Coverage for pyrdnap/v1grid/__init__.py: 100%

1 

2# -*- coding: utf-8 -*- 

3 

4u'''Variant 1 grid files, but B{only} columns C{NAP_h_...}, C{lat_corr_} and 

5C{lon_corr_} of the original C{RDNAPTRANS2018_v220627/...1/nlgeo2018.txt} and 

6C{...1/rdcorr2018.txt} grid files and encoded into Python as 3 row-order 

7matrices, each a 481-tuple of 301-arrays of floats. 

8 

9Of the 144,781 floats (481 x 301) in each of the C{lat_corr_} and C{lon_corr_} 

10columns of the original grid file C{...1/rdcorr2018.txt} only 55,139 respectively 

1155,348 are non-zero between indices [8598:93827] respectively [8598:93830]. 

12 

13As a result, the first 28 and the last 169 rows (in total 197 rows or 41% of 

14481) can all be represented by the same 301-array of single-precision zeros. 

15There are other stretches of zeros, but none amount to 301 or more. 

16 

17The non-zeros in C{lat_corr_} and C{lon_corr_} colums are initially stored as 

18a 349- respectively 317-tuple of runs of non-zeros plus a start and end index. 

19Upon import, the runs are re-formatted into a row-order matrix, a 481-tuple of 

20301-arrays of floats. 

21 

22The combined size of these 3 grid files is 2 MB vs 9.7 MB for the original 2. 

23''' 

24from pyrdnap.v1grid.nlgeo2018_txt_NAP_h import _NAP_h # noqa: F401 

25from pyrdnap.v1grid.rdcorr2018_txt_lat_corr import _lat_corr # noqa: F401 

26from pyrdnap.v1grid.rdcorr2018_txt_lon_corr import _lon_corr # noqa: F401 

27 

28__all__ = () 

29__version__ = '26.05.08'