구글 레이다 차트
http://chart.apis.google.com/chart?cht=r&chs=150x150&chd=t:77,66,88,77|20,36,55,20&chco=0000FF,FF0055&chls=1.0,4.0,0.0|1.0,4.0,0.0&chxt=x&chxl=0:|LC|RC|Ko&chxr=0,0.0,360.0&chm=B,0000FF30,0,1.0,5.0|B,FF002230,1,1.0,5.0 * 차트종류: cht=r (레이다 차트) * 차트크기: chs=150x150 * 데이터값 정의: chd=t:77,66,88,77|20,36,55,20 - 두개의 그래프를 그릴 경우 ..