all_usgs_codes
All valid USGS codes
create_usgs_pattern()
Create an SVG pattern from the USGS library
modify_usgs_pattern()
Change the attributes of a pattern
read_zipped_pattern_by_code()
Read an svg pattern from the zipped file given the USGS code
svgpatternusgs
svgpatternusgs: A package of SVG patterns from the USGS.