指定边框线粗细后，加一句
' F: k( V$ W3 |) f" S" eset( gca, 'Layer','Top' )

仅供参考，应该是显示的问题，比如调整x范围
1 E+ r0 J) D) b; Iclear
clc
figure(2)
set(gcf,'color','w');

" S4 P( h: Q8 {) ], mx=[1:61];
- P7 C9 w  Y. oy=[1:25];
data0 = ones(61,25);
2 a; w$ f7 M! R, M+ k& E
# v2 s, C! r5 ?5 ^p1=pcolor(x,y,data0');hold on;
" C9 \8 x2 R8 E& naxis equal;
set(p1,'LineStyle','none');
xlim([x(1)-0.5 x(end)+0.5]);ylim([y(1) y(end)]);
! }$ W& j# x3 H) ], @$ r
lw0=1.8;
) Y! w* n8 V# ?" B  t/ W, Ufs0=8;
set(gca,'linewidth',lw0)
set(gca,'FontSize',8,'FontWeight','bold');

hh=colorbar('southoutside');
3 w8 i, o/ e" L5 S* u/ d! p/ k, l& lset(hh,'linewidth',lw0)
set(gca,'linewidth',lw0)