Built-in function diff - methodology

2012 4 3
3 个回答
回答已采纳
6 次查看（30 天）

0 个投票

Hi,
What methodology is used in "diff"? Does it take forward or central differences, and what is the step? How can I check the source code?
Thanks in advance!

请先登录，再回答此问题。

更多回答（2 个）

Jan
Jan 2012-4-3

0 个投票

You cannot check the code of DIFF, because it is a built-in function. As Jonathan has said already, reading the doc will reveal the internal method. It is the difference of subsequent elements.

0 个投票

Thank you for the fast responses, I guess I'll need something else for my evaluation then. Have a good day!

2 个评论
显示 无 隐藏 无

Jan
Jan 2012-4-3
I guess you are looking for GRADIENT.
I'll check it out, yes. I was interested in the order of the error, as I'm getting slightly different numbers from those obtained by a closed form solution. (slightly = 0.002, which is a lot, in my opinion). However, thanks for the answer!

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by