Converts NASTRAN PCH file (SORT2) to a data structure and frequency vector. A filename as a string is the only needed input.
The output is in the form of struct containing a freq vector n x 1 called data.f, and the remaining data are in the form of subcases, point ids and directions respectively. E.g. data.S1.p254686.x and they are n x 2.
Package: io