DSF is not compatible with PGA.

there are no coefficients for PGA so the data tries to calculate with null values. create a imt check to make sure its only applied to valid imts.

changed milestone to %GMM Sprint

added To Do label

Not sure the description is correct. PGA coefficients exist (copy of 0.01 s coeffs). In working on IMT (#235 (closed)) found where if imt== PGAinUsgsDampingScalingan error would be thrown on call toImt.period()`. Now PGA routes to the short period damping calculation.

mentioned in merge request !400 (merged)

mentioned in commit a91a7297

closed with merge request !400 (merged)

removed To Do label