I need to place images at the top corners of my poster. Quite surprisingly, at (topright) is known, but (topleft) is an unknown shape. How so?

Full line (working):

\node[inner sep=0pt, below left, outer sep=0cm] (logo) at (topright) {\includegraphics[scale = 0.1]{logo}};

Full line (not working):

\node[inner sep=0pt, below left, outer sep=0cm] (logo) at (topleft) {\includegraphics[scale = 0.1]{logo}};


Simply because tikzposter doesn't define topleft, only topright and bottomleft. That's why it doesn't work.

You can define the missing corner coordinates yourself with e.g.

\coordinate (topleft)     at (topright -| bottomleft);
\coordinate (bottomright) at (topright |- bottomleft);

Or use (topright -| bottomleft) directly.


\coordinate (topleft)     at (topright -| bottomleft);
\coordinate (bottomright) at (topright |- bottomleft);

\node[inner sep=0pt, below left] (logoa) at (topright) {\includegraphics[width=15cm]{example-image-a}};

\node[inner sep=0pt, below right] (logob) at (topleft) {\includegraphics[width=15cm]{example-image-b}};

\node[inner sep=0pt, above right] at (bottomleft) {\includegraphics[width=15cm]{example-image-c}};

\node[inner sep=0pt, above left] at (bottomright) {\includegraphics[width=15cm]{example-image}};


enter image description here

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