I'm trying to use LDAvis for the first time, but have run into the following issue:
After running serVis on my JSON object,
serVis(json, out.dir = 'LDAvis', open.browser = FALSE)
the 5 expected files are created (i.e., d3.v3.js, index.html, lda.css, lda.json, and ldavis.js). As I understand LDAvis, opening the html file should open the interactive viewer. However, in doing this, only a blank webpage is opened.
I've compared the html source code with that from LDAvis projects found online, and they are the same. This was built using Christopher Gandrud's script found here where the LDA results come from the topicmodels package and used the Gibbs method. The underlying data uses ~45K documents with ~15K unique terms. For what it's worth, the lda.json file seems a bit small at ~6MB.
Unfortunately, this issue seems too large to provide sample data or reproducible code. (If I could isolate the issue more, then perhaps I could add sample code.) Instead, I was hoping if readers had any ideas for the cause of this issue or if it has come about before.
Thanks ahead for any feedback!
I've resolved the issue after realizing that most web browsers restrict access to local files. For Chrome, the .exe needs to be called with the option "--allow-file-access-from-files". Otherwise, no error is displayed opening the LDAvis output unless you inspect HTML elements manually.
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First, I'll apologize for not having a fuller reproducable example, but I'm not entirely sure how to go about that given the various layers to the question/problem.
I'm moving a blog over from Blogdown to a new Quarto-based website and blog. I have three saved brms object files that I'm trying to read into a code chunk in one of the posts. The code chunks work fine when I run them manually, but when I try to render the blog post I get the following error:
Quitting from lines 75-86 (tables-modelsummary-brms.qmd)
Error in stri_replace_all_charclass(str, "[\\u0020\\r\\n\\t]", " ", merge = TRUE) :
invalid UTF-8 byte sequence detected; try calling stri_enc_toutf8()
Calls: .main ... stri_trim -> stri_trim_both -> stri_replace_all_charclass
Execution halted
I've checked the primary data frame contained in the brms model object and all of the character vectors there are valid UTF-8 vectors. These models objects can be quite large, so it's possible I'm missing something buried deep within the model object, but so far it's nothing apparent.
I tried re-running the models again to ensure that the model objects' files weren't corrupted, and also to make sure that the encoding issue wasn't somehow introduced the last time they were run, which would have been on a Windows machine and a different version of brms.
I've also moved the brms files around to different directories to see if it's a file path issue. The same error comes up regardless of whether the files are in the same folder as the blog post qmd file or in a parent directory file I use for storing site data.
I've also migrated several other posts to the new Quarto site successfully, and some of them also contain R code, but it's all rendering without a problem.
Finally, I don't quite understand how to implement the suggersted alternate function found in the error message either.
I use R and the Magick package to process screenshots! Currently, I'm going through an external tool to get my screenshots. This tool gives me a file (png or other) that I have to reload to use it with Magick. Is there a package that would allow me to take screenshots (in whole or only partially) and to retrieve the image directly into a variable without going through an intermediate file? I found plenty of stuff for web-snapshots but nothing for a capture of my screen...
Thanks in advance
It is my first experience in writing an R-package. I used roxygen2 by following the instructions given in this link http://kbroman.org/pkg_primer/
Everythig is working fine except few things.. there could be a simpler solution to solve the issues, but I am not finding clues what I am doing wrong. I hope someone here in this blog can give a solution to solve my issues.
First issue is about {\code\link{function-name}} in roxygen2:
In .R script I inlcuded this line:
#' #seealso \code{\link{s2a}}
After documenting (generating .Rd files) there is no hyperlink to s2a ,
in documentation s2a shows like a normal text not like hyperlink..
export(s2a) is listed out in NAMESPACE.
Is there any other place i need to modify ?
Second issue is about data():
I saved the dataset in .Rdata format and placed in the data/ in package directory. I also created the .R script in R/ as like following steps here http://kbroman.org/pkg_primer/pages/data.html
In DESCRIPTION file LazyData: true .
but when I type data(shh) in R console gives a warning message
data(shh)
Warning message:
In data(shh) : data set ‘shh’ not found
Any ideas is of great help:)
It's been a while since you asked this, but I was having the exact same problem with hyperlinks in documentation not appearing correctly, so for anyone who might be having a similar problem: Are you possibly viewing the development documentation? The links don't seem to work there. (You'll know this is the case if you see Using development documentation for your_function_name in your console output when you run ?your_function_name.)
The links should appear in the non-development documentation. To generate this you can try building and reloading your package, for instance by following the steps here: http://r-pkgs.had.co.nz/man.html#man-workflow-2
How could I refer to and evaluate (in an .Rmd file) specific chunks of R code, located not in a different .Rmd file, but in an R module, containing chunks of code, tagged with ## #knitr chunk_name? Thanks!
I just figured out what the problem was: I have simply forgotten to call read_chunk() function for the R module, containing those external code chunks. So far, everything appears to be working, with the exception, mentioned below.
One problem I'm currently experiencing (and this might be a good separate question, but I'll leave it as is for now) is that knitr doesn't seem to respect working directory and paths, constructed on its basis, using relative paths, such as file.path(getwd(), "data/transform"). I think this contradicts with knitr design, which allows code reuse via chunks in external R modules. What are approaches that people are using to solve this peculiar situation? I believe that it might be a good idea to submit as a feature request.
I am attempting to automate the insertion of JPEG images into Powerpoint. I have a macro done for that already, except using R would be infinitely better for my purposes.
The package R2PPT should do this, I understand. However, I cannot use it. For example, when I try to use PPT.Open, I understand I can do it two different ways by calling method = "rcom" or method = "RDCOMClient". Using the latter, R will always crash, sending an error report to windows. Using the former, it tells me I need to install statconnDCOM , before giving the error:
Error in PPT.Open(x) : attempt to apply non-function.
I cannot install statconnDCOM freely, as I wouldn't call this work non-commercial. So if there isn't a way to get around this issue, are there at least some free alternatives to R2PPT so that I can save several hours of manual work with a simple R code? If there is a way for me to use R2PPT, that would be ideal.
Thanks!
Edit:
I'm using R version 2.15 and downloaded the most recent version of R2PPT. Powerpoint is 2007.
Do you have administrative privileges on this machine?
There is an issue with package RDCOMClient. It needs permissions to write file rdcom.err in the root of drive C:. If you don't have privileges to write to c:, there is a rather cumbersome workaround:
Close R
Create "c:\temp" folder if it doesn't exist.
Locate on your hard drive file rdcomclient.dll. It usually placed in \R\library\RDCOMClient\libs\i386\ and in \R\library\RDCOMClient\libs\x64\ (you need to patch file which corresponds your Windows version - 32 bit or 64 bit). It's recommended to make backup copy of this files before patching.
Open rdcomclient.dll in text editor (Notepad++, for example -http://notepad-plus-plus.org/)
Find in file string c:\rdcom.err - it occurs only once.
Go into overwrite mode (usually by pressing "Ins" key). It is very important that new path will have the same number of characters as original one. Type C:\temp\e.rr instead of c:\rdcom.err
Save the file.
Now all should work fine.
Arguably not an answer, but have you looked at using Sweave/knitr to render your presentations in LaTeX using something like Beamer? (As discussed on slide 17 here.)
Wouldn't help any with getting JPGs into a PowerPoint, but would certainly make putting R-output (numerical or graphical) into a presentation much easier!
Edit: if you want to use knitr (which I recommend), here's another reference.