Run R-code

The code feature allows you to run R-code with access to all functions and data in Radiant. By clicking the Run code button, the code will be evaluated and the output will be shown on the right of the R > Code page. To evaluate only a part of the code use the cursor to select a section and press CTRL-return (CMD-return on mac).

You can load an R-code file into Radiant by clicking the Choose File button and selecting an .r or .R file. If you started Radiant from Rstudio you can save a report in HTML, Word, or PDF format by selecting the desired format from the drop-down manu and clicking Save. To save just the code choose R-code from the dropdown and press the Save button.

As an example you can copy-and-paste the code below into the editor and press Run code to generate results.

```r## get the active dataset and show the first few observations .getdata() %>% head

access a specific dataset by name

r_data[[‘diamonds’]] %>% select(price, clarity) %>% head

add a variable to the diamonds data

dat <- r_data[[‘diamonds’]] dat\(log_price <- log(dat\)price)

show the first observations

dat %>% select(price, log_price) %>% head

create a histogram of prices

dat %>% ggplot(aes(x = price)) + geom_histogram()

and a histogram of log-prices

dat %>% ggplot(aes(x = log_price)) + geom_histogram()

open help in the R-studio viewer from Radiant

help(package = ‘radiant’)

if you are familiar with Shiny you can call reactives here

for example, if you just transformed some variables in Data > Transform

you can call the transform_main reacive to see the latest result

this can very useful for debugging

transform_main() %>% head


© Vincent Nijs (2016) Creative Commons License