主要错误是没有正确理解使用diff（）函数。diff（f(x),a）要求f(x)是一个具体的函数，a是一个数值而不是一个数组。所以你写的dh=diff(h,a)是有问题的。根据你的问题，将代码重新改写（如下）后，运行得到
Create a numeric matrix. A = [1 -3 2;5 4 7;-8 1 3]; Find the modulus,mod(A,2), and convert it to a logical array for indexing. L = logical(mod(A,2)) L =3x3 logical array1 1 0 1 0 1 0 1 1 The array has logical1(true) values whereAis odd. ...
Create an object and assign a value to its property. obj = MyClass; obj.Prop1 = gca; Error setting property 'Prop1' of class 'MyClass'. Value must be numeric or logical. When you assign a value to the property, MATLAB®callsmustBeNumericOrLogicalwith the value being assigned to the...
the network object in the application, so your attempt to pass data into it for simulation into it doesn't call the network's overload of indexing but attempts to index into a "regular variable". You can't ask for element 0.06235 of a numeric array and that's the cause of the...
MATLABLanguage FundamentalsData TypesNumeric TypesLogical Help Center및File Exchange에서Logical에 대해 자세히 알아보기 웹사이트 선택 번역된 콘텐츠를 보고 지역별 이벤트와 혜택을 살펴보려면 웹사이트를 선택하...
MATLAB also accepts logical indexing, which can be useful when working with conditional statements. For example, say you want to know the values of "A" that is larger than 7. Use the > operator to return a logical array whose elements are logical 1 when an ele...
Create a numeric matrix. A = [1 -3 2; 5 4 7; -8 1 3]; Find the modulus,mod(A,2), and convert it to a logical array for indexing. L = logical(mod(A,2)) %需要注意的是mod函数,这个函数是mod(a,m),也就是得到的是a除以 % m以后的余数。所以此时的mod(A,2)得到的就是A的elem...
There's no such thing as the 1.5th element of either x or y in MATLAB, which is what you're trying to use as inputs to f on the third line of this code segment. Numeric indicesmustbe real positive finite integer values. 댓글 수: 0 ...
你的belta是2x1向量，belta<( ) 返回的也是2X1，不能与前面的做逻辑运算。这种小问题很好检查的，你把那个长表达式的每一个运算单独跑一下，一眼就看出来了。是否可以解决您的问题？
(1998). Numeric mutation as an improvement to symbolic regression in genetic programming. Evolutionary Programming VII, Lecture Notes in Computer Science, Springer Verlag KG, 1447, 251–260. Article Google Scholar Giustolisi, O. (2004). Using genetic programming to determine Chèzy resistance ...