replace numbers in the matrix

4 次查看（过去 30 天）
EK
EK 2022-12-18
编辑： Image Analyst 2022-12-19
Hello,
I have a matrix of 6 columns (an example attached here) that are: trials, stimulus IDs, Hit, Miss, CR, FA.
Hit, Miss, CR, FA columns are coded as a 0 and 1. Sometimes the correspondent rows in FA and CR column are coded with 1. I need to correct this and everywhere when FA row = 1 replace correspondent row im CR column with 0
Can anyone help with this?
  1 个评论
Torsten
Torsten 2022-12-18
Better you immediately give the matrix you expect as result in the above case to avoid unnecessary attempts.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2022-12-18
编辑：Image Analyst 2022-12-18
Ran in:
Try this:
data = readmatrix('trial.log.xlsx');
% Colulmns are: trials, stimulus IDs, Hit, Miss, CR, FA.
% Find where last column, FA, is 1
rows1 = data(:, end) == 1;
% "replace correspondent row im CR column from with 0 "
% In English: "replace the element in the corresponding row in the CR column with 0"
data(rows1, 5) = 0
data = 19×6
1 4 0 0 1 0 2 3 1 0 0 0 3 3 1 0 0 0 4 4 0 0 1 0 5 3 0 1 0 0 6 4 0 0 0 1 7 3 0 1 0 0 8 4 0 0 1 0 9 4 0 0 1 0 10 3 0 1 0 0
  4 个评论
显示 2更早的评论
EK
EK 2022-12-18
yes it is only in case if both CR and FA are equal 1
Image Analyst
Image Analyst 2022-12-19
编辑：Image Analyst 2022-12-19
Oh, I thought that "Sometimes the correspondent rows in FA and CR column are coded with 1" but that you only wanted to set CR to zero when "when FA row = 1". But if what you really meant was "when FA row = 1 AND when CR row = 1", then you can make the obvious change:
data = readmatrix('trial.log.xlsx');
% Colulmns are: trials, stimulus IDs, Hit, Miss, CR, FA.
% Find where 5th column is 1 and the last column, FA, is 1.
% That is, both 1 in the same row.
rows1 = (data(:, 5) == 1) & (data(:, end) == 1);
% "replace correspondent row im CR column from with 0 "
% In English: "replace the element in the corresponding row in the CR column with 0"
data(rows1, 5) = 0

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Preprocessing 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by