[Issue93] Some fixes. Details below: 1. Only saves image in drawPieCharts(), drawPrecipChart() and drawRadarChart() 2. The Precip image ( or canvas ) was too big. Fix it as suitable size.
[Issue93] Some fixes. Details below:
1. Only saves image in drawPieCharts(), drawPrecipChart() and
drawRadarChart()
2. The Precip image ( or canvas ) was too big. Fix it as suitable size.

elizabethli1998/pewi3.0,tomtinkerer/pewi3.0,tomtinkerer/pewi3.0,qaws01395/pewi3.0,elizabethli1998/pewi3.0,LESEM-PEWI/pewi3.0,LESEM-PEWI/pewi3.0,qaws01395/pewi3.0