MATLAB: Diagonal Line in fill plot

diagonal linefill

Got i hope a simple question for you all , in my foillowing code i have a random diagonal line and i have no idea where it is coming from?
any help would be great thank you in advance 🙂
RoadVerts =[-1,  9, 9,  11, 11, 21, 21, 11, 11, 9,  9,  -1, -1
            11, 11, 21, 21, 11, 11, 9,  9,  -1, -1, 9,   9, 11
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,   0, 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,   1, 1];
fill(RoadVerts(1:1,:),RoadVerts(1:2,:),'w');
xlim([0 20])
ylim([0 20])
zlim([0 5])

Best Answer

I guess you mean the diagonal from (0,0) to (21,21). Change the fill command to:
% Was: fill(RoadVerts(1:1,:),RoadVerts(1:2,:),'w');
fill(RoadVerts(1,:), RoadVerts(2,:), 'w');
1:1 can be simplified to 1, and 1:2 as second coordinate is most likely a typo.
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