Publications by Econometrics and Free Software
Lesser known dplyr 0.7* tricks
This blog post is an update to an older one I wrote in March. In the post from March, dplyr was at version 0.50, but since then a major update introduced some changes that make some of the tips in that post obsolete. So here I revisit the blog post from March by using dplyr 0.70. Create new columns with mutate() and case_when() The basic things ...
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tidyr::spread() and dplyr::rename_at() in action
I was recently confronted to a situation that required going from a long dataset to a wide dataset, but with a small twist: there were two datasets, which I had to merge into one. You might wonder what kinda crappy twist that is, right? Well, let’s take a look at the data: data1; data2 ## # A tibble: 20 x 4 ## country date varia...
1615 sym R (4638 sym/4 pcs)
tidyr::spread() and dplyr::rename_at() in action
I was recently confronted to a situation that required going from a long dataset to a wide dataset, but with a small twist: there were two datasets, which I had to merge into one. You might wonder what kinda crappy twist that is, right? Well, let’s take a look at the data: data1; data2 ## # A tibble: 20 x 4 ## country date varia...
1615 sym R (4638 sym/4 pcs)
tidyr::spread() and dplyr::rename_at() in action
I was recently confronted to a situation that required going from a long dataset to a wide dataset, but with a small twist: there were two datasets, which I had to merge into one. You might wonder what kinda crappy twist that is, right? Well, let’s take a look at the data: data1; data2 ## # A tibble: 20 x 4 ## country date variable_...
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Why I find tidyeval useful
First thing’s first: maybe you shouldn’t care about tidyeval. Maybe you don’t need it. If you exclusively work interactively, I don’t think that learning about tidyeval is important. I can only speak for me, and explain to you why I personally find tidyeval useful. I wanted to write this blog post after reading this twitter thread and spe...
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Why I find tidyeval useful
First thing’s first: maybe you shouldn’t care about tidyeval. Maybe you don’t need it. If you exclusively work interactively, I don’t think that learning about tidyeval is important. I can only speak for me, and explain to you why I personally find tidyeval useful. I wanted to write this blog post after reading this twitter thread and spe...
2977 sym R (302 sym/3 pcs)
Why I find tidyeval useful
First thing’s first: maybe you shouldn’t care about tidyeval. Maybe you don’t need it. If you exclusively work interactively, I don’t think that learning about tidyeval is important. I can only speak for me, and explain to you why I personally find tidyeval useful. I wanted to write this blog post after reading this twitter th...
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Easy peasy STATA-like marginal effects with R
Model interpretation is essential in the social sciences. If one wants to know the effect of variable x on the dependent variable y, marginal effects are an easy way to get the answer. STATA includes a margins command that has been ported to R by Thomas J. Leeper of the London School of Economics and Political Science. You can find the source cod...
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Functional peace of mind
I think what I enjoy the most about functional programming is the peace of mind that comes with it. With functional programming, there’s a lot of stuff you don’t need to think about. You can write functions that are general enough so that they solve a variety of problems. For example, imagine for a second that R does not have the sum() functi...
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Teaching the tidyverse to beginners
End October I tweeted this: will teach #rstats soon again but this time following @drob 's suggestion of the tidyverse first as laid out here: https://t.co/js8SsUs8Nv— Bruno Rodrigues (@brodriguesco) October 24, 2017 and it generated some discussion. Some people believe that this is the right approach, and some others think that one should firs...
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