Matlab 中的矩阵尺寸+循环错误
原文：Matrix dimension + loop error in Matlab

我有矢量“ Xt”, Xt 维度为 12588 X 1. 。 从此矢量I 应用这个代码: S=sum (bas( Xt( 2) : end)- Xt( 1: end-1))) =2; 由此得出一个数字, S 是 1x1。 现在我的目标是...

降低病媒的层面
原文：Reducing the dimensionality of a vector

How can I reduce the size of a vector to a lower dimension? Say for example X:=(1,2,3,4,5,6,7,8,9,10) is a 10-D vector. Suppose I want to reduce it to a 5 dimensional space. Is there any way to do ...