Publications by R on msperlin
Update to GetLattesData
Last year I released GetLattesData. This package is very handy for anyone that researches bibliometric data of Brazilian scholars. You could easily import the whole academic history of any researcher registered at the platform. More details about Lattes and GetLattesData in the this post. However, a couple months ago CNPQ introduced a captcha in ...
1808 sym R (3561 sym/6 pcs) 2 img 1 tbl
New package in CRAN: PkgsFromFiles
Its been a while since I develop a CRAN package and this weekend I decided to work on a idea I had some time ago. The result is package PkgsFromFiles. When working with different computers at home or work, one of the problems I have is installing missing packages across different computers. As an example, a script that works in my work computer m...
3073 sym R (3345 sym/5 pcs) 2 img
Loops and Pizzas
Loops in R First, if you are new to programming, you should know that loops are a way to tell the computer that you want to repeat some operation for a number of times. This is a very common task that can be found in many programming languages. For example, let’s say you invited five friends for dinner at your home and the whole cost of four pi...
5408 sym R (4658 sym/11 pcs)
Some Useful Tricks in RStudio
I’ve been using Rstudio for a long time and I got some tricks to share. These are simple and useful commands and shortcuts that really help the productivity of my students. If you got a suggestion of trick, use the comment section and I’ll add it in this post. Package rstudioapi When using Rstudio, package rstudioapi gives you lots of inform...
3603 sym R (660 sym/5 pcs) 8 img
New blog site: From Jekyll to Hugo
I while ago I wrote about purchasing my own webserver in digital ocean and hosting my shinny applications. Last week I finally got some time to migrate my blog from Github to my new domain, www.msperlin.com. While doing that, I also decided to change the technology behind making the blog, from Jekyll to Hugo. Here are my reasons. Jekyll is great ...
2466 sym
Looking back at 2018 and plans for 2019
At the end of every year I plan to write about the highlight of the current year and set plans for the future. First, let’s talk about my work in 2018. Highlights of 2018 Research wise, my scientometrics paper Is predatory publishing a real threat? Evidence from a large database study was featured in many news outlets. Its altmetric page is do...
6121 sym R (3733 sym/3 pcs) 2 img
GetDFPData Ver 1.4
I just released a major update to package GetDFPData. Here are the main changes: Naming conventions for caching system are improved so that it reflects different versions of FRE and DFP files. This means the old caching system no longer works. If you have built yourself your own cache folder with many companies, do clean up the cache by deleting ...
1891 sym
Book promotion – “Processing and Analyzing Financial Data with R”
Cover I recently did a book promotion for my R book in portuguese and it was a big sucess! My english book is now being sold with the same promotion. You can purchase it with a 50% discount if you buy it on the 10th day of march. See it here. The discount will be valid throughout the week, with daily price increases. If you want to learn more ab...
1187 sym 2 img
(2/2) Book promotion (paperback edition) – “Processing and Analyzing Financial Data with R”
I received many messages regarding my book promotion (see previous post ). I’ll use this post to answer the most frequent questions: Does the paperback edition have a discount? No. The price drop is only valid for the ebook edition but not by choice. Unfortunately, Amazon does not let me do countdown promotions for the paperback edition. So, i...
1404 sym
Can you turn 1,500 R$ into 1,000,430 R$ by investing in the stock market?
In the last few weeks we’ve seen a great deal of controversy in Brazil regarding financial investments. Too keep it short, Empiricus, an ad-based company that massively sells online courses and subscriptions, posted a YouTube ad where a young girl, Bettina, says the following: Hi, I'm Bettina, I am 22 years old and, starting with R$ 1,500, I no...
4500 sym R (9298 sym/5 pcs) 4 img 1 tbl