问题
Forgive me it's been a while. I'm writing a report and I want to generate sentences from this tree data "fill-in-the-blanks" style.
Here's some data for example:
species <- c("sugar maple","red oak","white ash","eastern hemlock")
size <- c(50,12,33,25)
condition <- c("fair","good","poor","good")
df <- data.frame(species, size, condition)
I'd like to get these sentences from the data:
- The sugar maple is 50 cm and is in fair condition
- The red oak is 12 cm and is in good condition
- The white ash is 33 cm and is in poor condition
- The eastern hemlock is 25 cm and is in good condition
So the data is filling in the blanks in "The ______ is __ cm and is in ____ condition"
I would like to be able to loop through different data sets and have a sentence for each tree (I think I'll be writing my first "for" loop).
If anyone could please direct me to a package or tutorial on how to do this I would be very grateful.
Thank you,
Jay
回答1:
You can use sprintf in base R
with(df, sprintf("The %s is %dcm and is in %s condition", species, size, condition))
#[1] "The sugar maple is 50cm and is in fair condition"
#[2] "The red oak is 12cm and is in good condition"
#[3] "The white ash is 33cm and is in poor condition"
#[4] "The eastern hemlock is 25cm and is in good condition"
There is also glue package which does something similar
with(df, glue::glue("The {species} is {size}cm and is in {condition} condition"))
来源：https://stackoverflow.com/questions/59186300/how-can-i-make-a-sentences-that-report-values-from-each-row-in-r