sipi降雨指数计算。包含了相关的文档说明还有源码。功能强大。-The SPI program is relatively easy to operate. Prepare an input file with all your data for one station in the following format If the program runs correctly, there should be nothing written to the stderr file (an

这个是降雨标准化指数spi的计算公式，功能强大，能计算多种情况，C++源代码。-The SPI program is relatively easy to operate.If the program runs correctly, there should be nothing written to the stderr file (and it will be zero bytes in size). However, some possible causes of error which

excel宏的SPI计算，降水指数。非常详细的说明-The excel macro SPI precipitation index. Very detailed descr iption of