Error using == Matrix dimensions must agree.

2018 2 26
1 个回答
更新时间：2018 2 26
1 次查看（30 天）

0 个投票

i have message error in matlab : Error using == Matrix dimensions must agree.
Error in Pengujian (line 39) [m,n] = find(output==target); please help me what can i do?

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Birdman
Birdman 2018-2-26
What are your output and target variables look like?
Novy Bua Rante
Novy Bua Rante 2018-2-26
编辑：Walter Roberson 2018-2-26
i will classification the image of green bean coffee using matlab with neural network backpropagation
---------
input = [metric;eccentricity];
target = zeros(1,96);
target(:,1:30) = 1;
target(:,31:51) = 2;
target(:,52:72) = 3;
target(:,73:96) = 4;
load net
output = round(sim(net,input));
[m,n] = find(output==target);
akurasi = sum(m)/total_images*100;
Walter Roberson
Walter Roberson 2018-2-26
Your net is not returning one result for each input, or else it is returning a column vector which you are trying to compare to a row vector. I suspect that is the problem, that you will need to transpose one of the two to compare them.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2018-2-26

1 个投票

Assuming that you are trying to find the indices of each value of output within the matrix target, then:
[tf, idx] = ismember(output, target);
m = zeros(size(output));
n = zeros(size(output));
[m(tf), n(tf)] = ind2sub( size(target), idx(tf) );
Any value that does not appear within target will have m and n pairs of 0.

类别

在 帮助中心 和 File Exchange 中查找有关 Image Data Workflows 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