fn_1: Helper function fn_1
| fn_1 | R Documentation |
Helper function fn_1
Description
Helper function to calculate the standard errors of standard deviations and
correlations from a MIXL model. Together, all the helper functions and the
four functions fn_se_var, fn_se_cov,
fn_se_corr and fn_se_std, is an application
of the Delta method. The helper functions are for internal use only and are
not exported.
Usage
fn_1(a, L)
Arguments
a |
An integer indicating the row position of the random parameter in the asymptotic variance-covariance matrix |
L |
The lower cholesky matrix |
References
http://www.stephanehess.me.uk/software.html Daly, A. J., Hess, S., & de Jong, G., 2012, Calculating errors for measures derived from choice modelling estimates, Transportation Research Part B, 46(2):333-341
