What is the meaning of vec2ind "Convert vectors to indices"?

vec2ind

vec = [0 0 1 0; 1 0 0 0; 0 1 0 0]'

vec =

0 1 0

0 0 1

1 0 0

0 0 0

[ind,n] = vec2ind(vec)

ind =

3 1 2

n =

4

Any idea how to get the "3 1 2"?

Thank you

[Stephen23]

'Any idea how to get the "3 1 2"?"'

It is just the rows that the ones are in. It is basically the same as

[idx,~] = find(vec)

[Matlaber]

Thanks!

I got the meaning now.

I am trying this LDA link here MathWorks

%% Load Data
data=load('iris');
X = data.Inputs';
T = data.Targets';
L = vec2ind(T')';
%% Linear Discriminant Analysis (aka. Fisher Discriminant Analysis)
[Y, W, lambda] = LDA(X, L);

still unable to figure out why

L = vec2ind(T')';

meaning for.

Thank you.

[Star Strider]

The first transposition gets the values for the columns (rather than rows), then the second transposition creates ‘L’ to be the same dimensions ‘T’ originally is.

[Matlaber]

Thanks.

Are you able to

data=load('iris');

It said:

>> data=load('iris');
Error using load
Unable to read file 'iris'. No such file or directory.

I am able to

data=load('fisheriris');

in sample dataset in mathwork Simple Data Set link

But cannot find "iris" dataset

Thank you.