predict.vectorfield

Calculate the vector value at a given position

A toolbox for estimating vector fields from intensive
longitudinal data, and construct potential landscapes thereafter. The
vector fields can be estimated with two nonparametric methods: the
Multivariate Vector Field Kernel Estimator (MVKE) by Bandi & Moloche
(2018) <doi:10.1017/S0266466617000305> and the Sparse Vector Field
Consensus (SparseVFC) algorithm by Ma et al. (2013)
<doi:10.1016/j.patcog.2013.05.017>. The potential landscapes can be
constructed with a simulation-based approach with the 'simlandr'
package (Cui et al., 2021) <doi:10.31234/osf.io/pzva3>, or the
Bhattacharya et al. (2011) method for path integration
<doi:10.1186/1752-0509-5-85>.

Jingmeng Cui

fitlandr

Fit Vector Fields and Potential Landscapes from Intensive
Longitudinal Data

predict.vectorfield function

<dl><dt>object</dt>
<dd>A <code>vectorfield</code> project generated by <code>fit_2d_vf()</code>.</dd>
<dt>pos</dt>
<dd>A vector, the position of the vector.</dd>
<dt>linear_interp</dt>
<dd>Use linear interpolation method to estimate the drift vector (and the diffusion matrix). This can speed up the calculation. If <code>TRUE</code>, be sure that a linear grid was calculated for the vector field using <code>&lt;vf&gt; &lt;- add_interp_grid(&lt;vf&gt;)</code>.</dd>
<dt>calculate_a</dt>
<dd>Effective when <code>linear_interp == TRUE</code>. Do you want to calculate the diffusion matrix? Use <code>FALSE</code> can save some time.</dd>
<dt>...</dt>
<dd>Not in use.</dd></dl>

Arguments

Calculate the vector value at a given position — predict.vectorfield

<dl>

<dt>object</dt>
<dd>A <code>vectorfield</code> project generated by <code>fit_2d_vf()</code>.</dd>


<dt>pos</dt>
<dd>A vector, the position of the vector.</dd>


<dt>linear_interp</dt>
<dd>Use linear interpolation method to estimate the drift vector (and the diffusion matrix). This can speed up the calculation. If <code>TRUE</code>, be sure that a linear grid was calculated for the vector field using <code>&lt;vf&gt; &lt;- add_interp_grid(&lt;vf&gt;)</code>.</dd>


<dt>calculate_a</dt>
<dd>Effective when <code>linear_interp == TRUE</code>. Do you want to calculate the diffusion matrix? Use <code>FALSE</code> can save some time.</dd>


<dt>...</dt>
<dd>Not in use.</dd>

</dl>

predict.vectorfield: Calculate the vector value at a given position

Description

Usage

Value

Arguments

See Also