divide data set in matlab code

How can divide dataset into 80% training set and 20% test set in matlab code??

Answer 1

[Walter Roberson]

nrows = size(YourData,1);
r80 = round(0.80 * nrows);
trainingset = YourData(1:r80,:,:);
testset = YourData(r80+1:end,:,:);

[Walter Roberson]

nrows = size(YourData,1);
r80 = round(0.80 * nrows);
rand80 = randperm(nrows,r80);
trainingset = YourData(rand80,:);
testset = YourData;
testset(rand80,:) = [];

[Suzanne Hussein]

?? Error using ==> randperm Too many input arguments.

Error in ==> dividet at 3 rand80 = randperm(nrows,r80); how can i solve it?

[Walter Roberson]

You are using an old version of MATLAB. The equivalent code is

rand80 = randperm(nrows);
rand80 = rand80(1:r80);

Answer 2

[Image Analyst]

randperm() is probably the function you're looking for. We can help more if you say what your dataset is.

dataset is a deprecated variable type - the Mathworks recommends that you use a table instead.

[Suzanne Hussein]

my dataset is 99X13 double, 12 Dimensions and last column is label of classes