Category "r"

Add row number column to a reactive data frame in Shiny

I am trying to add a row index column to a reactive data frame created on-the-fly from user inputs. I am able to do this outside of Shiny using the tibble::rowi

A Function That Check for Complete Cases in Several File Fail When Specifing A File Range

I have created a function that checks a string of CSV files for complete values and creates a table with these values. The function takes 2 arguments, the first

How can I access camera and take photos within my R Shiny App? [closed]

I am willing to make my Shiny App accessing the camera and take photos every 5 seconds in the background. I do not want to see the photos on t

How to plot vectors orthogonal to quadmesh?

I am trying to use the rgl package in R to plot unit vectors orthogonal to each cell in a quadmesh. I've used this page for a bit of guidance, and currently hav

Reading multiple .Rmd scripts including SQL-queries from a separate .Rmd script

I have created a .Rmd script where I try to read multiple external .Rmd scripts that includes a combination of R and SQL syntax. For this I tried to use: rmarkd

Using ggplot2 & geom_bar to change bar color based on 1 factor variable and bar pattern based on another factor variable

I want to use ggplot2 & geom_bar to change bar color based on 1 factor variable and bar pattern based on another factor variable. I can't figure out how to

Making Combinations of Items

Suppose I have the following lists of factor: factor_1 = c("A1", "A2", "A3") factor_2 = c("B1", "B2") factor_3 = c("C1", "C2", "C3", "C4") factor_4 = c("D1", "D

what is the rsconnect command to deploy a learnr site?

I have a simple one-page learnr site containing several quizzes. It works fine and deploys fine when I press the Deploy ("Publish the application") button in rs

Error when updating a dataframe with new column inside a for loop using Dplyr

I have the following R dataframe df: library(tidyquant) start_date <- as.Date('2022-01-01') end_date <- as.Date('2022-03-31') assets_list <- c('DGS30

Ignoring count reset at specified point in time series

I have a dataframe like this (edited; adding a grouping variable measurement_type): data <- data.frame(ID = as.factor(c(rep(1, 10),

Error in new.session() : Could not establish session after 5 attempts

I've been facing in R the error message for days using getSymbols of the quantmod package: Error in new.session() : Could not establish session after 5 attempts

How can you graph multiple overlapping 18 month periods with daily data?

I am doing an exploratory data analysis for data that is collected at the daily level over many years. The relevant time period is about 18 - 20 months from the

How to fix jagged line from predict_gam in ggplot2?

Data: structure(list(ID = c(19903L, 28185L, 28207L, 28429L, 28522L, 29092L, 29127L, 29219L, 29304L, 30981L, 31166L, 31411L, 32010L, 33231L, 33640L, 33714L, 34

How do I force r to print character strings with single quotes?

I'm writing some code that interfaces with SQL, and I need my character strings to print with single quotes, but R defaults to double quotes. When I go to ?Quot

How do I replace values in a category by group in R

Hi I have a dataframe sleep_data where I am attempting to change Id values to user1:user33 based on groups. So where Id == 1503960366 change to user_1, Id == 16

Manually estimate probit model with autoregressive structure in R

I would like to write an R algorithm which would perform the Maximum Likelihood estimation of a binary choice model (probit/logit, it does not really matter) wi

How can I make time series plot?

I created a dataset with these variables. Can you help me please.

Merging in R returns columns full of NA values

I am trying to finish a business case in Kaggle but I am having some issues when merging two data frames. Having dataframe "dailyActivity" as: dailyActivity <

Error in tq_get, x = 'MKL', get = 'stock.prices': Error in new.session(): Could not establish session after 5 attempts [duplicate]

I am having difficulties pulling stock data. The code has worked earlier today, however this afternoon I became unable to pull any stock data

Avoid labels overlap in bar chart

How to avoid my y-axis label overlap in this case(top 5 most frequent words for each year)? Because I may need to change the number of words(ie.top10, top20) la