1 Supplementary material

for the journal paper
Péter Jeszenszky1,3, Philipp Stöckle2,4, Elvira Glaser2, Robert Weibel1. 2018.
‘A GRADIENT PERSPECTIVE ON MODELLING INTERDIALECTAL TRANSITIONS’ Journal of Linguistic Geography 6(1).

1 Department of Geography, University of Zurich (UZH), Winterthurerstrasse 190, CH-8057, Zurich Email: peter.jeszenszky@geo.uzh.ch

2 German Department, University of Zurich (UZH), Schönberggasse 2, CH-8001, Zurich

3 Department of Geography, Ritsumeikan University Institute of Disaster Mitigation for Urban Cultural Heritage, 58, Komatsubara Kitamachi, Kita-ku, 603-8341, Kyoto

4 Austrian Academy of Sciences Austrian Centre for Digital Humanities (ACDH) Postgasse 7-9, 1010, Vienna

Sections 2, 3 and 4 present the eight variables shown in the journal paper in three different kinds of interactive 3-D Plots.

By clicking and dragging the plots you can turn them in all directions. Scrolling with your mouse controls zooming in and out of the plots.

In the plots the intensities of the main variants are represented in red and blue at each of the 383 survey sites. Thus, two spheres correspond to each survey site. The real positions of the survey sites are shown in the below map. If you turn the interactive plot such that the ‘top’ is facing towards you, you may see the geographic distribution pattern of the survey sites in the plots too, i.e., by their longitude and latitude values.

It is recommended to open this html in Chrome for optimal experience with the plot interactions.

2 Intensity plots of the main variants

Function used for the visualisation: rgl::plot3d, with some others extending its functionality.

I1 = Question A; I6 = Question B; I11 = Question C; IV14 = Question D; I3 = Question E; II1 = Question F; II3 = Question G; II30 = Question H;

You must enable Javascript to view this page properly.

3 Logistic surfaces fitted to the intensities

Function used for the fitting: stats::glm Function used for the visualisation: akima::interp

I1 = Question A; I6 = Question B; I11 = Question C; IV14 = Question D; I3 = Question E; II1 = Question F; II3 = Question G; II30 = Question H;

You must enable Javascript to view this page properly.

4 Tripartite subdivision of the intensity plots with planar trend surface fitted in the transition zone

Intensity points in the transition zone are presented with a lighter colour.

I1 = Question A; I6 = Question B; I11 = Question C; IV14 = Question D; I3 = Question E; II1 = Question F; II3 = Question G; II30 = Question H;

You must enable Javascript to view this page properly.