TIN生成等高线的代码。 我是菜鸟一个，高手们看来可能是小菜一碟，但确实花了我不少时间，希望大家互相学习，共同进步。-i m a small bird .it may seem easy for other strong birds,but truly take me much time .i wish wo good good study ,toghter up.

非常经典的BIRD晴空条件下的太阳直射和散射辐射模型，适用于坡地和平地 - Simple Solar Spectral Model for Direct and Diffuse Irradiance on Horizontal and Tilted Planes at the Earth s Surface for Cloudless Atmospheres , by R. Bird & C. Riordan

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