I have created a tutorial in learnr and I have noticed that for each code chunk that I create, I need to rerun the code from previous chunks if I wish to use the same data.
For instance, if I have something like this :
oneway <- aov(data=iris, Petal.Length~Species)
which I make in one exercise chunk, and I run:
summary(oneway)
in the next chunk, it will not recognize "oneway" anymore.
This is a "feature" of learnr such that any exercise can be done at any time without relying on previous steps.
The way around this is by setting up shared prepare blocks:
```{r prepare-a}
oneway <- aov(data=iris, Petal.Length~Species)
```
```{r a, exercise=TRUE}
oneway
```
```{r b, exercise=TRUE, exercise.setup = "prepare-a"}
summary(oneway)
```
See Exercise Setup for more info.