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jennybc merged 1 commit into from
May 6, 2026
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Use better comparisons for equality checks #789

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36 changes: 22 additions & 14 deletions vignettes/articles/readxl-workflows.Rmd
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Original file line number Diff line number Diff line change
Expand Up @@ -69,10 +69,9 @@ Yes! Is the data written to CSV an exact copy of what we imported from Excel?

```{r}
mtcars_alt <- read_csv("mtcars-raw.csv")
## readr leaves a note-to-self in `spec` that records its column guessing,
## so we remove that attribute before the check
attr(mtcars_alt, "spec") <- NULL
identical(mtcars_xl, mtcars_alt)
## readr leaves some special attributes behind to record its
## column guessing, so we remove those with `[]`
identical(mtcars_xl, mtcars_alt[])
```

Yes! If we needed to restart or troubleshoot this fictional analysis, `mtcars-raw.csv` is available as a second, highly accessible alternative to `datasets.xlsx`.
Expand Down Expand Up @@ -144,7 +143,7 @@ path <- readxl_example("deaths.xlsx")
deaths <- path |>
excel_sheets() |>
set_names() |>
map(~ read_excel(path = path, sheet = .x, range = "A5:F15")) |>
map(\(x) read_excel(path = path, sheet = x, range = "A5:F15")) |>
list_rbind(names_to = "sheet")
print(deaths, n = Inf)
```
Expand Down Expand Up @@ -175,7 +174,7 @@ ranges <- list("A5:F15", cell_rows(5:15))
deaths <- map2(
sheets,
ranges,
~ read_excel(path, sheet = .x, range = .y)
\(x, y) read_excel(path, sheet = x, range = y)
) |>
list_rbind(names_to = "sheet") |>
write_csv("deaths.csv")
Expand All @@ -195,9 +194,9 @@ Rework examples from above but using base R only, other than readxl.
```{r eval = FALSE}
mtcars_xl <- read_excel(readxl_example("datasets.xlsx"), sheet = "mtcars")
write.csv(mtcars_xl, "mtcars-raw.csv", row.names = FALSE, quote = FALSE)
mtcars_alt <- read.csv("mtcars-raw.csv", stringsAsFactors = FALSE)
## coerce mtcars_xl back to a data.frame
identical(as.data.frame(mtcars_xl), mtcars_alt)
mtcars_alt <- read.csv("mtcars-raw.csv")
## coerce mtcars_xl to a data.frame, instead of a tibble
all.equal(as.data.frame(mtcars_xl), mtcars_alt)
```

### Iterate over multiple worksheets in a workbook
Expand All @@ -215,8 +214,12 @@ names(xl_list) <- sheets
read_then_csv <- function(sheet, path) {
pathbase <- tools::file_path_sans_ext(basename(path))
df <- read_excel(path = path, sheet = sheet)
write.csv(df, paste0(pathbase, "-", sheet, ".csv"),
quote = FALSE, row.names = FALSE)
write.csv(
df,
paste0(pathbase, "-", sheet, ".csv"),
quote = FALSE,
row.names = FALSE
)
df
}
path <- readxl_example("datasets.xlsx")
Expand Down Expand Up @@ -244,9 +247,14 @@ xl_list <- do.call(rbind, xl_list)
path <- readxl_example("deaths.xlsx")
sheets <- excel_sheets(path)
ranges <- list("A5:F15", cell_rows(5:15))
xl_list <- mapply(function(x, y) {
read_excel(path = path, sheet = x, range = y)
}, sheets, ranges, SIMPLIFY = FALSE)
xl_list <- mapply(
function(x, y) {
read_excel(path = path, sheet = x, range = y)
},
sheets,
ranges,
SIMPLIFY = FALSE
)
xl_list <- lapply(seq_along(sheets), function(i) {
data.frame(sheet = I(sheets[i]), xl_list[[i]])
})
Expand Down
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