无法将数据从CSV文件读取到R Markdown闪亮文档

Question

I am experimenting with the R Markdown Shiny documents for interactive reporting. First trouble got is to read data from local csv file.

{r, cache=TRUE} raw1<-read.csv("data/set1.csv") splits <- unique(raw1$split) The error message I have is " Error in file(file, "rt") : cannot open the connection".

There is no issue to use the above code to read data in regular R Markdown documents. Can anyone help the best practice to create interactive reporting using Shiny Document?

Answer 1

Try changing cache to FALSE. I haven't been able to successfully use caching when hosting on a Shiny server.

Answer 2

```{r, echo = FALSE, message=FALSE}
library(data.table)
dataset <- fread("yourfile.csv",header=T)
```

Try fread from data.table. It should help. Worked well for me. It's also way faster than read.csv.