test_null_weights: Test outer weights convergence within specified maxiter
Description
Test outer weights convergence within specified maxiter
Usage
test_null_weights(wgs, specs)
Arguments
wgs
output from 'get_weights()'
Value
gives an error when wgs is NULL (i.e. non-convergence)
Details
Internal function. test_weights_output
is called by plspm
.
Basically checks that weights are not NULL.