ginput

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yahya aktas
yahya aktas 2012-4-20
评论： Yunus 2014-12-8
The question is that: Read 12 arbitrary numbers from the keyboard to a vector one at a time. The numbers should all be in the range 0-20. The m-file should ask for a new number until the vector has 12 elements.The input from the keyboard must come after a request. When the vector has 12 elements it should present them as a matrix dispalyed in the command window. There should also be a plot of the numbers. Present them with ’*’ in the plot. They should be connected with a dotted line. The second part of the m-file should have a graphical reading. Mark the twelve points by a click with the mouse button in the plot ( use ginput !). Then round these twelve points towards nearest integer. Put these twelve rounded values together with the twelve original values in a matrix ( different columns). Display the matrix in the command window and put a comment there as well. Hint: Use a for-loop and ginput. Use help to find out how these work !
and my code is:
D=cell(1,12) for i=1:12, D{1,i}=input('Give me any number between 0 and 20:\n'); end celldisp(D); Z=[D{1} D{2} D{3} D{4} D{5} D{6} D{7} D{8} D{9} D{10} D{11} D{12}]; disp(Z);
x=1:1:12; plot(x,Z,'r--*','linewidth',2); axis([0 12 0 20]); xlabel('x axis') ylabel('inputs')
for i=1:12, [X,Y] = round(ginput(i)); end
it gives error like that
Error using round Too many output arguments.
Error in assignment2 (line 20) [X,Y] = round(ginput(i));
why it gives an error like that ?
Yahya Aktaş

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采纳的回答

yahya aktas
yahya aktas 2012-4-20
yes now it works fine but it wants from me always mouse click I only want the my twelve points by clicking..
Thank you for your answer.
  1 个评论
Thomas
Thomas 2012-4-20
Check my edited answer and please accept the answer if you found it helpful and solved your problem..

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更多回答（2 个）

yahya aktas
yahya aktas 2012-4-20
D=cell(1,12)
for i=1:12,
D{1,i}=input('Give me any number between 0 and 20:\n');
end
celldisp(D);
Z=[D{1} D{2} D{3} D{4} D{5} D{6} D{7} D{8} D{9} D{10} D{11} D{12}];
disp(Z);
x=1:1:12;
plot(x,Z,'r--*','linewidth',2);
axis([0 12 0 20]);
xlabel('x axis')
ylabel('inputs')
for i=1:12,
[X,Y] = round(ginput(i));
end
Thomas
Thomas 2012-4-20
Try
for i=1:12,
[X,Y] = ginput(i);
end
X=round(X);
Y=round(Y);
EDIT for 12 inputs
remove for loop
[X,Y]=ginput(12);
X=round(X);
Y=round(Y);
  2 个评论
yahya aktas
yahya aktas 2012-4-20
yes know everything is okey thank you very much for your answers..
kind regards..
Yahya Aktaş
Yunus
Yunus 2014-12-8
To Yahya aktaş
merhaba abi resmin belirli bölgesini seçip oradaki piksellerin konum bilgisini nasıl alabilirim ?

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