d_left_join

This function joins two tables based on a distance metric of one or more columns. It gives the same results that the <code>distance_left_join</code> function of the <code>fuzzyjoin</code> R package, but its execution time is faster. It is used to match mass spectra to short-listed mass-to-charge values in <code>PredictLogReg</code> and <code>PredictFastClass</code> functions.

Functions to classify mass spectra in known categories, and to determine discriminant mass-to-charge values. It includes easy-to-use functions for preprocessing mass spectra, functions to determine discriminant mass-to-charge values (m/z) from a library of mass spectra corresponding to different categories, and functions to predict the category (species, phenotypes, etc.) associated to a mass spectrum from a list of selected mass-to-charge values. If you use this package in your research, please cite the associated publication (<doi:10.1016/j.eswa.2025.128796>). For a comprehensive guide, additional applications, and detailed examples of using this package, please visit our GitHub repository (<https://github.com/agodmer/MSclassifR_examples>).

Alexandre Godmer

MSclassifR

Automated Classification of Mass Spectra

Quentin Giai Gianetto

Karen Druart

d_left_join function

<dl> <dt>x</dt>
<dd>A <code>data.frame</code> object.</dd>
 <dt>y</dt>
<dd>A <code>data.frame</code> object.</dd>
 <dt>by</dt>
<dd>Columns by which to join the two tables. <code>NULL</code> by default (tables are joined by matching the common column names that appear in both datasets x and y).</dd>
 <dt>method</dt>
<dd>Method to use for computing distance, either "euclidean" (default) or "manhattan".</dd>
 <dt>max_dist</dt>
<dd>A <code>numeric</code> value indicating the maximum distance to use for joining. 1 by default.</dd>
 <dt>distance_col</dt>
<dd>A <code>character</code> that specifies the name of a new column to be added to the output, which will contain the calculated distances between both tables. If NULL, no column is added (default).</dd></dl>

Arguments

Function joining two tables based not on exact matches — d_left_join

<dl>

 <dt>x</dt>
<dd>A <code>data.frame</code> object.</dd>


 <dt>y</dt>
<dd>A <code>data.frame</code> object.</dd>


 <dt>by</dt>
<dd>Columns by which to join the two tables. <code>NULL</code> by default (tables are joined by matching the common column names that appear in both datasets x and y).</dd>


 <dt>method</dt>
<dd>Method to use for computing distance, either "euclidean" (default) or "manhattan".</dd>


 <dt>max_dist</dt>
<dd>A <code>numeric</code> value indicating the maximum distance to use for joining. 1 by default.</dd>


 <dt>distance_col</dt>
<dd>A <code>character</code> that specifies the name of a new column to be added to the output, which will contain the calculated distances between both tables. If NULL, no column is added (default).</dd>

</dl>

d_left_join: Function joining two tables based not on exact matches

Description

Usage

Value

Arguments