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Hola miembros de la lista, Estoy buscando una manera de elaborar tareas o examenes interactivos para mis clases de estadística con R. He visto 2 paquetes muy interesantes que son, learnr y gradethis, pero todavía no logro entender completamente su dinámica. Por lo que entiendo, en gradethis si el estudiante se equivoca tiene la posibilidad de reintentar hasta dar con la solución, lo cual no lo hace muy apropiado para una trea o examen que luego se debe calificar. Se que hay conex...

Muchas gracias Emilio. Sí, yo cometí un error, veo exams puede usar Rmarkdown también. Manuel El dom., 29 mar. 2020 a las 9:11, Emilio L. Cano (<emilopezcano en gmail.com>) escribió: > Manuel, > > No conozco learnr ni gradethis, pero simplemente como apunte decirte que > con exams puedes utilizar Rmarkdown. > > Un saludo, > > Emilio L. Cano > http://emilio.lcano.com > > > > > El 29 mar 2020, a las 15:52, Manuel Spínola <mspinola10 en gmail.com> > escribió: > > &...

Hi, all, I am currently trying to learn this example. http://learnr.wordpress.com/2009/03/17/ggplot2-barplots/ I created the stack bar easily. If I would like to rank the stack bar from the highest on the right, shortest on the left and eventually I could show the data "1991-00" on the left and "1823-30" on the right, how could I do that?...

Hi, all, I am a newbie for [r]. I am currently trying to learn this example. /http://learnr.wordpress.com/2009/03/17/ggplot2-barplots// /http://learnr.wordpress.com/2009/03/17/ggplot2-barplots/ / After I made a drawing /c <- b + facet_grid(Region ~ .) + opts(legend.position = "none") / If I want to make the axis.text.x (I don't want to mix with axis labels, so I type...

On 24/04/2016 4:30 PM, Jason Hernandez via R-help wrote: > I am just beginning to learn R, using _R for Dummies_ by Andrie de Vries and Joris Meys. I am using Windows 7, and RGui (64-bit) version 3.0.2. I have reached the chapter on "Getting Data Into and Out of R." But the code they use for importing data doesn't seem to be working for me. > > Their example is:> elements

I'm trying to reproduce the 3rd graph on the page of this site: http://learnr.wordpress.com/2009/03/17/ggplot2-barplots/ . However, the data below produces a ggplot with the stacks sorted in alphabetical order from the bottom up. I'd like the stacks to be in the order "Europe", "Asia", "Americas, "Africa", "Oceania". Is there...

...umn of my table contains all of the phylum names I observed in a set of 6 water samples and each of the columns to the right contains the relative abundance (%) of each phylum in each water sample. I have tried constructing a heatmap using the ggplot guidelines listed at the following site: http://learnr.wordpress.com/2010/01/26/ggplot2-quick-heatmap-plotting/ I can generate a heatmap using this method, but would like to alter the scale. I would like it so that I can have a little more complex gradient ranging from 0% to the highest relative abundance that I observe in the above table (65.1%). T...

...dated this morning and from CRAN it looks like the Mac version is the only one at 0.9.0 as of right now. http://cran.r-project.org/web/packages/ggplot2/index.html Anyway, I was in the midst of a project where I was trying to replicate "Back-to-back Bar Charts" in this blog post. http://learnr.wordpress.com/2009/09/24/ggplot2-back-to-back-bar-charts/ My project and the example in the blog post no longer work with 0.9.0. I just want to figure out how to fix the blog example, and then make the same changes to my own work. So this is the output: > library(ggplot2) > library(plyr)...

I am just beginning to learn R, using _R for Dummies_ by Andrie de Vries and Joris Meys. I am using Windows 7, and RGui (64-bit) version 3.0.2. I have reached the chapter on "Getting Data Into and Out of R." But the code they use for importing data doesn't seem to be working for me. Their example is:> elements <- read.csv(file.path("f:", "elements.csv"))

I am using R 2.11.1 in a Microsoft Windows 7 environment.   I tried using WriteXLS, but get the message " In system(cmd) : perl not found"   What is the "easiest" way to write an R dataframe to Excel?  (I am familiar with WriteXLS, but I do not have PERL installed, and if not needed, do not wish to install it.)   I am also familiar with write.table, but if possible, wish to

Buenos días: A ver si alguien me puede iluminar, porque ya he sobrepasado los límites de mi paciencia y de mi imaginación con este asunto: Dado un gráfico creado con un plot (y funciones auxiliares como polygon, etc.) y una tabla creada debajo de ese gráfico (creada con addtable2plot), y dados unos text situados a modo de título encima del plot y otros encima de la tabla, ¿por qué cuando trato

I have three plots and I want the *plot area* to be of the same width on each plot. Since the three plots have different legends, the text width of the legend affects the width of the plot area (longer legend text = narrower plot area). Exporting the three figures to postscript device of same size gives thus unequal plot areas. How can I calculate the correct width of postscript device for each

Basially I have the observation for x, y, and z for each fixed z, the value of y moves from 0 to y0 as x moves from 0 to x0. I then move the curve for z from 0 to z0 and form a continuous surface. want to know if there is a way that R can replace my handdrawing. -------------- next part -------------- A non-text attachment was scrubbed... Name: draw0001.pdf Type: application/pdf Size: 292083

...inish the outline: 2-3 weeks if you only continue through the GUI interface (menu) portion, perhaps 6-8 weeks including more advanced statistical analyses. Links: You can register at http://www.fort.usgs.gov/brdscience/courseRegister.aspx The course website: http://www.fort.usgs.gov/brdscience/learnR.htm Last year's course website: http://www.fort.usgs.gov/brdscience/learnR08.htm The course is presented by the US Geological Survey, Status and Trends Program (Paul Geissler, Paul_Geissler@usgs.gov) and the National Park Service, Inventory and Monitoring Program (Tom Philippi, Tom_Philipp...

How do I reverse the order of the legend in a bar plot to match order of the x-axis? In other words, I want the stacked colors of the legend to match the stacked colors of the bar plot. I tried this, but it didn't work. colors <- c("5" = "red","4" = "blue","3" = "darkgreen") p <- qplot(factor(cyl), data=mtcars,

Hello all , I am beginner and new to this -R world. I have heard much about R and started working on it. I have some data of 20 business applications( y -axis) and Months( x-axis) and values as their score for every month . I tried to generate a heatmap with this data and got some good results. Can some one help me on how to generate the legend next to heatmap please... can some one send me

I am stuck at the following problem. I have two moving averages. One is faster than another. After plotting them I need to shade area between them in green when the faster is above slower and red where faster is below slower. Something like this: http://charts.stocktwits.com/production/original_9205513.png?1345576091 I tried with polygon but I can't do it. Any hints? Regards olo -- View

I would like to learn AsciiDoc. Is there any good examples how to use AsciiDoc with R? I know that there is packages called ascii to do this, but it would be nice to see some examples how AsciiDoc works with R. Is there an AsciiDoc distribution for Max OS X? -Johannes

Hey guys, I'd really appreciate any help. I have a multivariate analysis done, the output of which is: > GraphData <-read.table("eigen.coa") > GraphData V1 V2 V3 V4 1 1 0.371970 0.8552 0.8552 2 2 0.061785 0.1420 0.9972 3 3 0.001211 0.0028 1.0000 4 4 0.000000 0.0000 1.0000 > summary(GraphData) V1 V2 V3

Hi all, A friend just sent me this: http://www.mathworks.com/company/events/webinars/index.html?id=&language=en <http://www.mathworks.com/company/events/webinars/index.html?id=&language=en>And asked me if there is something of the like in the R community. Does anyone know of such a think ? Cheers, Tal ----------------Contact