Question

我的Matlab情节有问题。我必须在我收集的数据点上使用sin函数。我成功了，但当我尝试通过set函数输入一些参数（即LineWidth）时，它总是在set的行显示错误，我不知道为什么。

这是我的代码可行，但当我“激活”设置行时，它会显示错误：

 clear all;
 close all;
 C0 = [0]; C1 = [0]; C2 = [0]; C3=[0];
 run('traces3');
 traces3;
 t = datetime ('now');

gri = 0;
filename = 'image.png';
M = [(P(2,1)-P(1,1)), (P(4,1)-P(1,1)), P(1,1);
     (P(2,2)-P(1,2)), (P(4,2)-P(1,2)), P(1,2);
     0,0,1;];
 M2 = inv(M);

 clear tmp1;
 clear tmp2;
 tmp1 = size (C0);
 tmp2 = ones(tmp1(1),1);
 C_0 = (M2*([C0, tmp2])')';
 c0 = sortrows(C_0);
clear tmp1;
clear tmp2;
f0 = fit(c0(:,1),c0(:,2),'sin1');

figure(1)
A0 = size(c0);
a0 = c0(A0(1),1);
h0 = plot(f0, 'b-');xlim([0,a0])
hold on
h_0 = plot(c0(:,1),c0(:,2),'bo');xlim([0,a0])
coul=1;

tit=['File: "',filename,'" ',datestr(t)];
title(tit,'FontSize',20,'Color','k')
f0a=num2str(round(f0.a1,2)); f0b=num2str(round(f0.b1,2)); f0c=num2str(round(f0.c1,2)); 
legend('C0 raw',['F0(x)=', f0a ,'*sin(', f0b ,'x+', f0c ,')'],'Location','southwest')
if(gri~=0)
    grid on
end
%set(h0,'LineWidth', 2) %When I write this line in the code it doesn't work anymore...
hold off

print(tit,'-dpdf')

Answer 1

情节句柄h0=plot(...)是行对象的句柄数组，而不是图形对象!!!。

只需在绘图处理向量length(h0)处尝试每个h0行对象：

iline=1;
set(h0(iline),'LineWidth', 2);  % This line should work now...

拟合函数图的线宽

1 个答案: