problem with gradient- index exceeds matrix dimensions.
显示 更早的评论
Does anyone know what is the problem with the following code? Many thanks.
>> ss=[ 1 9 19 31 45 61 79 99 121 145]; >> t2 = gradient(ss)
and I received error message below: "Index exceeds matrix dimensions."
I checked matlab help file, it says: FX = gradient(F), where F is a vector, returns the one-dimensional numerical gradient of F. Here FX corresponds to ∂F/∂x, the differences in x (horizontal) direction.
So I don't understand why it is not working now.
回答（2 个）
Guillaume
2015-11-6
1 个投票
Most likely you have a variable called gradient, so instead of calling the function gradient you're indexing into the variable. Since the variable has less than 145 elements, you get 'index exceeds matrix dimension'
Don't use matlab function names as variable names.
1 个评论
Thorsten
2015-11-6
Use
which gradient
just before gradient(ss) to see what gradient actually is.
类别
在 帮助中心 和 File Exchange 中查找有关 Matrix Indexing 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
