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

Description Usage Arguments Details Value Author(s) See Also Examples

View source: R/PDFimport.R

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

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Arguments

files

Vector with paths to the PDF files.

...

Arguments sent to statcheck

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.

Value

A data frame containing for each extracted statistic:

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.

Author(s)

Sacha Epskamp <mail@sachaepskamp.com> & Michele B. Nuijten

<m.b.nuijten@uvt.nl>

See Also

statcheck, checkPDFdir

Examples

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


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





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

statcheck documentation built on May 2, 2019, 9:19 a.m.