Delete rows from array

I have an array called yi1

It has more than 10,000 rows.

How can I delete all rows from 10,000 upwards?

Answer 1

[James Tursa]

yi1 = your matrix
yi1(10000:end,:) = [];

Answer 2

[Image Analyst]

Another way. Assuming a 2D array:

yi1 = yi1(1:9999,:); % Extract first 9,999 rows