Matlab not generating pdf file with accurate measure

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King Fisher on 30 Mar 2016

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https://uk.mathworks.com/matlabcentral/answers/276166-matlab-not-generating-pdf-file-with-accurate-measure

I am generating a *pdf* by saving a *figure* generated from following *Matlab code*. When *x=4*, it generated a *square* whose measure is exactly *4 inch* using *pdf measure tool*. But when *x=5*, something went wrong and generated *pdf loses accuracy*(check the snaps below).

I am actually trying to draw an accurate square (whose pdf measure tool measure the same dimension as defined by x), such that center of the printed square, and the center of the US letter (8.5" x 11") matches exactly.

    clear all
    close all   
    x=4;
    plot([0 x  x 0], [0 0 x x]), axis tight
    % set(gca, 'Position',[0.1 0.1 .8 .8])
    set(gca, 'Units','inches', 'Position',[1 1 x x])
    set(gcf, 'Units','inches', 'Position',[0 0 x+2 x+2])
    % set(gcf, 'PaperUnits','inches', 'PaperPosition',[0 0 8.5 11])
**X=4**(measure tool says 4 inch). Square is equally far apart from right and left, and from top and bottom.