create_groupVariable

Internal helper function to create a group variable based on the
categorization of either age, period or cohort. To be called from within
<code>plot_densityMatrix</code>.

Age-Period-Cohort (APC) analyses are used to differentiate relevant drivers for long-term developments.
The 'APCtools' package offers visualization techniques and general routines to simplify the workflow of an APC analysis.
Sophisticated functions are available both for descriptive and regression model-based analyses.
For the former, we use density (or ridgeline) matrices and (hexagonally binned) heatmaps as innovative visualization
techniques building on the concept of Lexis diagrams.
Model-based analyses build on the separation of the temporal dimensions based on generalized additive models,
where a tensor product interaction surface (usually between age and period) is utilized
to represent the third dimension (usually cohort) on its diagonal.
Such tensor product surfaces can also be estimated while accounting for
further covariates in the regression model.
See Weigert et al. (2021) <doi:10.1177/1354816620987198> for methodological details.

Alexander Bauer

APCtools

Routines for Descriptive and Model-Based APC Analysis

Maximilian Weigert

Hawre Jalal

create_groupVariable function

<dl><dt>dat</dt>
<dd>Dataset with a column <code>"age"</code>, <code>"period"</code> or
<code>"cohort"</code>, dependent on the specified <code>APC_var</code>.</dd>
<dt>APC_var</dt>
<dd>One of <code>c("age","period","cohort")</code>.</dd>
<dt>groups_list</dt>
<dd>A list with each element specifying the borders of one
row or column in the density matrix. E.g., if the period should be visualized
in decade columns from 1980 to 2009, specify
<code>groups_list = list(c(1980,1989), c(1990,1999), c(2000,2009))</code>.
The list can be named to specify labels for the categories.</dd></dl>

Arguments

Internal helper to create a group variable as base for a density matrix — create_groupVariable

<dl>

<dt>dat</dt>
<dd>Dataset with a column <code>"age"</code>, <code>"period"</code> or
<code>"cohort"</code>, dependent on the specified <code>APC_var</code>.</dd>


<dt>APC_var</dt>
<dd>One of <code>c("age","period","cohort")</code>.</dd>


<dt>groups_list</dt>
<dd>A list with each element specifying the borders of one
row or column in the density matrix. E.g., if the period should be visualized
in decade columns from 1980 to 2009, specify
<code>groups_list = list(c(1980,1989), c(1990,1999), c(2000,2009))</code>.
The list can be named to specify labels for the categories.</dd>

</dl>

create_groupVariable: Internal helper to create a group variable as base for a density matrix

Description

Usage

Value

Arguments