[This article was first published on R on Data & The World, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. The magrittr package is a part of the … Read more
[This article was first published on RStudio Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Photo by Clay Banks on Unsplash RStudio is dedicated to our mission … Read more
[This article was first published on R – rud.is, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. RStudio is continuing to refine their new product version string scheme, … Read more
TL;DR: Please help us by filling out the survey at https://forms.gle/nq9RmbxJyZXQgc948. It’s been almost 3 years since the first edition of Geocomputation with R was published back in 2019. It’s been an amazing journey for this open source book on geographic data analysis, visualization and modeling since then. We have reached almost 500k people via … Read more
[This article was first published on The Shape of Code » R, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Circular statistics deals with analysis of measurements made … Read more
Running into errors and warnings is a completely normal part of programming – even the best of the best can count on it happening daily! Getting comfortable with what the errors mean and how to find the solution is part of your learning journey. Here’s a checklist (pdf /jpg) with some common errors you’ll encounter. … Read more
[This article was first published on R | datawookie, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. When writing an R package I usually write a README.Rmd file … Read more
If you haven’t, you should read this first. This is part two. Speedrunning is the… hrm… – sport? art? – of playing games from start to finish as fast as possible. Speedrunning requires an insane amount of knowledge of the game being played, as well as an enourmous amount of skill. Also, contrary to what … Read more
[This article was first published on Rcpp Gallery, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Simulation smoothing involves drawing latent state variables in discrete-time state–space models from … Read more
[This article was first published on R-posts.com, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. By Xiaotong Ding (Claire), With Greg Page A practical tool that enables a … Read more
[This article was first published on Methods – finnstats, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Sample Size Calculation and Power, One of the most important stages … Read more
The past few weeks I have been exploring the speed of R. It started with this video in which I explained that R is not necessarily slower than any other interpreted language, as long as you’re using the built-in, optimized functions. However should you write your own implementation of an algorithm, especially if that algorithm … Read more
Predefinitions We define a divergent vector of various hues. col_temp <- c(“#cbebf6″,”#a7bfd9″,”#8c99bc”,”#974ea8″,”#830f74″, “#0b144f”,”#0e2680″,”#223b97″,”#1c499a”,”#2859a5″, “#1b6aa3″,”#1d9bc4″,”#1ca4bc”,”#64c6c7″,”#86cabb”, “#91e0a7″,”#c7eebf”,”#ebf8da”,”#f6fdd1″,”#fdeca7″, “#f8da77″,”#fcb34d”,”#fc8c44″,”#f85127″,”#f52f26″, “#d10b26″,”#9c042a”,”#760324″,”#18000c”) We create a table with the x-axis grid lines. grid_x <- tibble(x = seq(ymd(“2000-01-01”), ymd(“2000-12-31”), “month”), y = rep(-10, 12), xend = seq(ymd(“2000-01-01”), ymd(“2000-12-31”), “month”), yend = rep(41, 12)) We define all the style elements of the graph … Read more
[This article was first published on R on kieranhealy.org, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. I updated the covdata package for the first time in a … Read more
[This article was first published on R – Open Forecasting, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. My PhD student, Congzheng Liu (co-supervised with Adam Letchford) has … Read more
[This article was first published on R – scottishsnow, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. I was browsing #rstats on Twitter recently and came across this … Read more
#========================================================# # Quantitative ALM, Financial Econometrics & Derivatives # ML/DL using R, Python, Tensorflow by Sang-Heon Lee # # https://kiandlee.blogspot.com #——————————————————–# # Bond Modified Duration Calculation #========================================================# graphics.off() # clear all graphs rm(list = ls()) # remove all files from your workspace #——————————————————- # Input #——————————————————- C – 0.05 # coupon rate y – 0.03 # YTM m – 5 # maturity dr – 0.000001 # interest rate change #——————————————————- # Duration by Definition (k=1) #——————————————————- # data.frame for calculation df – data.frame(T = 1:m, CF = C + c(0,0,0,0,1)) df$DF – 1/(1+y)^(df$T) df$DC – df$DF*df$CF P0 – sum(df$DC) # initial bond price df$TDC – df$T*df$DC # time * discounted CF STDC – sum(df$TDC) # duration D_mac_dk1 – STDC/P0 # Macaulay Dur D_mod_dk1 – D_mac_dk1/(1+y) # Modified Dur #——————————————————- # Duration by Numerical Differentiation (k=1) #——————————————————- df – data.frame(T = 1:m, CF = C + c(rep(0,m–1),1)) df$DFu – 1/(1+y–dr)^(df$T) df$DCu – df$DFu*df$CF Pu – sum(df$DCu) # price up df$DFd – 1/(1+y+dr)^(df$T) df$DCd – df$DFd*df$CF Pd – sum(df$DCd) # price down … Read more
How to create appropriate data visualizations using tidycharts package. There is a wide range of R packages created for data visualization, but still, something was lacking. There was no simple and easily accessible way to create clean and transparent charts — up to this day! tidychartsguarantees that your charts will be appropriate and consistent with each other. … Read more
This post is part of a series of technotes about r-universe, a new umbrella project by rOpenSci under which we experiment with various ideas for improving publication and discovery of research software in R. As the project evolves, we will post updates to document features and technical details. For more information, visit the r-universe project … Read more
A small new feature added to {emayili}: the ability to interpolate content into the email message body. Load Package Load the {emayili} package and create a message skeleton. library(emayili) options( # Always print message body. envelope_details = TRUE, # Print message from pipeline. envelope_invisible = FALSE ) # Create a message skeleton. # email <- … Read more
[This article was first published on R – scottishsnow, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. I had to produce a pdf report at work this week. … Read more
[This article was first published on R – Hosting Data Apps, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. ShinyProxy comes with free enterprise features, such as authentication … Read more
#========================================================# # Quantitative ALM, Financial Econometrics & Derivatives # ML/DL using R, Python, Tensorflow by Sang-Heon Lee # # https://kiandlee.blogspot.com #——————————————————–# # Basic R : read all csv files when these are so many #========================================================# graphics.off() # clear all graphs rm(list = ls()) # remove all files from your workspace # working directory setwd(“D:/SHLEE/blog/R/many_csv”) # directory where csv files are located path– file.path(getwd()) #——————————————————- # make a list of all file names with csv or txt ext. #——————————————————- # $ : end of file name # (csv|txt) : multiple file extentions # \\. : avoid unwanted cases such as .ccsv #——————————————————- v.filename – list.files(path, pattern=“\\.(csv|txt)$”, ignore.case = TRUE, full.names = FALSE) #——————————————————- # Test 1) read and make each data.frame #——————————————————- for(fn in v.filename) { df.each = read.csv(fn) print(fn); print(df.each) } #——————————————————- # Test 2) read and collect into one data.frame #——————————————————- df.all = do.call(rbind, lapply(v.filename, function(x) read.csv(x))) print(df.all) Favorite
[This article was first published on Methods – finnstats, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Weibull Distribution in R, Weibull Distribution was discovered by Swedish physicist … Read more
[This article was first published on Method Matters Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. In this post, we will work through a simple example of … Read more
[This article was first published on Mirai Solutions, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. We asked this question to the Community and are now ready to … Read more
[This article was first published on rstats | Julia Silge, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. This is the latest in my series of screencasts demonstrating … Read more
What defines a production-ready Shiny application? And more importantly, how do we get there? Shiny is hands down one of the best dev tools available for quick production of Proof of Concepts (PoC). But here in lies a trap. People tend to mislabel Shiny as a poor production tool because they fall for the PoC … Read more
Like many people during the COVID19 crisis, I turned to the stock market as a new hobby. Like the ignorant investor that I am, I thought it wise to hop on the cloud computing bandwagon. Hence, I bought, among others, a small position in Rackspace Technologies. A long way down Now, my Rackspace shares have … Read more
[This article was first published on Rtask, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. You can read the original post in its original format on Rtask website … Read more
A little while ago I posted here a function which was enormously useful for me (and I thought it might be for others to). At the time, I needed to cut many rasters by a multipolygon shapefile and create rasters with the result of this operation. However, recently, I provided some advice to a fellow … Read more
[This article was first published on ouR data generation, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. I’m part of a team that recently submitted the results of … Read more
Dear rOpenSci friends, it’s time for our monthly news roundup! You can read this post on our blog. Now let’s dive into the activity at and around rOpenSci! 🔗 rOpenSci HQ 🔗 Recordings of useR! 2021 Recordings of useR! 2021 are now available on the conference website. You can watch contributions by rOpenSci staff: And … Read more
[This article was first published on R Consortium, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. By Sergio Garcia Mora R4HR, formerly known as the Club de R … Read more
[This article was first published on R – Hosting Data Apps, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. ShinyProxy is one of the most popular options to … Read more
[This article was first published on RStudio Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Many organizations want to align RStudio Connect with their branding strategy. Whether … Read more
[This article was first published on RStudio Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. At RStudio we know that many data science teams leverage both R … Read more
[This article was first published on RStudio Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Photo by Eric Rothermel on Unsplash RStudio is shifting to a calendar-based … Read more
#————————————————– # 5) Multiple output with multiple key columns # while original row is preserved #————————————————– # outer lapply lt.out – lapply( # split by currency for outer lapply split(df.data, df.data$currency ), function(x){ # inner lapply y – lapply( # split by maturity for inner lapply split(x, x$maturity), function(x) { data.frame(curr = x$currency, mat = x$maturity, ws = x$ws, sum_ws = sum(x$ws))}) # concatenate inner rows do.call(rbind,y) }) # concatenate outer rows df.out – do.call(rbind,lt.out) rownames(df.out) – NULL # add another group based calculation df.out$group_wgt – df.out$ws/df.out$sum_ws print(df.out) ––––––––––––––––––––––––––––––––––––––––––––––––––– > print(df.out) curr mat ws sum_ws group_wgt 1 AUD 2y 106000000 320000000 0.3312500 2 AUD 2y 214000000 320000000 0.6687500 3 AUD 6m 213000000 213000000 1.0000000 4 CNY 6m 84000000 270000000 0.3111111 5 CNY 6m 42000000 270000000 0.1555556 6 CNY 6m 144000000 270000000 0.5333333 7 EUR 1y 250000000 2105000000 0.1187648 8 EUR 1y 1855000000 2105000000 0.8812352 9 EUR 3m 1785000000 1785000000 1.0000000 10 EUR 6m 200000000 200000000 1.0000000 11 USD 1y 112000000 112000000 1.0000000 12 USD 2y 56000000 56000000 1.0000000 13 USD 3m 285000000 741000000 0.3846154 14 USD 3m 456000000 741000000 0.6153846 Favorite
[This article was first published on R on Redwall Analytics, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Click to see R set-up code # Libraries if(!require(“pacman”)) { … Read more
[This article was first published on Methods – finnstats, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Tukey HSD Test in R, When there are three or more … Read more
[This article was first published on R on Rob J Hyndman, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. The tsoutliers() function in the forecast package for R … Read more
A Shiny UI It’s often said that if you don’t remember the experience of using an app or website, that’s a good thing. When a good app presents an experience that is seamless, users breeze right through. But at Appsilon we want our users to be conscious of the Shiny UI and their experience – … Read more
[This article was first published on Methods – finnstats, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Dunnett’s test in R, After the ANOVA test has been completed … Read more
We are launching a competition to celebrate the Enterprise Applications of the R Language Conference taking place from the 6-10th of September 2021. You have the chance to win a 2-day training course for you and up to 9 other attendees from your company. The winner can select either ‘Intro the R for analytics’ or … Read more
[This article was first published on RStudio Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. This is a guest post by Colin Gillespie from Jumping Rivers, a … Read more
[This article was first published on R on R (for ecology), and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Evolution by natural selection is a powerful process that … Read more
[This article was first published on Pachá, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. This is not a competition, is just to show how to use the … Read more
[This article was first published on R – Hosting Data Apps, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don’t. Any app at any scale: use one of the … Read more
The opening keynote at the Enterprise Applications of the R Language Conference presentation day will be Dr Branka Subotić. Branka has over 15 years of experience in the aviation industry and she has worked for NATS for 12+ years. Branka will be joining Jacqueline Nolis as our second keynote speaker at EARL. The presentation day … Read more