how to read eeg signal by column from excel file(matrix)?

%reading signals by column from file/14 channel

sig=importdata('file.xlsx');

P4=sig(:,1);

O2=sig(:,2);

P8=sig(:,3)

........

[nada aldeeb]

please help me i,m not good in matlab programing..thanks

[Walter Roberson]

readtable()

[nada aldeeb]

pllease i need to full code if you can please help me.

Answer 1

[Walter Roberson]

sig = readtable('file.xlsx');
P4 = sig{:,1};
O2 = sig{:,2};
P8 = sig{:,3};

There is a more compact but harder to understand version for the case that all columns of the table are numeric and you are assigning them all:

sigcell = num2cell(readmatrix('file.xlsx'), 1);
[P4, O2, P8, Q3, N7, R2D2, C3P0, OB1, Number5, Fifth, V, Number6, Agent99, Experiment626 ] = deal(sigcell{:});

Your R2019a version is the first version that supported readmatrix(); older versions would need

sigcell = num2cell(table2array(readtable('file.xlsx')), 1);