[Appinventor2] Google API 圖表 (Google Chart Api)

Example1:

https://chart.googleapis.com/chart?chs=400x200&chd=t:50,30,20&cht=p3&chco=FF0000|00FF00|0000FF&chl=etf|bond|cd

參數說明：

chs 輸出解析度大小

chd=t:x,y,z  xyz為百分比數值

cht=p3  3D PieChart

chco=a|b|c abc為顏色

chl= 標題

Google Chart URL Example

ref:

https://developers.google.com/chart/image/docs/making_charts

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