Working area of the program NTv2Poly
NTv2 file of Canada without Polygonal Validity Scopes
Polygonal Validity Scopes as an example of Canada
Area Distributionof a shape file and an NTv2 file as an example of Canada
Polygonal Validity Scopes as an example of Germany
Area Distribution of a shape file and an NTv2 file as an example of Germany