how to calculate mean value in each row of data?

조회 수: 60 (최근 30일)
Retno Purwaningsih
Retno Purwaningsih 2021년 10월 20일
댓글: Retno Purwaningsih 2021년 10월 20일
Hello everyone, i want to ask some help with my script.
I have a file with different number of column in each row, and i want to calculate the mean value of each row start from column 4 to end than write it in the new file.
This is my script
clear;
clc;
format short;
f = dir('D:\full_Data_Cryosat_c2p0004.txt');
readlines = @(F)regexp(fileread(F),'\r?\n','split');
for A = 1 : length(f)
D = f(A).name;
ff = D(:,19:25);
S = readlines(D);
data = cellfun(@(s) sscanf(s, '%f', [1 inf]), S);
mask = cellfun(@length, data) < 4;
data(mask) = []; %get rid of lines too short
referensi = cellfun(@(L) L(1), data);
lat = cellfun(@(L) L(2), data);
lon = cellfun(@(L) L(3), data);
means = cellfun(@(L) mean(L(4:end), 'omitnan'), data);
msl = [referensi(:), lat(:), lon(:), means(:)];
file_name = ['Msl_' ff];
dlmwrite(file_name, msl, 'delimiter', '\t');
end
But i'm facing an error like this
Error using cellfun
Non-scalar in Uniform output, at index 1, output 1.
Set 'UniformOutput' to false.
Error in script_msl (line 13)
data = cellfun(@(s) sscanf(s, '%f', [1 inf]), S);
Thanks for helping me

채택된 답변

Cris LaPierre
Cris LaPierre 2021년 10월 20일
Use mean and specify the dimension (1=down rows, 2=across columns)
  댓글 수: 5
Cris LaPierre
Cris LaPierre 2021년 10월 20일
Ah, I see you are using R2017a. The syntax was slightly different back then.
data = readtable('full_Data_Cryosat_c2p0004.txt','HeaderLines',0)
mData = mean(data{:,4:end},2,'omitnan')
Retno Purwaningsih
Retno Purwaningsih 2021년 10월 20일
yeasss that absolutely work !!! Thank youu so much for helping me ^^

댓글을 달려면 로그인하십시오.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Cell Arrays에 대해 자세히 알아보기

제품


릴리스

R2017a

Community Treasure Hunt

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

Start Hunting!

Translated by