truncate_to_delay

Creates a new reporting_triangle with columns filtered to include only
delays from 0 to the specified maximum delay. This is useful when you want
to limit the delay distribution used for estimation.

Nowcasting right-truncated epidemiological data is critical
for timely public health decision-making, as reporting delays can create
misleading impressions of declining trends in recent data. This package
provides nowcasting methods based on using empirical
delay distributions and uncertainty from past performance. It is also designed
to be used as a baseline method for developers of new nowcasting methods.
For more details on the performance of the method(s) in this package applied
to case studies of COVID-19 and norovirus, see our recent paper at
<https://wellcomeopenresearch.org/articles/10-614>. The package supports
standard data frame inputs with reference date, report date, and
count columns, as well as the direct use of reporting triangles, and is
compatible with 'epinowcast' objects. Alongside
an opinionated default workflow, it has a low-level pipe-friendly modular
interface, allowing context-specific workflows. It can accommodate a wide
spectrum of reporting schedules, including mixed patterns of reference and
reporting (daily-weekly, weekly-daily). It also supports sharing delay
distributions and uncertainty estimates between strata,
as well as custom uncertainty models and delay estimation methods.

Kaitlyn Johnson

baselinenowcast

Baseline Nowcasting for Right-Truncated Epidemiological Data

Emily Tyszka

Johannes Bracher

Sebastian Funk

Sam Abbott

Tim Taylor

truncate_to_delay function

<dl><dt>x</dt>
<dd>A reporting_triangle object.</dd>
<dt>max_delay</dt>
<dd>Integer specifying the maximum delay to retain. Must be
between 0 and the current maximum delay of the triangle.</dd></dl>

Arguments

Truncate reporting triangle to a specific maximum delay — truncate_to_delay

<dl>

<dt>x</dt>
<dd>A reporting_triangle object.</dd>


<dt>max_delay</dt>
<dd>Integer specifying the maximum delay to retain. Must be
between 0 and the current maximum delay of the triangle.</dd>

</dl>

truncate_to_delay: Truncate reporting triangle to a specific maximum delay

Description

Usage

Value

Arguments

See Also

Examples