search for: 7cj

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2017 Nov 22
3
Tibble o data.table?
...hacer compatibles con este esquema "tidyverse" ("tidytext", "tidyquant", hasta el mismo "sparklyr"). Gracias, Carlos Ortega www.qualityexcellence.es<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qualityexcellence.es&data=02%7C01%7Cj.para.fernandez%40hotmail.com%7C6c89c3a810f24aebef8408d531ec3e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636469813071210024&sdata=7xIo1ziqT0P2%2FjCSbXT%2Fsl4WqKElhFhTUOqcny7riR0%3D&reserved=0><https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qualityexcellence.e...
2017 Nov 22
3
Tibble o data.table?
...hacer compatibles con este esquema "tidyverse" ("tidytext", "tidyquant", hasta el mismo "sparklyr"). Gracias, Carlos Ortega www.qualityexcellence.es<https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qualityexcellence.es&data=02%7C01%7Cj.para.fernandez%40hotmail.com%7C1ec53787fa774b89b75108d531e7b193%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636469793538852484&sdata=ynjSePt%2B7%2B4hjxRlVetzbh37RmBUCVW8BaBYC0GqY8Y%3D&reserved=0> El 22 de noviembre de 2017, 10:39, Jesús Para Fernández <j.para.fernandez en hotmail.co...
2017 Nov 16
3
Manera eficiente de añadir el valor anterior por grupo
Buenas Tengo un Data table de la siguiente manera: datos<-data.table(grupo=rep(c("a","b"),5),x=c(1:10),y=rnorm(10,2,1)) Lo que quiero es añadir una fila por cada grupo y en esa nueva fila, al valor de la x ponerle el valor anterior de la y Lo que hago es añadir una nueva fila por grupo, con: datos[,.SD[1:(.N+1)],by=grupo] Y para añadir el valor anterior uso la función
2020 Feb 27
1
RIOT 2020
...he hood of R. >> >> Regards, >> Stepan Sindelar, Lukas Stadler (Oracle Labs), Jan Vitek (Northeastern), >> Alexander Bertram (BeDataDriven) >> >> [1] https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Friotworkshop.github.io%2F&amp;data=02%7C01%7Cj.vitek%40northeastern.edu%7C649169c229e1438e351808d7bb05473a%7Ca8eec281aaa34daeac9b9a398b9215e7%7C0%7C0%7C637183503671619822&amp;sdata=pATfh3Mmv%2FT1UvElIczwLpf4dzg7jEo0M249m6xa0Dg%3D&amp;reserved=0 >> >> ______________________________________________ >> R-devel at r-proje...
2017 Nov 22
2
Tibble o data.table?
Buenas Os queria preguntar que ventaja le veis a las tibbles frente a los data.table, ya que para mi, quitando el uso de librerias como tidyr o purrr, en el resto prefiero usar data.table. Me parece igual de potente y mucho más rápido, y no le veo las supuestas ventajas, pero quiero conocer vuestra opinion. Gracias Jesús [[alternative HTML version deleted]]
2020 Feb 25
3
RIOT 2020
I hope you don?t mind us using this mailing list for a small advertisement, but we think it is most relevant for this group: We'd like to invite you to RIOT 2020 - the 5rd workshop on R Implementation, Optimization and Tooling [1]. It will take place co-located with, and during, useR! 2020 in St. Louis on July 8th. RIOT is an excellent venue for deep technical discussions about R
2017 Nov 28
5
Búsqueda de palabras en una variable de R
Buenas, Tengo un vector de 40 palabras (marca) y necesito saber si en una de las variables del data.frame (datos) se incluye alguna de esas 40 palabras. Si se incluye alguna de ellas, me gustaría crear una variable dummy siendo 1 que incluye alguna palabra y 0 que no incluye. ¿Qué paquete me recomendáis? ¿Cuál sería el comando a ejecutar? Gracias!
2019 Mar 04
0
Should CRAN accept packages with non-R code that transcompiles into R code?
...ask them. > However, I thought that I would ask here first. > > ______________________________________________ > R-devel at r-project.org mailing list > https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-devel&amp;data=02%7C01%7Cj.vitek%40northeastern.edu%7C65c14d53fbc44634f88508d6a0f9151d%7Ca8eec281aaa34daeac9b9a398b9215e7%7C0%7C0%7C636873389038367455&amp;sdata=vrZX4jUoakFB%2FRBG6aTjpYsw4fv4NfvIszOxNLhb7Rs%3D&amp;reserved=0
2019 Mar 05
1
Should CRAN accept packages with non-R code that transcompiles into R code?
On Tue, Mar 5, 2019 at 12:49 PM jan Vitek <vitekj at icloud.com> wrote: > Everything is possible. One can compile C++ into JavaScript. > > But why? > > I would like to support Java style syntax for class definitions. (Then it could transcompile into either S3 or S4). And possibly change some other things while I'm at it. Maybe, integers (rather than numerics) as
2019 Mar 04
4
Should CRAN accept packages with non-R code that transcompiles into R code?
It may be possible to create an R-like programming language that transcompiles into R code (or otherwise constructs R objects and calls R functions). I'm not sure whether it would pass R check or not, I will probably try... But the bigger question is: Should CRAN accept packages written in such a way? I could email Kurt Hornik or Uwe Ligges, and ask them. However, I thought that I would ask
2016 Oct 19
3
[PATCH 0/2] builder: Add test that a serial console is set up for guest templates we supply.
The first of two sets of patches. This checks that the templates we supply have the serial console enabled, or in two cases, that the serial console can be enabled by fiddling with some grub config. The second set of patches (to follow) will test that the --password and --root-password options work. This implementation of this is quite complex. Rich.