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How can the issue of R markdown not identifying the dataframe from the previous chunk with the error "object not found" be resolved?

asked 2022-06-16 11:00:00 +0000

scrum gravatar image

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answered 2021-12-25 20:00:00 +0000

david gravatar image

There are several ways to resolve the "object not found" error in R markdown when a dataframe is not recognized from the previous chunk:

  1. Check if the dataframe name is spelled correctly.
  2. Ensure that the previous chunk has been executed successfully before running the current chunk.
  3. Write the code to load the dataframe explicitly in the current chunk using read.csv() or data.frame() functions.
  4. Use the source() function to load the R script in which the dataframe was created before running the current chunk.
  5. Use the knitr::knit_child() function to execute a chunk in a child R markdown file that contains the code to create the dataframe. The output of the child file is then included in the parent document.

Example:

In the parent R markdown file, include the following code in the chunk where the dataframe is to be used:

```{r child_chunk, child='child.Rmd'}

In the child R markdown file `child.Rmd`, include the code to create the dataframe:

```{r}

Code to create dataframe

data <- read.csv("data.csv")

 

This way, the child chunk is executed and the dataframe is created before the parent chunk is executed.

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Asked: 2022-06-16 11:00:00 +0000

Seen: 11 times

Last updated: Dec 25 '21