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通过误差来控制数据精度

//话不多说,直接上代码----------看注释就明白        public static void getSmallFramPoint()        {            string framString ="Row,"+"Colum,"+ "framX," + "framY\r\n";            float i = 15f;            float j =70f ;            float a=0;            float b=0;            int row = 0;            int colum = 0;            int lan = 0;            int lon = 0;            for ( i = 15f; i <= 55f; i++)            {                lan =Convert.ToInt32(i);                for (j =70f; j <= 137f; j++)                {                    lon = Convert.ToInt32(j) ;                    for (a = i; a <= i + 1.005f; a += 0.01f)         //0.005用来控制浮点型的误差                    {                        row++;                        for(b=j;b<=j+1.005;b+=0.01f)                        {                            colum++;                            framString += row.ToString() + "," + colum.ToString() + "," + b.ToString("0.00") + "," + a.ToString("0.00") + "\r\n";                        }                        colum = 0;                    }                    row = 0;                    //输出                    System.IO.File.WriteAllText(@"G:\RZPU\20141118fishnet\test\" + lan.ToString() + "-" + lon.ToString() + ".csv", framString);                    framString = "Row," + "Colum," + "framX," + "framY\r\n";                                    }            }        }

通过误差来控制数据精度