checkPDF: Extract statistics and recompute p-values from pdf files.

Description

Extracts statistical values (currently only t and F statistics) from PDF files. To this end the "pdftotext" program is used to convert PDF files to plain text files. This must be installed and PATH variables must be properly set so that this program can be used from command line.

Usage

checkPDF(files, ...)

Arguments

files

Vector with paths to the PDF files.

...

Arguments sent to statcheck

Value

Source: Name of the file of which the statistic is extracted
Statistic: Character indicating the statistic that is extracted
df1: First degree of freedom
df2: Second degree of freedom (if applicable)
Value: Reported value of the statistic
Reported.Comparison: Reported comparison, when importing from pdf this will often not be converted properly
Reported.P.Value: The reported p-value, or NA if the reported value was NS
Computed: The recomputed p-value
Raw: Raw string of the statistical reference that is extracted
InExactError: Error in inexactly reported p values as compared to the recalculated p values
ExactError: Error in exactly reported p values as compared to the recalculated p values
DecisionError: The reported result is significant whereas the recomputed result is not, or vice versa.

Details

See statcheck for more details. Use checkPDFdir to import every PDF file in a given directory. Currently only statistics in the form "(stat (df1, df2) = value, p = value)" are extracted.

Note that this function is still in devellopment. Some statistical values can be missed, especially if the notation is unconvetional. It is recommended to manually check some of the results.

Examples

Run this code



# given that my PDF file is called "article.pdf"


# and I saved it in "C:/mydocuments/articles"





 # checkPDF("C:/mydocuments/articles/article.pdf")