x,y如图片上显示,用e指数拟合,求y随x的变化关系,画出原数据散点图和拟合曲线图.matlab程序是什么

x,y如图片上显示,用e指数拟合,求y随x的变化关系,画出原数据散点图和拟合曲线图.matlab程序是什么
x=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112];
y=[82,6082,5966,1005,879,397,446,282,496,211,103,145,226,339,648,62,49,77,10,133,2279,7105,24416,40868,27120,37130,108961,161235,213826,293258,237517,247004,207884,232531,145405,106058,78244,27551,104,261,5150,18954,14314,8978,5831,2973,2523,1071,619,495,6,0,0,85,444,181,25,46,322,155,363,98,43,102,58,29,6,0,0,0,0,0,0,0,81,69,12,33,62,78,34,167,230,283,394,735,837,1552,2332,1820,13,0,1397,31376,58926,55349,45309,29259,41348,37837,48518,43995,7148,37,59,4257,14339,11994,1139,739,2655,1722];

General model Gauss4:
     f(x) =
              a1*exp(-((x-b1)/c1)^2) + a2*exp(-((x-b2)/c2)^2) +
              a3*exp(-((x-b3)/c3)^2) + a4*exp(-((x-b4)/c4)^2)
       where x is normalized by mean 56.5 and std 32.48
Coefficients (with 95% confidence bounds):
       a1 =  1.782e+005  (1.017e+005, 2.547e+005)
       b1 =     -0.8246  (-0.8422, -0.8071)
       c1 =     0.06889  (0.04866, 0.08913)
       a2 =  1.578e+005  (1.004e+005, 2.153e+005)
       b2 =     -0.7026  (-0.7283, -0.6768)
       c2 =     0.08578  (0.05463, 0.1169)
       a3 =  6.616e+004  (-5194, 1.375e+005)
       b3 =     -0.8067  (-0.8735, -0.7399)
       c3 =       0.196  (0.1253, 0.2668)
       a4 =  5.019e+004  (4.148e+004, 5.889e+004)
       b4 =       1.275  (1.254, 1.297)
       c4 =      0.1508  (0.1206, 0.181)Goodness of fit:
  SSE: 7.878e+009
  R-square: 0.9793
  Adjusted R-square: 0.977
  RMSE: 8876
再问： 请问是用cftool做的吗？能不能具体说说步骤？type of fit怎么确定用高斯逼近的？为什么我自己做出来拟合曲线没那么平滑，是这样的呢？
再答： 是的。在命令窗口中，输入下列命令 x=[1,2,3,4,5,6,7,8,9,10,。。。。。。] y=[82,6082,5966,1005,879,397,446,282,496,211,。。。。。。] cftool 点击，Data。选择x，y；选择Create data set；close 点击，Fitting...。选择x，y；New fit；选择Type of fit，Gaussian，第4种；选择Center and scale X data；选择Immediate apply 得到如上结果
再问： 我就是按照您说的这个步骤做的，为什么拟合出来之后在第24个点的那个部分，拟合曲线和您做的不太一样呢？是事先对数据进行了预处理之类的了吗？而且我的不能选“center and scale X date”，选了这个之后拟合曲线就变成了一条直线，大概像图里这样，请问这是为什么呢？头一次用cftool实在搞不太明白。
再答： 我用的是Matlab2010a。你用的版本是多少？