search for: test_df

R can have a bit of a learning curve... There are several ways to achieve your goal - depending on what you want: test_df <- data.frame(Movie = letters, some.value = rnorm(26)) test_df$Movie[1:10] test_df$Movie[sample(c(1:26), 10)] test_df[sample(c(1:26), 10), ] Do read a tutorial or two on R - "Introduction to R" as suggested by David or something else - so you can explain the code above to yourself....

Hello, Also tail(test_df$Movie, 10) Hope this helps, Rui Barradas Em 05-11-2017 19:18, Ulrik Stervbo escreveu: > R can have a bit of a learning curve... There are several ways to achieve > your goal - depending on what you want: > > test_df <- data.frame(Movie = letters, some.value = rnorm(26)) > >...

HI lily, for the colouring of individual points you can set the colour aesthetic. The ID is numeric so ggplot applies a colour scale. If we cast ID to a factor we get the appropriate colouring. test_df <- data.frame(ID = 1:20, v1 = rnorm(20), v2 = rnorm(20), v3 = rnorm(20)) ggplot(data=test_df, aes(x=v1,y=v2, colour = as.factor(ID))) + geom_point()+ theme_bw()+ xlab('Variable 1')+ ylab('Variable 2') How to choose a number of samples from the dataset you can use the subset f...

...n J. Kiss test=sample(1:3, 50, replace=TRUE) test=as.factor(test) levels(test)=c("Star", "Globe and Mail", "Post") test2=ISOdatetime(sample(2004:2009, 50, replace=TRUE), sample(1:12, size=50, replace=TRUE), sample(1:30, 50, replace=TRUE), 0,0,0) test2=as.Date(test2) test_df=data.frame(test, test2) ********************************* Simon J. Kiss, PhD SSHRC and DAAD Post-Doctoral Fellow John F. Kennedy Institute of North America Studies Free University of Berlin Lansstra?e 7-9 14195 Berlin, Germany Cell: +49 (0)1525-300-2812, Web: http://www.jfki.fu-berlin.de/index.htm...

Hi R users, I have some sets of variables and put them into one dataframe, like in the following. How to choose a specific set of pareto front, such as 10 from the current datasets (which contains more than 100 sets)? And how to show the 10 points on one figure with different colors? I can put all the points on one figure though, and have the code below. I drew two ggplots to show their

...at 12:37 AM, Ulrik Stervbo <ulrik.stervbo at gmail.com> wrote: > HI lily, > > for the colouring of individual points you can set the colour aesthetic. > The ID is numeric so ggplot applies a colour scale. If we cast ID to a > factor we get the appropriate colouring. > > test_df <- data.frame(ID = 1:20, v1 = rnorm(20), v2 = rnorm(20), v3 = > rnorm(20)) > > ggplot(data=test_df, aes(x=v1,y=v2, colour = as.factor(ID))) + > geom_point()+ theme_bw()+ > xlab('Variable 1')+ ylab('Variable 2') > > How to choose a number of samples from the...

> On Nov 5, 2017, at 9:28 AM, Ahsan Zahir via R-help <r-help at r-project.org> wrote: > > > Hey, > > I am a beginner in R. > > How do I read last 10 values from column- Movie, from a dataset? Some questions are so simple that they strongly suggest no prior effort at self-leanrning. In such cases the usual recommendation given at Rhelp is that you read an

Hey, I am a beginner in R. How do I read last 10 values from column- Movie, from a dataset? Pls help. Sent from my iPhone

Hi, I have a list which looks like this... > str(y) List of 10 $ : chr [1:4] "ABCD" "5" "0" "1" $ : chr [1:4] "DEF" "15" "1" "16" $ : chr [1:4] "AAA" "2" "17" "8" $ : chr [1:4] "SSS" "15" "25" "1" $ : chr [1:4] "III"