Even after computing the model-implied indicator correlation matrix, IGSCA (and GSCA-type) models seem to use a different formula for GFI and SRMR than what is currently implemented in calculateSRMR() andcalculateGFI()
See Equations A-12 and A-13 of https://link.springer.com/article/10.1007/s11575-022-00479-w.
EDIT: The SRMR is the same, but the presentation was just different from what I'm used to.
Even after computing the model-implied indicator correlation matrix, IGSCA (and GSCA-type) models seem to use a different formula for GFI
and SRMRthan what is currently implemented incalculateSRMR()andcalculateGFI()See Equations A-12
and A-13of https://link.springer.com/article/10.1007/s11575-022-00479-w.EDIT: The SRMR is the same, but the presentation was just different from what I'm used to.