Matlab function to take matrix as input and return elements in its four corners as output
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Hello, good day all, please I'm having difficulties writing a function to take a matrix input, and return the elements in its cour corners as an output.
Here is my code:
function [top_left,top_right,bottom_left,bottom_right] = corners(i,r,c)
A = matrix(i,r,c)
top_left = A(1,1);
top_right = A(1,c);
bottom_left = A(r,1);
bottom_right = A(r,c);
function B = matrix(i,r,c)
ind = i;
row = r;
col = c;
B = randi(ind,row,col);
I keep getting Not enough input arguments.
Error in corners (line 2)
A = matrix(i,r,c)
I'll appreciate your response. Thanks.
5 件のコメント
Jonathan Deepak
2020 年 10 月 1 日
編集済み: DGM
2023 年 2 月 12 日
you can also use the function like this
function [a,b,c,d]= corners(l)
a= l(1,1);
b=l(1,end);
c=l(end,1);
d=l(end,end);
end
採用された回答
Matt J
2019 年 2 月 7 日
編集済み: Matt J
2019 年 2 月 7 日
Maybe this is what you really want:
function Acorners = corners(A)
Acorners=A([1,end],[1,end]);
end
7 件のコメント
ANSHUMAN SARTHAK MEHER
2020 年 9 月 19 日
Acorners=A([1,end],[1,end]); how this helped us? can you please make me understand
Matt J
2020 年 9 月 19 日
It gets the corners. Did you try it?
>> A=nan(5); A(:)=1:25
A =
1 6 11 16 21
2 7 12 17 22
3 8 13 18 23
4 9 14 19 24
5 10 15 20 25
>> A([1,end],[1,end])
ans =
1 21
5 25
その他の回答 (5 件)
mayank ghugretkar
2019 年 6 月 3 日
function [top_left,top_right,bottom_left,bottom_right] = corners(M)
top_left = M(1,1);
top_right = M(1,end);
bottom_left = M(end,1);
bottom_right = M(end,end);
end
here's the code to call:
A = randi(100,4,5)
[top_left, top_right, bottom_left, bottom_right] = corners(A)
B = [1; 2]
[top_left, top_right, bottom_left, bottom_right] = corners(B)
I think this will be much simpler approch..
3 件のコメント
Matt J
2019 年 2 月 6 日
編集済み: Matt J
2019 年 2 月 6 日
I get no errors of any kind when I run your code, e.g.
[top_left,top_right,bottom_left,bottom_right] =corners(10,10,10)
gives
top_left =
4
top_right =
7
bottom_left =
7
bottom_right =
4
The only reason I can think of is you have a another function called matrix() higher in your path which is hiding the one you really want. Try,
>>which -all matrix
4 件のコメント
Jos (10584)
2019 年 2 月 7 日
編集済み: Jos (10584)
2019 年 2 月 7 日
Strictly speaking, your function corners does not take a matrix input.
I think you asked to do something like this
function out = corners(M)
% M is the input matrix
out(1) = M(1,1)
% etc
TADA
2019 年 2 月 6 日
編集済み: TADA
2019 年 2 月 6 日
I Don't See Any Particular Problem With That Line.
The Problem Is Possibly That You Didn't Send Input Or Enough Input To corners When You Invoked It.
Try Calling Cornenrs From The Command Window With Valid Values, Or When You Run Using the Run Button T The Top Or Using F5, You Can Specify Input At The Run Button Menu
0 件のコメント
harish kolla
2019 年 6 月 16 日
function [top_left,top_right,bottom_left,bottom_right]= corners (A)
top_left= A(1,1)
top_right= A(1,end)
bottom_left=A(end,1)
bottom_right=A(end,end)
end
4 件のコメント
ilker melik
2020 年 5 月 3 日
編集済み: ilker melik
2020 年 5 月 3 日
I get this idea of output argument and accesibility. But I defined also top_right, bottom_left and bottom_right as output argument. But why does particularly top_left pops out as an ans instead of other output arguments.
Stephen23
2020 年 6 月 7 日
"But I defined also top_right, bottom_left and bottom_right as output argument."
You defined them in the function, but you did not use any output arguments when calling the function.
How to call functions (with multiple output arguments) is explained in Steven Lords comment above and also in the introductory tutorials:
nor el houda bouhaddoun
2020 年 5 月 19 日
please can anybody help me because i don't know where the probleme is :
function [top_left, top_right, bottom_left, bottom_right]= corner(A)
top_left= A(1,1);
top_right= A(1,end);
bottom_left= A(end,1);
bottom_right = A(end, end);
end
and it gives me this:
>> A = randi(100,4,5)
??? Undefined function or method 'randi' for input arguments of type 'double'.
and the m-file is in the current directory
1 件のコメント
Stephen23
2020 年 5 月 19 日
@nor el houda bouhaddoun: please show us the output of this command:
which randi -all
What MATLAB version are you using?
Is this your own computer and MATLAB installation, or that of your school/university/whatever ?
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