1.Matlab读取和写入文件 1 %读取数据 2 name=strcat('ptsinterval90_00000',num2str(0),'.txt'); 3 fid=fopen(name,'r'); 4 sizeA=[4 Inf]; 5 A =fscanf(fid,'%f %f %f %f',sizeA); 6 fclose(fid); 写入文件 set(hp1,'xdata',bbb(1,:),'ydata',bbb(2,:),'zdata',bbb(3,:)); M=size(bbb,2); name=strcat('laser_',num2str(i),'.txt'); fid=fopen(name,'a+'); for kk =1:M fprintf(fid,'%g %g %g\r\n',bbb(1,kk),bbb(2,kk),bbb(3,kk)); end fclose(fid); 保存矩阵 1 function [ flag ] = SaveMatrix( filename, mat,type ) 2 %SAVEMATRIX 此处显示有关此函数的摘要 3 % 此处显示详细说明 4 % type 1 数字 5 % type 2 字符 6 fid=fopen(filename,'wt');%写入文件路径 7 [m,n]=size(mat); 8 for i=1:1:m 9 for j=1:1:n 10 if j==n 11 if (type==1) 12 fprintf(fid,'%g\n',mat(i,j)); 13 elseif (type==2) 14 fprintf(fid,'%s\n',mat(i,j)); 15 end 16 else 17 if (type==1) 18 fprintf(fid,'%g\t',mat(i,j)); 19 elseif (type==2) 20 fprintf(fid,'%s\t',mat(i,j)); 21 end 22 end 23 end 24 end 25 fclose(fid); 26 flag=1; 27 end
2.强制刷新 drawnow;%强制刷新 3.动态增加数组 curR=[R t;[0 0 1]]; lineSeg=[1;1]; lineSeg=[lineSeg [1; 1]]; 4.线段拟合函数 polyfit 5.非线性最小二乘优化 lsqnonlin function DrawBoundingBox(xBnd,yBnd,zBnd,lineWidth,color) % DrawBoundingBox(xBnd,yBnd,zBnd,lineWidth,color) % % This function draws the wireframe box that as described by the limits in % xBnd, yBnd, and zBnd % % INPUTS: % xBnd = [xLow, xUpp] % yBnd = [yLow, yUpp] % zBnd = [zLow, zUpp] % hold on; % Draw the bottom: plot3(... xBnd([1,1,2,2,1]),... yBnd([1,2,2,1,1]),... zBnd([1,1,1,1,1]),... 'LineWidth',lineWidth','color',color); % Draw the top: plot3(... xBnd([1,1,2,2,1]),... yBnd([1,2,2,1,1]),... zBnd([2,2,2,2,2]),... 'LineWidth',lineWidth','color',color); % Draw the sides: plot3(... xBnd([1,1]),... yBnd([1,1]),... zBnd([1,2]),... 'LineWidth',lineWidth','color',color); plot3(... xBnd([1,1]),... yBnd([2,2]),... zBnd([1,2]),... 'LineWidth',lineWidth','color',color); plot3(... xBnd([2,2]),... yBnd([2,2]),... zBnd([1,2]),... 'LineWidth',lineWidth','color',color); plot3(... xBnd([2,2]),... yBnd([1,1]),... zBnd([1,2]),... 'LineWidth',lineWidth','color',color); end 7.matlab中小数取整的函数大约有四个:floor、ceil、round、fix 8.plot3函数绘制点的大小 plot3(model(1,:),model(2,:),model(3,:),'r.',data(1,:),data(2,:),data(3,:),'b.','MarkerSize',1), hold on, axis equal 9.运行时间计算 tic; time=toc; 10.绘制箱线图 11.matlab plot函数绘制点符号
[ + | o | * | . | x | square | diamond | v | ^ | > | < | pentagram | hexagram | - | : ] "+":"+"形线
"o":"o"形线
"*":"*"形线
".":"."形线
"v":"v"形线
"^":"^"形线
">":">"形线
"<":"<"形线
"square": 正方形
"pentagram": 五角形
"hexagram": 六角形
"-": 实线
":": 虚线
[ y | m | c | r | g | b | w | k ]
y: 黄色
m: 粉红
c: 亮蓝
r: 大红
g: 绿色
b: 蓝色
w: 白色
k: 黑色
12.set(gcf,'Color',[1,1,1]); % 修改背景色 |
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