How to Correctly Use Lists in R?

Brief background: Many (most?) contemporary programming languages in widespread use have at least a handful of ADTs [abstract data types] in common, in particular, string (a sequence comprised of...

How to patch an S4 method in an R package?

If you find a bug in a package, it's usually possible to patch the problem with fixInNamespace, e.g. fixInNamespace("mean.default", "base"). For S4 methods, I'm not sure how to do it though. The...

Extract values from data frame in R

Using R, I would like to find out which Samples (S1, S2, S3, S4, S5) fulfill the following criteria:contain minimally one value (x, y or z) bigger than 4. Thanks, Alex. Sample x y z...

Namespaces in R packages

How do people learn about giving an R package a namespace? I find the documention in "R Extensions" fine, but I don't really get what is happening when a variable is imported or exported - I need...

How to import a Heroku PG dump into local machine

I'm trying to import my production Heroku database into my development machine. My local db is PostgreSQL. First, I'm exporting the dump from Heroku to my machine curl -o latest.dump `heroku...

Returning Datatable to R from C#/.NET

I'm trying to call a .NET DLL file from R and return a Datatable. This Q&A shows how to call .NET from R and that works, but I can't find any documentation on how to return data (apart from simple...

Developing R package when functions are written in S4 and using roxygen2

I took the following code from An R Companion to Applied Regression - Chapter 8. Everything works fine except the R code written in S4. When I'm building the documentation, I'm getting...

How to implement subset replacement for S4 methods

I'm writing an S4 class in which the internal data is stored in a database and the class is mostly a gatekeeper for accessing and modifying information in the database. The class would have...

Reading Csv file with chinese characters in php

I am reading a CSV file with Chinese characters, and when i use print_r() it give me that type of array Array ( [0] => PK!ȣ�4v�[Content_Types].xml...

no method for coercing this S4 class to a vector for utilization of mclust

I'm trying to use the mclust method on an .FCS format file (which is a flow cytometry format file) and I read this file into R as flowFrame object. install.packages("openCyto") # since the old...

How to read file from internal storage when app start android

I got button wich save changes, and put this in internal storage, then when app start I want to read file if there is any ofc. i thought that would be enought but im fresh coder and dunno that is...

Unable to access ec2 ebs backed instance

For some unknown reason, an instance that was accessible via ssh on port 22 is no longer allowing access. After checking security groups and NACLs, correct routing tables associated with Gateways...

SMTP error was encountered: 555 5.5.2 Syntax error. u68sm14091815iou.0 - gsmtp

Hi i got this error when i reply an message from my inquiries 220 smtp.googlemail.com ESMTP u68sm14091815iou.0 - gsmtp hello: 250-smtp.googlemail.com at your service, [122.52.95.242] 250-SIZE...

Importing MICE object to Stata for analysis

I am trying to use imputed data created with MICE in Stata. My understanding of the steps are: converting the mids object to mi in R m=20 completed=lapply(1:20,function(i)complete(imp,i)) ...

List full of nulls despite api being called

I was working on a news app and I am still fairly new to android, just finally understanding the gist of it. I have created a custom Array Adapter which passes in News Data objects. With that I...

Snakemake - load cluster modules before an external script is called

In snakemake, you can call external scripts like so: rule NAME: input: "path/to/inputfile", "path/to/other/inputfile" output: "path/to/outputfile", ...

how to fix JSON decoder issue when using REST in Python to connect to SharePoint & Read data

i am following this Guide in an effort to connect to a sharepoint site with python and grab some data using the REST api. however, i keep having trouble with the JSON decoder in order to read the...

GRanges as column in base::data.frame

I would like to store a GenomicRanges::GRanges object from Bioconductor as a single column in a base R data.frame. The reason I'd like to have it in a base R data.frame is because I'd like to...

Is a S4 class an object?

From Extending R by Chamber, I heard that everything existing in R is an object (which is also true in Python: a class in Python is an object, the class of a class is a metaclass.). Is a S4 class...

Google Foobar solution works on Jupyter notebook but not on Google's terminal

I'm on level 3 of Google Foobar, and the code I've written works in a Jupyter notebook, but when I run it in the Foobar command line none of the test cases pass. There's no error of any kind when...

RDCOMClient with COMCreate("Outlook.Application") crashing R

I'm using the package RDCOMClient with R version 4.0.2. It was downloaded using: devtools::install_github("omegahat/RDCOMClient") I'd like to use the package for reading and writing email. I've...

Estimating the Variance Inflation Factors (VIF) of a SEM model (lavaan)

I am trying to find the Variance inflation factor (VIF) from a Structural Equation Model (SEM). My model is: # load the data library(readxl) Log_And_SurveyResult <-...

R: How to truly remove an S4 slot from an S4 object (Solution attached!)

Let's say I define an S4 class 'foo' with two slots 'a' and 'b', and define an object x of class 'foo', setClass(Class = 'foo', slots = c( a = 'numeric', b = 'character' )) x <- new('foo', a =...

Python Stargazer LaTeX output unusable

I'm trying to use Python's Stargazer package to output regression tables. However, the output is hopelessly scrambled for someone who doesn't know how to format it. The default example...

Make 3d Python plot as beautiful as Matlab

Note: This is not a conversion question. It is meant to see if Python has the capability to produce 3D plot like Matlab. I have created a Matlab plot as follows: I tried to plot it using Python...

Unable to connect Java Spring Boot application to Amazon Keyspaces

I'm trying to connect my java spring boot application to my AWS Keyspaces keyspace. I've followed amazons docs on how to setup and configure this connection using the DataStax Java Driver for...

Error in as.vector(x) : no method for coercing this S4 class to a vector

I am trying to run an R script on the command line of bash (I am using CentOS 8) with the command: cat 1_myScript.R | R --slave --args $SAMPLE"_x" $SAMPLE"_y" where $SAMPLE is an argument that I...

Problems using risc-v timer interrupts and simulating with spike

I'm trying to make a timer interrupt, I have the following risc-v_tools installed riscv64-unknown-elf-gcc toolchain, spike simulate and pk . this is my code: #define MTIME *((volatile...

WEBRTC Switch Input Devices With Socket

I have an application. In this application, I cannot change the video that goes to the other party. 'use strict'; var Meeting = function (socketioHost) { var exports = {}; var...

"Back engineering" an R package from compiled binary version

I work for an org that has a number of internal packages that were created many years ago. These are in the form of package zip archives that were compiled on Windows on R 3.x. Therefore, they...