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Hello Rails, I have a problem. I would like to use captcha in one of my project. When I did try to install, this is what I got $ sudo gem install captcha Building native extensions. This could take a while... ERROR: Error installing captcha: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb extconf.rb:1:in `require'': no such file to load -- mkmf (LoadError)

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]]

...gt; m + n) temprow41 <- select.rows(row1, row1 > m + 2 * n) outmat88[i, 1] <- max(row1, na.rm = T) outmat88[i, 2] <- count.rows(temprow37) outmat88[i, 3] <- count.rows(temprow39) outmat88[i, 4] <- count.rows(temprow41) } outmat88 We have transferred the data to a more potent Linux box running R, but still hope to speed up the code. I know a for loop should be avoided when looking for speed. I also know the answer is in something like tapply, but my understanding of these commands is still to limited to see the solution. Could someone show me the way!? Thanks in a...

Wow, I think that was the first really potent flamewar we've had on llvmdev. Looking on the positive side, I think this shows that the llvm community is growing and drawing interest from new people with new perspectives. This is a good thing. I want to thank everyone who was courteous in their response. As others have said, it is r...

...ation with the less varibles and the y. It is better to use less indepent varibles. that is how can I select my indepent varibles. Maybe GA is good method, but now I donot gasp it. and can you give me more good varibles selection's methods. and In R, which method can be used to select the potent varibles . and using the selected varibles to model a equation with higher r2, q2,and less RMSP. thank you! -- View this message in context: http://old.nabble.com/variable-selectin---reduce-the-numbers-of-initial-variable-tp26195345p26195345.html Sent from the R help mailing list archive at Nabb...

Hey all, I get an undefined method `join'' for #<String NoMethodError. student.rb has_one :student_fail attr_accessor :student_fail_attribute #controller def student_fail @student = @student.find params[:id] def update_student_fail @student.build_student_fail params[:student][:student_fail_attribute] if @student.save #view form_for @student do |f|

...er a "system" command, but that was too slow). I finally figured out a way to communicate with UDP through R, and it works fine (using the "system" command) - it's also fast. (1) install software "socat" (available on most of the Linux repositories). It's potent software for communication stuff, btw. (2) set up the UDP 'port' to communicate with (like in a separate software package for passing commands and responses back and forth). (3) use the "system" command to send messages - as an example: system("echo \"quit\"| soc...

...el máximo rendimiento en R. He visto que hay dos o tres comandos: memory.size(max=TRUE) memory.limit = ... El caso es que si uso memory.size(max=TRUE) el maximo que me imprime por pantalla es bastante mayor en un equipo que tengo con windows xp a 32 bits que en el nuevo equipo que es bastante más potente. Saludos [[alternative HTML version deleted]]

...P. Ennis wrote: >> I have not been able to get it to work Centos 7.4 machine.? Some of the >> ? centos user posts had indicated the nux repsitory had a Centos 7 kmod- >> wl, but it is not present when I tried to search or or install it at >> this time. > > this looks potentionally helpful > > http://elrepo.org/tiki/wl-kmod > > it appears those are closed source drivers with funky licenses, so they > can't just be redistributed without assumption of liability. > > Correct, elrepo isn't able to freely redistribute the drivers due Broa...

...healthy. So, how do you all handle the Debian, IIRC, two year cycle? Do Debian upgrades go off pretty smoothly, so you have a 99% chance of moving from, say, jessie to stretch without any hassles other than mostly "apt-get distro upgrade" or whatever it is? Some of that angst gets less potent as more stuff moves to VM's etc. But even then, it's not a totally trivial concern either. --- But given what you say about this release just happening to work on 18.04 - makes me think we should absolutely not rely on any future version functioning on 18.04. Correct? We might get lucky or...

Everyone, I just purchased a new wfi card?that is identified as using lspci as : Broadcom Limited BCM4360 802.11ac Wireless Network Adapter (rev 03) I have not been able to get it to work Centos 7.4 machine. Some of the centos user posts had indicated the nux repsitory had a Centos 7 kmod- wl, but it is not present when I tried to search or or install it at this time. Has anyone had any

Otra opción es importar directamente los datos que necesites usando XLConnect (sin llevarlos a CSV). Ese paquete permite hacer cosas muy potentes desde el propio fichero de Excel. https://cran.r-project.org/web/packages/XLConnect/index.html Recomiendo, encarecidamente, la lectura de sus dos vignettes. Un Saludo, -- Miguel Ángel Rodríguez Muíños Dirección Xeral de Saúde Pública Consellería de Sanidade Xunta de Galicia http://dxsp.sergas...

....para.fernandez en hotmail.com<mailto:j.para.fernandez en hotmail.com>> escribió: 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]] _______________________________________________ R-help-es mailing list R-help-es en r-project.org<mailto:R-help-es en r-project.org> htt...

Hola. Últimamente ha habido en la lista varios hilos sobre análisis de grandes volúmenes de datos con R. Las alternativas que se han mencionado son: - Usar una máquina más potente, vía Amazon Web Services, por ejemplo - Paralelización con openMp - h2o y su paquete para R, - Paquete sparklyr como wrapper de los algoritmos de spark, Y por supuesto, utilizar muestreo o incluso si tenemos grandes volúmenes de datos, utilizar varias muestras para ajustar los modelos. A tod...

hy all actually i want to have a setup of five offices having round about 200 extensions ( each office having 35 to 45 ) which will be connected through asterisk. now either i should go for voip phones( hard phones ). or use any interface card to asterisk server to which the analogue phones will be connected. ----- if i use analogue phones in the above case ( we have analogue phones already )

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....4 machine.? Some of >>>> the >>>>?? centos user posts had indicated the nux repsitory had a Centos 7 >>>> kmod- >>>> wl, but it is not present when I tried to search or or install it at >>>> this time. >>> >>> this looks potentionally helpful >>> >>> http://elrepo.org/tiki/wl-kmod >>> >>> it appears those are closed source drivers with funky licenses, so >>> they can't just be redistributed without assumption of liability. >>> >>> >> >> Correct...

Estimados: Tengo un directorio con varios archivos Excel quiero importarlos todos y grabarlos en un único archivo .dbf. Haciendolo uno por uno lo logro de la siguiente manera (solo tomo 2 archivos): archivos <- list.files(pattern = 'xls') a1 <- read.xls(archivos[1], perl="C:\\strawberry\\perl\\bin\\perl.exe",skip=12,dec=",",header=F,as.is=T) a2 <-