how to delete data with special value in an array?

there is an array with 800 values, and the mean of these can be calculated.

I would like to delete the value over or less than 0.5 than the mean of the value. how can I do that?

Answer 1

[per isakson]

"to delete the value" Do you mean remove? If so, try this script which uses logical indexing

%%
vec = 1+2*randn( 1, 800 );  % sample data
avg = mean( vec );
vec( vec<avg-0.5 | avg+0.5<vec ) = [];
size(vec)

ans = 1×2

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