编写一个在matlab中在屏幕上绘制框的功能

Question

调用该函数时，字符（ch）作为第一个参数，两个正整数表示要绘制的框的宽度和高度。它会自动使用指定的宽度和高度绘制一个带有字符（ch）的框。enter image description here

Answer 1

检查是否有效：

function drawBox(str,w,h)
ch = [0. 0.] ;
%% get four corners of box
N = 20 ;
x = linspace(ch(1),ch(1)+w,N) ;
y = linspace(ch(2),ch(2)+h,N) ;
[X,Y] = meshgrid(x,y) ;
X(2:end-1,2:end-1) = NaN ;
Y(2:end-1,2:end-1) = NaN ;
x = X(~isnan(X)) ;y = Y(~isnan(Y)) ;
plot(x,y,'.w') ; hold on
text(x,y,str)
axis off

来源：https://in.mathworks.com/matlabcentral/answers/314681-write-a-function-drawbox-which-draws-boxes-on-the-screen