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How can I change the LineWidth according to several conditions?

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Valeria Lorenzoni
Valeria Lorenzoni 2018-4-25
回答： Image Analyst 2018-4-25
I am applying a compass plot and I would like the line's width changes according to certain conditions depending on one variable numress. I would like that if 0<numress<10 the LineWidth in plot plot is 0.5, if 10<numress<50 the LineWidth is 2. And so on
I tried this but does not work:
h=compass(u,v,'r')
if (0<=numress) & (numress<=10)
h.LineWidth=0.5
end
if (10<numress) & (numress<=50)
h.LineWidth=2
end
if (50<numress) & (numress<=100)
h.LineWidth=4
end
.
.
.
if (500<numress) & (numress<=550)
h.LineWidth=22
end
get(h,'LineWidth')
I tried with: get, set but the lines width do not change in my compass plotting. Can you please help me with this problem? Thank you
  1 个评论
jonas
jonas 2018-4-25
set(h,'linewidth',10)
should change all the lines stored in the handle 'h'. If you want to change specific lines then you must specify those lines as h(1), h(2)... etc

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采纳的回答

Image Analyst
Image Analyst 2018-4-25
Often you pass in the line width. So compute it in advance, then pass it in when you call compass():
h=compass(u, v, 'r', 'LineWidth', lineWidth); % lineWidth value computed in advance.

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