Publications by Iñaki Úcar
{rspm}: easy access to RSPM binary packages with automatic management of system requirements
There are many community projects out there that provide binary R packages for various distributions. You may know Michael Rutter’s legendary c2d4u.team/c2d4u4.0+ PPA, but this situation has been greatly improved more recently with Detlef Steuer’s autoCRAN OBS repo for OpenSUSE, my iucar/cran Copr repo for Fedora, and Dirk Eddelbuettel’s r2...
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simmer 3.6.1
A new patch release of simmer, the Discrete-Event Simulator for R, is on CRAN. Three months have passed since the last release. The last year was a period of intense development (one release per month). Now, the package has reached some level of maturity, so we intend to extend the release cycle. In this maintenance release, the replacement opera...
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errors 0.0.1
In physics, engineering and other disciplines, a single number, a bare quantity, is useless, meaningless. When you measure something, your results will be within the precision of your equipment, and then you need to propagate those errors up to whatever final indirect measure you are interested in. Finally, you need to express it properly. For in...
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Load a Python/pandas data frame from an HDF5 file into R
The title is self-descriptive, so I will not dwell on the issue at length before showing the code. Just a small note: to my knowledge, there is only one public snippet out there that addresses this particular problem. It uses the Bioc package rhdf5 and you can find it here. The main problem is that it only works when the HDF5 file contains a ...
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x + x is not 2x
A few days ago, Joel Courtheyn posted the following issue in the errors package repository on GitHub: Experimenting with the new package I detected a difference in calculation of the error depending on the way a formula was written. Originally I tried to calculate the error for z1 <- (x^3 - 2y)/x^0.5 but this gave me a value which was different ...
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simmer 3.6.2
The second update of the 3.6.x release of simmer, the Discrete-Event Simulator for R, is on CRAN, thus inaugurating a bi-monthly release cycle. I must thank Duncan Garmonsway (@nacnudus) for creating and now maintaining “The Bank Tutorial: Part I” vignette, Franz Fuchs for finding an important and weird memory bug (here) that prevented simmer...
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constants 0.0.1
The new constants package is available on CRAN. This small package provides the CODATA 2014 internationally recommended values of the fundamental physical constants (universal, electromagnetic, physicochemical, atomic…), provided as symbols for direct use within the R language. Optionally, the values with errors and/or the values with units a...
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Programming with dplyr by using dplyr
The title may seem tautological, but since the arrival of dplyr 0.7.x, there have been some efforts at using dplyr without actually using it that I can’t quite understand. The tidyverse has raised passions, for and against it, for some time already. There are excellent alternatives out there, and I myself use them when I find it suitabl...
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simmer 3.6.3
The third update of the 3.6.x release of simmer, the Discrete-Event Simulator for R, is on CRAN. First of all and once again, I must thank Duncan Garmonsway (@nacnudus) for writing a new vignette: “The Bank Tutorial: Part II”. Among various fixes and performance improvements, this release provides a way of knowing the progress of a simulati...
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simmer 3.6.4
The fourth update of the 3.6.x release of simmer, the Discrete-Event Simulator for R, is on CRAN. This release patches several bugs regarding resource priority and preemption management when seized amounts greater than one were involved. Check the examples available in the corresponding issues on GitHub (#114, #115, #116) to know if you are af...
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