Sun path chart program

< http://solardat.uoregon.edu/SunChartProgram.html>
以下、University of Oregon, Solar Radiation Monitoring LaboratoryのWebサイトより。
緯度・経度情報から、世界中の各地点での一日ごとの太陽の動きをチャートとして出力できる。
同一地点での夏と冬の太陽の動きを比較することで、高度・角度にどの程度の違いがあるのかが明確にわかる。活用例：　一日の日射量計算、ソーラー発電の設置、地熱発電の適地検討など。
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This program creates sun path charts in Cartesian coordinates for: (1) "typical" dates of each month (i.e.; days receiving about the mean amount of solar radiation for a day in the given month); (2) dates spaced about 30 days apart, from one solstice to the next; or (3) a single date you specify. You can select whether hours are plotted using local standard time or solar time. In addition, there are a number of options available to allow you to alter the chart's appearance. Resulting charts are displayed in your Web browser window, and they are meant to be printed out. Two formats are currently available: PDF (Adobe) and PNG (a standard international graphics format). The create sun path charts in polar coordinates go to the polar sun path charts Web page. For more information, visit our Web page about using sun charts.
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