Replace month abbreviation with number
For example: df$DateSN Date 1 07-Mar-2019 2 06-Feb-2019 how do I set a condition to replace the value "Mar" = "03" and "Feb" = "02" in df$Date?So that the output will be:SN Date 1 07-03-2019 2...
View ArticleCross validation in R vs scikit-learn for linear regression R2
I have a simple linear regression model as such:Y = Mean_energy , X = A + BMy dataset consist of only 20 rows.Therefore, to obtain R2 of the model, I did a 5-fold cross validation (cv).To do cv in...
View Articleconverting month and day column to corresponding numbers in R and divide...
I am reading data from UCI repository into table.forestfire <- read.table(file = "http://archive.ics.uci.edu/ml/machine-learning-databases/forest-fires/forestfires.csv", header = TRUE, sep = ',')...
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Plot has several small graphs on one page
How do I plot only one graph on each page? The plot function plots graph on one page like in the screenshot until it's full. Thanks in advance!
View ArticleCount food types by state in R
I would like to find the number of food types sold in each state. So count food per state using R. This requires me to compare between two variables in my dataset. How would I code for this in R?
View ArticleSending R Markdown output as body email via outlook (RDCOMclient) - R version...
I use this exact code (Sending R Markdown output as body email via outlook (RDCOMclient)) and it worked just fine, until I update my version of R to 3.6.1. I also tried the 3.5 version of RDCOMClient...
View ArticleHow to get classification values in RWeka?
can anybody explain how I get the results of each leave in a decision tree made by J48 from the RWeka package?So for example we have this iris dataset in R: library(RWeka) m1 <- J48(Species ~ .,...
View Articlesplit the superhero names with their ages in the given vector
Given this vector: vector <- c("Superman1000", "Batman35", "Wonderwoman240") I want to split the superhero's name and age.df=data.frame(vector= c("Superman1000", "Batman35", "Wonderwoman240"))...
View ArticleVariable number of arguments in r decision tree
Thanks for any help - I'm building a decision tree in R, and the classic example isiris_ctree <- ctree(Species ~ Sepal.Length + Sepal.Width + Petal.Length + Petal.Width, data=iris)My question is:...
View Articlefor loop transferring to foreach in R language
I am trying to find a connection between for loop and foreach function, but all the examples are so basic that I am lost in my huge loop. Can someone help me to understand how to make it?I have these...
View ArticleHow to make different font sizes on graphs with specific point sizes
I'm trying to get specific font sizes for scatterplots based of Nature guidelines. I'm told to keep all my point sizes for text at 7 so I've used par(ps = 7). However, I need a different font size for...
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Labels overlapping on Stacked bar chart ggplot2
The code below generates an appropriately stacked bar chart. However, I am trying to add labels to show the percentage in each fill location. With the code below, the percentage labels do not align...
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ggplot - geom_segment() with mutiple arrows
I am working on Principal Component Analysis (PCA). I found ggfortify works great but would like to do some manual adjustments.Here then trying to plot the PCA results as below: evec <-...
View Articlesession not created: This version of ChromeDriver only supports Chrome...
I'm trying to run RSelenium using the rsDriver function, but when I run rD <- rsDriver() I get a message telling me I need a newer version of Chrome:> rD <- rsDriver() checking Selenium Server...
View ArticletwListToDf function not found in TwitteR Package (R)
I would like to enquire why my program couldn't work as I have manually installed the twitteR package.library(twitteR) setup_twitter_oauth(api_key, api_secret, access_token, access_secret) no_of_tweets...
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Using existing lines as geom_ribbon() min and max
So I have three lines that I'm charting. The upper and lower lines are the confidence interval, so I'd like to use geom_ribbon() to fill in the area between the lines with color. But I haven't been...
View ArticlefPortfolio: Error when running LPM optimization
When I run a meanLPM optimization I get the following error:Error in match.fun(spec@model$param$tau) : 'spec@model$param$tau' is not a function, character or symbolI have already set the estimator to...
View Articlereadxl::read_xls returns "libxls error: Unable to open file"
I have multiple .xls (~100MB) files from which I would like to load multiple sheets (from each) into R as a dataframe. I have tried various functions, such as xlsx::xlsx2 and...
View Articlemanipulating glue-generated title on my gganimate
I have created a basketball animation using gganimate, as seen below. You can get the full animation on my blog post (Look at animation under "Paul Pierce Isolation").NBA AnimationNow, there is one...
View ArticleUpdate R base - Ubuntu from 3.4.4 to 3.5.2 - Azure
I'm using Ubuntu 16.04 on Azure Linux Virtual Machinelsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.5 LTS Release: 16.04 Codename: xenial The current R...
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