Questions tagged [r]
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129,684
questions with no upvoted or accepted answers
62
votes
0
answers
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How might I get detailed database error messages from dplyr::tbl?
I'm using R to plot some data I pull out of a database (the Stack Exchange data dump, to be specific):
dplyr::tbl(serverfault,
dbplyr::sql("
select year(p.CreationDate) year,
...
- 21.3k
45
votes
0
answers
1k
views
Use the `pos` argument in Rgraphviz to fix node position
Based on this question Automatically curving an arc when it is overlapping with another one, I am trying to set the pos attribute in a RGraphviz plot.
Can someone show how to correctly use the pos ...
- 25.6k
37
votes
1
answer
973
views
How to `\link{}` to a specific section of an Rd file with Roxygen2?
Say I want to link to the "Details" section of my documentation for function foo, what do I do? \link{foo:Details} doesn't appear to work, so what is the right command?
- 10k
36
votes
0
answers
1k
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Interactive selection in ggplotly with geom_hex() scatterplot
I am trying to create a scatterplot matrix with interactive selection between geom items in individual matrix plots. This works when I am dealing with geom_points (inside ggpairs()). When a user ...
user2808302
31
votes
0
answers
357
views
Installing error in Google Cloud using CloudML library in R
I'm trying Google Cloud for the first time for training a DNN model with using Keras in R.
The use of the cloudml_train()-function try to install a lot of libraries on the Google Cloud server, and ...
- 411
29
votes
0
answers
7k
views
rmarkdown using kable with list of data.tables loses table formatting
I have a rmarkdown document where I want to use a list of data.tables and include them in a PDF/HTML/MS Word document. Each component of the list contains one data.table.
What I'm trying to achieve ...
- 1,311
25
votes
0
answers
816
views
How to incorporate weights into the likelihood of a WinBUGS model?
I want to incorporate weights into the likelihood of a WINBUGS model to do what brms does with weights.
The usual BUGS approaches to accomplish that for dnorm and dpois are not working for dbin.
In ...
- 1,493
21
votes
0
answers
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Error in texi2dvi running knitr::knit2pdf
If I run
knit2pdf("test.Rnw")
...on a .Rnw file using knitr in R, I get this error:
Error in texi2dvi(file = file, pdf = TRUE, clean = clean, quiet = quiet, :
Running 'texi2dvi' on 'test.tex' ...
- 13.7k
20
votes
2
answers
2k
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TPR & FPR Curve for different classifiers - kNN, NaiveBayes, Decision Trees in R
I'm trying to understand and plot TPR/FPR for different types of classifiers. I'm using kNN, NaiveBayes and Decision Trees in R. With kNN I'm doing the following:
clnum <- as.vector(diabetes....
- 5,762
20
votes
3
answers
1k
views
Access to MySQL with R using a pre 4.1.1 authentication protocol
I need to access to a MySQL remote server, and I want to do this with the R software.
I set up the connection parameter but I can't access. I use this code:
drv <- dbDriver("MySQL")
library(...
- 301
18
votes
0
answers
313
views
Creating Spark Objects from JPEG and using spark_apply() on a non-translated function
Typically when one wants to use sparklyr on a custom function (i.e. **non-translated functions) they place them within spark_apply(). However, I've only encountered examples where a single local data ...
16
votes
2
answers
384
views
Add a horizontal discrete legend below the chart in ggvis
I'd like to make a horizontal legend below the ggvis chart. I can use legend properties to place it below the chart, but don't know how to make the labels horizontal below the legend title. Below is ...
- 947
16
votes
1
answer
410
views
unconditional warnings when recycling
I'll start my question by reminding what "recycling" is, and for that, I will quote another user (re: Brian Diggs' question about Implementation of standard recycling rules):
One nice feature of R ...
- 88.7k
15
votes
1
answer
1k
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R Shiny Apps Greys Out and Hangs
It seems that on occasion my R Shiny app appears to grey out and hang when a user first hits the site. I believe this happens because their previous web socket connection didn’t successfully terminate ...
- 345
14
votes
0
answers
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how do I use @importFrom so that it applies to a whole R package?
automated data analysis workflows
I have the following code in my packagename.R file in the packagename folder.
I know I am going to use certain functions from other packages routinely, so I want to ...
- 4,658