We present a synsemic analysis of the medieval portolan chart “Carta Pisana”, a map for marine navigation. We talked about this visual artifact even in this post (in italian).
You can find our visual analysis on Pdf:
https://sinsemia.files.wordpress.com/2011/04/vitanova_2_cartapisana.pdf
and on Prezi:
http://prezi.com/bmtr5omnilij/carta-pisana/
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Sinsemia 