MATLAB: How to change ONLY Xtick direction (or Ytick direction)

MATLABx tick direction

I know I can set the tick direction to be pointing in our outside the plot box with 
set(gca, 'TickDir', 'out')
I am trying to ONLY change the Xticks to point out but 'XTickDir' is not a property and I can't find anything in the docs about changing only 1 direction. Is it possible?

Best Answer

You have to set the properties of the specific axis. 
figure
plot(1:10)
ax = gca;
xax = ax.XAxis; % xax = get(ax,'XAxis'); 
set(xax,'TickDirection','out')
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