Transform Tech radar questionnaire input into svg

create-tech-radar.py

#!/usr/bin/python

import sys
from math import sin, cos

prefix = """<svg width="800" height="800" xmlns="http://www.w3.org/2000/svg" >
    <g transform="translate(400,400)">
        <circle r="350" style="fill: rgb(190, 195, 230);"></circle>
    </g>
    <g transform="translate(400,400)">
        <circle r="280" style="fill: rgb(65, 175, 70);"></circle>
    </g>
    <g transform="translate(400,400)">
        <circle r="180" style="fill: rgb(38, 104, 38);"></circle>
    </g>
    <g>
"""

suffix = """    </g>
</svg>
"""

def getRadius(vote):
    if vote < -2:
        return 320 # 0.4
    if vote < -0.8:
        return 280
    elif vote < 0:
        return 240
    elif vote < 0.8: # 0.3
        return 200
    elif vote < 1.5:
        return 170
    elif vote < 3:
        return 140
    elif vote < 8:
        return 90
    elif vote < 15:
        return 40
    else:
        return 0

def radiusToCoordinates(radius, angle):
    x = radius * cos(angle)
    y = radius * sin(angle)
    return (400-x, 400-y)

def createSvg(tech, coordinates):
    line = "<text dx=\"%dpx\" dy=\"%dpx\" text-anhor=\"middle\">%s</text>" % (coordinates[0], coordinates[1], tech)
    return line

techs = sys.stdin.readline().rstrip().split("\t")
votes = map(lambda x: float(x), sys.stdin.readline().rstrip().split("\t"))

data = sorted(zip(techs, votes), key=lambda t: t[1])

print(prefix)
angle = 0
for tech, vote in data:
    radius = getRadius(vote)
    coordinates = radiusToCoordinates(radius, angle)
    angle =  angle + 0.54
    print(createSvg(tech, coordinates))
print(suffix)