大家好!我看过help,但有些不懂。看下面代码,我对r的理解如下:1,2为第1列非零元素的行数;1为第2列非零元素的行数;2,3为第3列非零元素的行数。v则是按列排序的非零元素数值。我这样理解对吗。
不过我对c看不懂,请指教
X =
3 2 0
-5 0 7
0 0 1
[r,c,v] = find(X)
returns a vector of row indices of the nonzero entries of X
r =
1
2
1
2
3
a vector of column indices of the nonzero entries of X
c =
1
1
2
3
3
and a vector containing the nonzero entries of X.
v =
3
-5
2
7
1