清空筛选条件
清空筛选条件

find the values ​​in the row and column of the matrix by using the loop

3 次查看（过去 30 天）
busra dogru
busra dogru 2019-4-11
评论： Star Strider 2019-4-12
I have a matrix that consists of multiple rows and columns in a text file. I want to use the value in each row as x, the value in each column as y. How can I do this using a loop? Thanks in advance ..

请先登录，再回答此问题。

回答（2 个）

madhan ravi
madhan ravi 2019-4-12
datas=dlmread('Mymatrix.txt');
x=datas(:,1);
y=datas(:,2);
Star Strider
Star Strider 2019-4-12
Your ‘y’ values are not unique for each ‘x’ value.
If you want all the ‘y’ values for each ‘x’ value, this works:
D = load('Mymatrix.txt');
x = D(:,1);
y = D(:,2);
xyMtx = accumarray(x, y, [], @(x){x}); % All ‘y’ Values For Each ‘x’ Value
producing (for example):
x_1 = [xyMtx{1}] % ‘y’ Values For ‘x = 1’
x_3 = [xyMtx{3}] % ‘y’ Values For ‘x = 3’
x_20 = [xyMtx{20}] % ‘y’ Values For ‘x = 20’
that evaluate to:
x_1 =
2
93
x_3 =
1
2
3
92
93
94
x_20 =
4
5
6
89
90
91
Is that what you want?

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 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