Feature Selection using ReliefF function

Hello,

I am using the ReliefF feature selection in around 700 features (1 table column is one feature). I am getting an error that I should supply a numeric X. However, the X is always double. The fscmrmr function works well so I don't know why the relieff doesn't.

[idx,weights] = relieff(FeaturesData(:,2:700),ScoreData,10);

% Error using relieff (line 86) You must supply numeric X.
bar(weights(idx));
idx(1:10);
xlabel('Predictor rank');
ylabel('Predictor importance weight');

Informations:

ScoreData: 422×1 double

Values:

Min 1

Median 5

Max 5

Feature1_Mean: 422×1 double

Values:

Min -27.801

Median -0.064483

Max 22.406

Feature2 ...

Thank you in advance!

[Sulaymon Eshkabilov]

Could you pl., post your sample (very small portion of it) data table to view what you are inputting for X in relieff() fcn?