katrina376/formosa

Generating SVG Taiwan maps and coloring them using Python 3.

Formosa

Generating SVG Taiwan maps and coloring them using Python 3.

Features

1. generate an SVG template map using the district boundary datasets (GML or SHP files) provided by NLSC
2. render the template by specifying the district identification code and the color

Requirements

• Python >= 3.6
• svgwrite
• pyshp

Data

1. download the ZIP files and unzip:

• 鄉鎮市區界線(TWD97經緯度)
• 直轄市、縣市界線(TWD97經緯度)

2. specify the paths to the unzipped *.gml files or *.shp files

Examples

Generate a map with default settings

from formosa.template import create

output = 'template.svg'
boundary_fp = '/PATH/TO/FILE.shp'
template.create(output, boundary_fp)

Generate a map with Penghu, Kinmen, and Matsu in floating boxes

from formosa.template import create_from_obj

class Config:
    AREA_FILE_PATH = '/PATH/TO/AREA/FILE'
    BORDER_FILE_PATH = '/PATH/TO/BORDER/FILE'
    
    SIZE = (1040, 1040)
    
    ASSIGN_RULES = [
        (lambda name: '金門縣' in name, 'Kinmen'),
        (lambda name: '連江縣' in name, 'Matsu'),
        (lambda name: '澎湖縣' in name, 'Penghu'),
    ]

    GROUPS = {
        'main': {
            'display_name': '',
            'position': (0, 0),
            'size': (1, 1),
            'border': (118.6, 120.6, 21.7, 25.5),
            'skip': 16,
        },
        'Penghu': {
            'display_name': '澎湖',
            'position': (0.02, 0.5),
            'size': (0.32, 0.48),
            'border': (119.3, 119.35, 23.14, 23.82),
            'skip': 4,
        },
        'Kinmen': {
            'display_name': '金門',
            'position': (0.02, 0.26),
            'size': (0.32, 0.2),
            'border': (118.1, 118.6, 24.28, 24.42),
            'skip': 4,
        },
        'Matsu': {
            'display_name': '連江',
            'position': (0.02, 0.02),
            'size': (0.32, 0.2),
            'border': (119.81, 120.01, 26.1, 26.3),
            'skip': 4,
        },
    }


output = 'template.svg'
create_from_obj(output, Config)

Render a template

from formosa.color import color

template = 'template.svg'

by_name = [{'code': '64000120', 'color': 'red'}]
by_hex = [{'code': '64000120', 'color': 'F00'}]
by_rgb = [{'code': '64000120', 'color': '255,0,0'}]

color(by_name, template, 'color_by_name.svg') # CSS color name
color(by_hex, template, 'color_by_hex.svg', 'hex')
color(by_rgb, template, 'color_by_rgb.svg', 'rgb')

Render a template using Taiwan town codes ver.103

from formosa.color import color
from formosa.utils.code import convert_TW103_to_MOI

template = 'template.svg'

data = [{'code': '6401200', 'color': 'red'}] # ver.103
for d in data:
    d.update({'code': convert_TW103_to_MOI(d.pop('code'))})

color(data, template, 'color_ver103_by_name.svg')