remove_unknown_columns

This function removes columns that exclusively contain the value defined in 'search_term' (such as " unknown" (default)).

remove

that

Missing

columns

values.

contain

exclusively

Provides tools for assigning molecular formulas from exact masses
obtained by ultrahigh-resolution mass spectrometry. The methodology follows
the workflow described in Leefmann et al. (2019) <doi:10.1002/rcm.8315>.
The package supports the inspection, filtering and visualization of
molecular formula data and includes utilities for calculating common
molecular parameters (e.g., double bond equivalents, DBE). A graphical
user interface is available via the 'shiny'-based 'ume' application.

Boris Koch

Ultrahigh-Resolution Mass Spectrometry Data Evaluation for
Complex Organic Matter

remove_unknown_columns function

<dl><dt>df</dt>
<dd>data.table that contains empty columns</dd>
<dt>excl_cols</dt>
<dd>List of column names that should not be removed, even if all values contain search_term</dd>
<dt>search_term</dt>
<dd>String that uniquely occurs in one column</dd>
<dt>...</dt>
<dd>Additional arguments passed to methods.</dd></dl>

Arguments

Remove columns that only have one specific value — remove_unknown_columns

<dl>

<dt>df</dt>
<dd>data.table that contains empty columns</dd>


<dt>excl_cols</dt>
<dd>List of column names that should not be removed, even if all values contain search_term</dd>


<dt>search_term</dt>
<dd>String that uniquely occurs in one column</dd>


<dt>...</dt>
<dd>Additional arguments passed to methods.</dd>

</dl>

remove_unknown_columns: Remove columns that only have one specific value

Description

Usage

Arguments

See Also