how to get rid of tick marks on the top and right axes but still have a box around the plot and keep the tick marks on the left and bottom axes?

Is there an easy way to have a box around the plot. have tick marks on the left and bottom axes but no tick marks on the top and right axes?

I know one way to do this is to set(gca, 'boxoff'), and then plot two lines on the top and right edges of the plot. but I am wondering if there is a more sophisticated way to do this. because set(gca,'ticklength') affects all axes, and I am not sure if there is an easy way to apply it only to two of the axes (like the left and bottom ones).

Tbanks.