observed

observed.data.frame

The observed function is the first function in the vpc piping chain and is used for specifying observed data and variables for VPC. Note: Observed
data must not contain missing DV and may require filtering <code>MDV == 0</code> before generating VPC.

Perform a Visual Predictive Check (VPC), while accounting for
stratification, censoring, and prediction correction. Using piping from
'magrittr', the intuitive syntax gives users a flexible and powerful method
to generate VPCs using both traditional binning and a new binless approach
Jamsen et al. (2018) <doi:10.1002/psp4.12319> with Additive Quantile
Regression (AQR) and Locally Estimated Scatterplot Smoothing (LOESS)
prediction correction.

James Craig

tidyvpc

VPC Percentiles and Prediction Intervals

Olivier Barriere

Benjamin Rich

Samer Mouksassi

Bill Denney

Kris Jamsen

Certara USA, Inc. 

observed function

<dl><dt>o</dt>
<dd>A <code>data.frame</code> of observation data.</dd>
<dt>...</dt>
<dd>Other arguments.</dd>
<dt>x</dt>
<dd>Numeric x-variable, typically named TIME.</dd>
<dt>yobs</dt>
<dd>Numeric y-variable, typically named DV.</dd>
<dt>pred</dt>
<dd>Population prediction variable, typically named PRED.</dd>
<dt>blq</dt>
<dd>Logical variable indicating below limit of quantification.</dd>
<dt>lloq</dt>
<dd>Number or numeric variable in data indicating the lower limit of quantification.</dd>
<dt>alq</dt>
<dd>Logical variable indicating above limit of quantification .</dd>
<dt>uloq</dt>
<dd>Number or numeric variable in data indicating the upper limit of quantification.</dd></dl>

Arguments

Specify observed dataset and variables for VPC — observed

<dl>

<dt>o</dt>
<dd>A <code>data.frame</code> of observation data.</dd>


<dt>...</dt>
<dd>Other arguments.</dd>


<dt>x</dt>
<dd>Numeric x-variable, typically named TIME.</dd>


<dt>yobs</dt>
<dd>Numeric y-variable, typically named DV.</dd>


<dt>pred</dt>
<dd>Population prediction variable, typically named PRED.</dd>


<dt>blq</dt>
<dd>Logical variable indicating below limit of quantification.</dd>


<dt>lloq</dt>
<dd>Number or numeric variable in data indicating the lower limit of quantification.</dd>


<dt>alq</dt>
<dd>Logical variable indicating above limit of quantification .</dd>


<dt>uloq</dt>
<dd>Number or numeric variable in data indicating the upper limit of quantification.</dd>

</dl>

observed: Specify observed dataset and variables for VPC

Description

Usage

Value

Arguments

See Also

Examples