Info
この質問は閉じられています。 編集または回答するには再度開いてください。
Question about making a function file with vectors and variables
1 回表示 (過去 30 日間)
古いコメントを表示
Question deleted by James. Partially restored by Matt Fig:
a part of my program has syntax that looks like this,
for n=1:1:A1 if (Z(n)<3 | Z(n)>9 | Z(n)~=Z(n)) disp('One or more of the element/s is/are not included.'); return;
elseif ~isnumeric(Z(n)) disp('There is error') return; end
so if i enter:
function_name ([3 4 A], [4 5 6])
matlab says: Undefined function or variable 'A'.
2 件のコメント
Jan
2012 年 9 月 20 日
Why do you delete your question? Then the work of the once, who wanted to help you, is lost. Not friendly.
Matt Fig
2012 年 9 月 21 日
OP:
a part of my program has syntax that looks like this,
for n=1:1:A1 if (Z(n)<3 | Z(n)>9 | Z(n)~=Z(n)) disp('One or more of the element/s is/are not included.'); return;
elseif ~isnumeric(Z(n)) disp('There is error') return; end
so if i enter:
function_name ([3 4 A], [4 5 6])
matlab says: Undefined function or variable 'A'.
回答 (4 件)
Wayne King
2012 年 9 月 20 日
編集済み: Wayne King
2012 年 9 月 20 日
MATLAB will do that on its own.
>> clear A % in case A is in the workspace
>> a=[1 2 A 4]
The MATLAB error message will be:
Undefined function or variable 'A'.
1 件のコメント
Wayne King
2012 年 9 月 20 日
If A is not a variable in the workspace, then inputting it into a function will cause an error
function sumout = testfunction(input1 )
sumout = sum(input1);
end
If you call that function with
>>sumout = testfunction([1 2 3 A 4]);
throws an error. You can always use isnumeric() if you want
if ~isnumeric(input)
error( )
end
1 件のコメント
Jan
2012 年 9 月 20 日
After A = 1; a = [1,2,A,4]; there is no method to detect, if a has been created using numbers, functions or other variables. When A is e.g. a character array, it is converted to double implicitly:
A = 'Z';
a = [1, 2, A, 4] % ==> [1, 2, 90, 4]
Here A is converted to the type DOUBLE and the ASCII value 90 is stored. Afterwards a is a double vector as all its elements have the same type.
I think, you have a different problem. Perhaps you want to test the class of A before inserting into the vector.
0 件のコメント
この質問は閉じられています。
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!