Unable to perform assignment because the left and right sides have a different number of elements.

I am trying to find solution for the below code.. The excel file has 7935 data of d variable in a single column.

I have to find the position of HL and store the index value. It shos the error message of "Unable to perform assignment because the left and right sides have a different number of elements." after assigning 10th variable in the loop.

T = xlsread('CPT_13_14_15_18_22.xlsx','U-13');
d = T(:,1);
uw = T(:,2);
HL = [0.5 26.2 29.5 32.9 38.2 40.7 47.15 48.75 49.75 58.65 59.9 61.1 69.5 71.6 88 90.1 121.15];
for i = 1:length(HL)
    a(i) = find(d==HL(i));
end

Answer 1

[Cris LaPierre]

This error occurs because you are trying to assign more than 1 value to one element of a.

% this Works
a(1) = 5;
% This duplicates the error
a(2) = [2 3]

Unable to perform assignment because the left and right sides have a different number of elements.

You either need to ensure you only assign a single value, or adjust the assignment so that the number of elements indexed are the same on the left and right of the equals sign.

% Use a cell array
b(1) = {[2,3]}

b = 1×1 cell array
    {[2 3]}

% Or specify the columns, too
c(1,:) = [2,3]

c = 1×2

2 3