Deleting rows in Matlab

2012 5 9
1 个回答
8 次查看（30 天）

0 个投票

I have a large column vector (col1) I have the following code:
notcontacts=(col1(:,1)>600);
col1=col1.*notcontacts
Now I want to to delete all of the zeros that are in the column of data so i have the following (col2) which is only made up of the values that are greater than less than 600.

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Oleg Komarov
Oleg Komarov 2012-5-9
Not very clear, so do you want values which are not 600? (greater and less...)
charles atlas
charles atlas 2012-5-9
I am sorry, typo... I want a column (col2) of numbers that are less than 600. Ex:
col1=[0 0 456 245]
then after column manipulation I want:
col2=[456 245]
charles atlas
charles atlas 2012-5-9
I meant to say less than 600 not "greater than less than"

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Oleg Komarov
Oleg Komarov 2012-5-9

0 个投票

EDITED
idx = idx = col1(:,1) < 600 & col1(:,1) ~= 0;
col2 = col1(idx, 1);

4 个评论
显示 2更早的评论 隐藏 2更早的评论

Richard Brown
Richard Brown 2012-5-9
urgh, this question illustrates how bad this code font is! we can't tell the difference between col1, co11, and coll!
Geoff
Geoff 2012-5-10
That's odd... It renders okay in Firefox on Windows. Using some kind of courier-based font. But I'm sitting rather close to a biggish screen.
Geoff
Geoff 2012-5-10
@Oleg : You forgot the removal of zeros:
idx = col1(:,1) < 600 & col1(:,1) ~= 0;
Oleg Komarov
Oleg Komarov 2012-5-10
Thanks Geoff, amended.

请先登录，再进行评论。

类别

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

产品

标签

Community Treasure Hunt

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

Start Hunting!

Translated by