在R中生成qplot时出错

Question

I am still learning R. Tried looking up the reason for this error but not quite sure.

I am getting this error:

This is the .RMD code:

All I did was try to plot a simple graph, where sp is the dataset.

The dataset lookis like this:

xAxis|count|yAxis  

18   |2    |0.1  
20   |2    |0.1  
22   |4    |0.3  
25   |2    |0.2  
30   |1    |0.1  
39   |2    |0.1 

UPDATE
I tried saving the data like this:

SaveRDS(sp,file="C:\\Desktop\\sp1.RData")

I then wrote this code in R-Markdown:

library(datasets)  
load(file="C:\\Desktop\\sp1.RData")  
plot(sp$xAxis,sp$yAxis)  

And got this Error:

Any help would be appreciated. Thanks

Answer 1

This is how I got it. Thanks to all of you for guiding me in the right direction.
I first saved the file like this:

save(sp,file="C:\\Desktop\\sp.RData")  

Then in R-Markdown, wrote something like this:

```{r load sp}
load("C:\\Desktop\\sp.RData")
plot(sp$xAxis,sp$yAxis)
```  

Then pressed Knit to see the chart in the html popup window.