Soft textual cartography is an approach aimed at extracting clusters of regions taking into account both their spatial relationships and a their textual description within a corpus. The strategy consists in constructing a complex weighted network, reflecting the geographical layout, and whose nodes are further characterized by their thematic dissimilarity, extracted form topic modelling. A soft k-means procedure, taking into account both aspects through expectation maximisation on Gaussian mixture models and label propagation, converges towards a soft membership, to be further compared with expert knowledge on regions. Application on the
Wikipedia pages of Swiss municipalities demonstrate the potential of the approach, revealing textual autocorrelation and associations with official classifications. The synergy of the spatial and textual aspects appears promising in topic interpretation and geographical information retrieval, and able to incorporate expert knowledge through the choice of the initial membership.