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extract the frequency of nodes in a text

Usage

freq_nodes(vert, text, lower = TRUE)

Arguments

vert

a vector of nodes/terms

text

an input text

lower

Convert words to lowercase.

Value

a dataframe of nodes and its frequency

Examples

vert <- c(letters[1:7], letters[1:3])
vert
#>  [1] "a" "b" "c" "d" "e" "f" "g" "a" "b" "c"
text <- paste(vert, collapse = " ")
freq_nodes(vert, text)
#> 
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#> # A tibble: 7 × 2
#>   x      freq
#>   <chr> <int>
#> 1 a         4
#> 2 b         4
#> 3 c         4
#> 4 d         1
#> 5 e         1
#> 6 f         1
#> 7 g         1