text2num {JATSdecoder}

text2num

Description

Converts special annotated number and written numbers in a text string to a fully digit representation. Can handle numbers with exponent, fraction, percent, e+num, products and written representation (e.g. 'fourtys-one') of all absolut numbers up to 99,999 (Note: gives wrong output for higher spelled numbers). Process is performed in the same order as its arguments.

Usage

text2num(
  x,
  exponent = TRUE,
  percentage = TRUE,
  fraction = TRUE,
  e = TRUE,
  product = TRUE,
  words = TRUE
)

Arguments

x

text string to process.

exponent

Logical. If TRUE values with exponent are converted to a digit representation.

percentage

Logical. If TRUE percentages are converted to a digit representation.

fraction

Logical. If TRUE fractions are converted to a digit representation.

e

Logical. If TRUE values denoted with 'number e+number' (e.g. '2e+2') or number*10^number are converted to a digit representation.

product

Logical. If TRUE values products are converted to a digit representation.

words

Logical. If TRUE written numbers are converted to a digit representation.

Value

Character. Text with unified digital representation of numbers.

Examples

x<-c("numbers with exponent: 2^2, -2.5^2, (-3)^2, 6.25^.5, .2^-2 text.",
     "numbers with percentage: 2%, 15 %, 25 percent.",
     "numbers with fractions: 1/100, -2/5, -7/.1",
     "numbers with e: 10e+2, -20e3, .2E-2, 2e4",
     "numbers as products: 100*2, -20*.1, 2*10^3",
     "written numbers: twenty-two, one hundred fourty five, fifteen percent",
     "mix: one hundred ten is not 1/10 is not 10^2 nor 10%/5")
text2num(x)