how to use variable outside the for loop

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singh 2015-4-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/213518-how-to-use-variable-outside-the-for-loop

评论： singh 2015-4-25

采纳的回答： Jan

在 MATLAB Online 中打开

suppose i use for loop and this is code

 N=20;
area=100;
X=rand(1,N)*area;
Y=rand(1,N)*area;
htext=[];
for i1=1:2
    for i=1:N
        htext(i)=text(X(i),Y(i),num2str(i),'fontsize',20);
        hold on
    end  
 end
 delete(htext)
for ii=1:5
      delete(htext(ii));
 end

now error is come when delete(htext) is execute plz give me some solution.

beacuse it show the message when cursor move on the htext variable 'htext size will be change every iteration '.how to delete hetxt value in for loop and out of for loop

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Jan 2015-4-25

Please post the complete error message in every case. A rough summary is not useful in the forum. Thanks.

singh 2015-4-25

jan simon see this pic.

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采纳的回答

Jan 2015-4-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/213518-how-to-use-variable-outside-the-for-loop#answer_176663

在 MATLAB Online 中打开

for i=1:5
  htext(i)=text(X,Y,num2str(i));
end
pause(1)
delete(htext)

delete can delete the complete vedtor in on step without a loop.

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singh 2015-4-25

jan,thnks for solution

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