new to R and am having some trouble to create a good web scraper with R.... It has been only 5 days since I started to study this language. So, any help I'll appreciate! Idea I'm trying to web scr...
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user13809872

r

dataframe

web-scraping

rvest

sapply

Votes: 0

Answers: 3

Latest Answer

Here is a way. It's more complicated than your function because those pages have more than one table so the function returns only the tables with a column names matching "Pos.". Then, before...
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Rui Barradas

Loop over a sequence of values and return the mean

I have a data.frame that consists of multiple assets for four different asset classes: mData = structure( list( Id = c( "100522", "102342", "103966...
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Nuller

r

lapply

sapply

Votes: 0

Answers: 1

Latest Answer

You can use indeed purrr::map_dbl or sapply to apply a function on a vector of different thresholds: alpha.seq <- seq(0.001, alpha.tolerance, by=0.0001) sapply(alpha.seq, function(x) mean(abs(mData...
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danlooo

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