dianci.m

电磁场实验中

%z=[14.1,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.3,15.3,15.4,15.4,15.5,16.6];
%z=[16.2,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.3,17.3,17.3,17.3,17.4,17.4,17.4,17.5,17.6,17.7,17.7,17.7,17.7,17.7,17.8,17.8,17.8,17.9,17.9,18.0,18.0,18.0,18.0];
%z=[14.7,14.7,14.8,14.9,14.9,14.9,14.9,15.0,15.0,15.1,15.1,15.1,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.4,15.4,15.4,15.4,15.4,15.4,15.4,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.6,15.6,15.6,15.7,15.7,15.7,15.7,15.7,15.7,15.7,15.7,15.8,15.8,15.8,15.9,15.9,15.9,15.9,15.9,15.9,15.9,16.0,16.0,16.0,16.0,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.3,16.3,16.5,16.7];
%z=[17.0,17.0,17.1, 17.1,17.1,17.1, 17.1, 17.1, 17.1,17.1, 17.1, 17.1, 17.1,17.2, 17.2, 17.2, 17.2,17.2, 17.2, 17.2, 17.2, 17.2,17.2, 17.2,17.3, 17.3,17.3, 17.3, 17.3,17.3, 17.3, 17.3, 17.3,17.3,17.3, 17.3, 17.3,17.4, 17.4,17.4,17.5, 17.5, 17.5, 17.5, 17.5, 17.5,17.5, 17.6, 17.6, 17.6, 17.6, 17.6, 17.6,17.6, 17.6,17.7, 17.7 17.7, 17.7, 17.7, 17.7, 17.7,17.8, 17.8, 17.8, 17.8, 17.8, 17.8, 17.8,17.9, 17.9,17.9,17.9,17.9, 17.9, 17.9, 17.9,17.9,18.0, 18.0, 18.0,18.0, 18.0,18.1, 18.1,18.1, 18.1,18.1, 18.1, 18.2, 18.2,18.3, 18.3];
%z=[13.7, 13.8, 13.8,13.8,13.8, 13.8,13.9, 13.9,13.9, 13.9, 13.9, 13.9, 13.9,13.9,13.9, 14.0, 14.0,14.0,14.0, 14.0, 14.0,14.0,14.0,14.0,14.0, 14.0, 14.0, 14.0, 14.0,14.0,14.0, 14.0, 14.0,14.0, 14.0,14.0,14.1, 14.1,14.1, 14.1, 14.1, 14.1,14.1, 14.1, 14.1, 14.1,14.1, 14.1,14.1, 14.1, 14.1, 14.1, 14.1,14.2, 14.2,14.2,14.2, 14.2,14.2, 14.2, 14.2,14.2, 14.2, 14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3, 14.3, 14.3, 14.3,14.4, 14.4,14.4, 14.5, 14.5,14.5, 14.6,14.8, 15.3];
%z=[15.2, 15.6,15.6, 15.6, 15.6, 15.6, 15.6,15.6,15.6, 15.7,15.7,15.7,15.7, 15.7,15.7,15.7,15.7, 15.7, 15.7,15.7,15.7, 15.8,15.8, 15.8, 15.8,15.8, 15.8, 15.8,15.8, 15.8,15.8, 15.8, 15.9, 15.9,15.9, 15.9,15.9, 15.9,15.9, 15.9, 15.9,15.9, 15.9, 15.9,15.9,15.9,15.9,15.9,15.9, 15.9, 16.0,16.0,16.0,16.0,16.0,16.0,16.0, 16.0, 16.0, 16.0, 16.0,16.1,16.1,16.1,16.1, 16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.2,16.2,16.2, 16.2,16.2, 16.2, 16.3, 16.3,16.3, 16.3,16.4,16.4,16.4, 16.4, 16.6,16.7,16.7,17.0];
z=[13.7, 13.8,13.8,13.8,13.8,13.8,13.9,13.9,13.9, 13.9, 13.9, 13.9, 13.9,13.9,13.9, 14.0, 14.0,14.0,14.0, 14.0, 14.0,14.0,14.0,14.0,14.0, 14.0, 14.0, 14.0, 14.0,14.0,14.0, 14.0, 14.0,14.0, 14.0,14.0,14.1, 14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.1,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.2,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.3,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.4,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.5,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.6,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.7,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.8,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,14.9,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.1,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.2,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.3,15.4,15.4,15.4,15.4,15.4,15.4,15.4,15.4,15.4,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.5,15.6,15.6,15.6,15.7,15.7,15.7,15.7,15.7,15.7,15.7,15.7,15.8,15.8,15.8,15.9,15.9,15.9,15.9,15.9,15.9,15.9,16.0,16.0,16.0,16.0,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.3,16.3,16.5,16.6,16.7];
%z=[15.2, 15.6,15.6, 15.6, 15.6, 15.6, 15.6,15.6,15.6, 15.7,15.7,15.7,15.7, 15.7,15.7,15.7,15.7, 15.7, 15.7,15.7,15.7, 15.8,15.8, 15.8, 15.8,15.8, 15.8, 15.8,15.8, 15.8,15.8, 15.8, 15.9, 15.9,15.9, 15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,15.9,16.0,16.0,16.0,16.0,16.0,16.0,16.0,16.0,16.0,16.0,16.0,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.1,16.2,16.2,16.2,16.2,16.2,16.2,16.2,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.3,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.4,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.5,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.6,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.7,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.8,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,16.9,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.0,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.1,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.2,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.3,17.4,17.4,17.4,17.4,17.4,17.4,17.5,17.5,17.5,17.5,17.5,17.5,17.5,17.5,17.6,17.6,17.6,17.6,17.6,17.6,17.6,17.6,17.6,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.7,17.8,17.8,17.8,17.8,17.8,17.8,17.8,17.8,17.8,17.8,17.9,17.9,17.9,17.9,17.9,17.9,17.9,17.9,17.9,17.9,17.9,18.0,18.0,18.0,18.0,18.0,18.0,18.0,18.0,18.0,18.1,18.1,18.1,18.1,18.1,18.1,18.2,18.2,18.3, 18.3];
a=z.*-1;
l=length(a)
b=min(a);
c=max(a);
[mu,sigma,muci,sigmuci]=normfit(a)
%总体服从正态分布,返回值mu是X的均值的点估计值，sigma是标准差的点估计值, muci是均值的区间估计,sigmaci是标准差的区间估计.

d=sum(z);
for  i=1:l
    e(i)=sum(z(1:i))/d;
    
end
figure(1)
    set(1,'Position',[10,350,300,200])   %设定窗口位置及大小 
                            
figure(2)
    set(2,'Position',[350,350,300,200]) 
    
figure(1)
x=-20:0.1:-12;
p=normpdf(x,mu,sigma);%对均值为mu，标准差为sigma的正态分布的概率密度图 
 
hist(a,x) %描绘数组a的频数直方图的命令,将区间[min(a),max(a)]分为x个小区间： 

hold on
plot(x,p.*100,'r')
xlabel('电平值，单位:dbmv')
ylabel('函数值')
title('概率分布图')
 
figure(2)
%x=12:0.1:18
%x=15:0.1:20
%x=11:0.1:18
x=13:0.1:18;

h=normcdf(x,mu*(-1),sigma);%概率分布
hold on;
plot(z,e,x,h);
 
xlabel('电平值，单位:dbmv')
ylabel('累积概率值')
title('概率累积分布曲线')