Defining an imperfection directly （直接定义缺陷）

You can specify the imperfection directly as a table of node numbers and coordinate perturbations in the global coordinate system or, optionally, in a cylindrical or spherical coordinate system. Alternatively, you can read the imperfection data from a separate input file.

Data lines to define the imperfection if the FILE and INPUT parameters are omitted: 

First line:

1. Node number.
2. Component of imperfection in the first coordinate direction.
3. Component of imperfection in the second coordinate direction.
4. Component of imperfection in the third coordinate direction.