q742971636的博客

文章目录0 开局一张图，PS打开另存为jpg格式的图像。第一步，右键图片用windows图片编辑器打开图。然后用白色画笔覆盖，留一条曲线出来就行。第二步，打开getdata软件。第三步，打开图像。第四步，设置坐标。第五步，取出数据。第六步 导出数据 可以用getdata自带的，麻烦。提倡直接鼠标拉取想要的数据。拉取选好后 ctrl+C复制第七步 桌面新建一个txt文件， ctrl+V把刚才的数据粘贴进去。保存后关闭记事本。第八步，复制粘贴wada.txt到matlab工作空间。第九步，写脚本画曲线。第十

x=[0 100 300 600 1000 1500 ];y1=[68.1 66.7 61.7 44.68 28.4 17.2];y2=[1.67 1.76 2.1 3.5 5.6 7.7];hold on;[AX,H1,H2] =plotyy(x,y1,x,y2,@plot);% 获取坐标轴、图像句柄set(get(AX(1),'ylabel'),'string', '耦合效率（%）','fontsize',16);set(get(AX(2),'ylabel'),'string',

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clc,clearx=[0,1,2,3,4];%y=[0,0.075,0.086,0.052,0.0024];y=[0,0.037,0.025,0.037,0];scatter(x,y,'k'); %画出原始数据散点图hold onduoxiangshi = polyfit(x,...

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clear% creat all input variabledisp('（1）中为A1 （2）中为A2');A1 = [3.01,6.03,1.99; 1.27,4.16,-1.23; 0.987,-4.81,9.34];A2 = A1;A2(1,1) = 3.00;A2(3,1) = 0.990;b = [1,1,1]';% displa...

clcclearn=input('请输入矩阵的阶数n：');A=zeros(n);%构造矩阵Afor m=1:n A(m,m)=20;endfor m=1:n-1 A(m,m+1)=-8; A(m+1,m)=-8;endfor m=1:n-2 A(m,m+2)=1; A(m+2,m)=1;enddisp(A)%%%%%%%%...

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clc,clearsyms xnd=1e21*erfc(x/2/sqrt(4.85*(1e-14)*360000));q=1.6*1e-19;xi=1e-4;nx=nd+1e16;u=65+1265/(1+(nd/8.5/1e16)^0.72);f=int(u*q*nx,x,0,xi);rs=1/f;rs=vpa(rs);disp(rs);clear;syms ...

MATLAB 对实验数据的离散点进行n次的曲线拟合clc,clear% -----------------------------------------------------------------------------------------------% Written by QQ137712826% ---------------------------------------...

MATLAB 用很多图片 生成gif动图1、生成很多图我这里画了cos曲线和一个圆， (x0,y0)是切点，x0取值t = linspace(0.1,0.9,10);(xc,yc)是圆心。计算好之后，使用plot(xxxx1,y1,‘r’,xxxx2,y2,‘b’);%画出函数1和函数2的图形，然后saveas(gcf, num2str(count_num_single), ‘jpg’);保...