Charticulator GeoJSON sublayout
· One min read
Software Engineer
GeoJSON is a format for encoding a variety of geographic data structures.
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [125.6, 10.1]
},
"properties": {
"name": "Dinagat Islands"
}
}
The Charticulator has sub-layout features that allow to authors arrange Glyphs on Plot Segments.
Usually Charticulator uses x or y axes to determine positions of each Glyph.
Sub-layouts is one approach to integrate third party layouts like d3-geo, d3-hierarchy/tree, d3-hierarchy/pack e.t.c.
The d3-geo package uses to render GeoJSON into SVG path as part of Plot Segment and positioning Glyphs by given latitude, longitude column bindings.
Geo sub-layout has properties to load GeoJSON file, to specify expression for geo coordinate columns, projections, center of map, rotations, scale and translates rendering SVG on Plot Segment.
