It's not clear what you (the OP) means by "higher degree of order". The order parameter, from field theory, has a clear meaning- it is zero in a symmetric phase and non-zero otherwise. There's ways to assess the regularity of "sort of" periodic functions by looking at the Fourier transform- arrays of lines can be represented fairly simply, and given the same line-line spacing, 100 lines require a larger envelope than 10; in Fourier space, the first function will cover a smaller spectral range, with an interpretation that it more closely approximates a truly periodic function.
Another way to think of the situation is for a diffraction grating- a grating with 100 rulings will diffract more efficiently than a grating of 10 rulings; this can be a measure of order as well, I suppose.
Can you be a little more specific by what you mean?