Unable to perform assignment because the size of the left side is 111-by-1 and the size of the right side is 112-by-1.

Hi,

I am unable to figure it out or understand what is happening here. i am trying to do the plotting of certain column from 3 csv files (files are attached) but getting the error below.

Error:

Unable to perform assignment because the size of the left side is 111-by-1 and the size of the right side is 112-by-1.

Error in FlushFlow_DataComparison (line 11)

col_1_distance(:,i) = table2array( data(:,1) ); % get the 13th column of each file

Code:

close all; clear all; clc;

P = 'F:\3-PIV_Experimental_Data\Calculations_TurbulentIntensity\line_Data\LSA_FlushflowMag_Data';

S = dir(fullfile(P,'*.csv'));

N = natsortfiles({S.name});

for i = 1:numel(N);

data = readtable( fullfile(P, N{i}) ); % read the csv files

col_1_distance(:,i) = table2array( data(:,1) ); % get the 13th column of each file

col_7_TurbulentIntensity(:,i) = table2array( data(:,7) );

end

plot (col_1_distance,col_7_TurbulentIntensity,'*-');

Answer 1

[KSSV]

The error is siimple, you are trying to save more number of elements than the array is initialized for.

A = zeros(2,3) ;    % 2x3 matrix is initialized 
A(1,:) = rand(1,2) ; % no error, 1 1x2 array is saved 

Unable to perform assignment because the size of the left side is 1-by-3 and the size of the right side is 1-by-2.

A(2,:) = rand(1,3) ;  % error, you cannot save 1x3 array into 1x2 

In the same, way check your initialized array dimensions. If you are sure of array size, initiailze it as a matrix. If not initialize it as cell .

B = cell(2,1) ;
B{1} = rand(1,2) ;
B{2} = rand(1,3) ;