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1answer
89 views

Conversion from Shapefile to TopoJSON format results in incorrect map when rendered using d3js

I am trying to build a map of Canada showing FSA boundaries using d3js. I got shape data from Statistics Canada ...
2
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1answer
280 views

Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js

My 'handcrafted' cartogram (How to create contiguous area cartograms in QGIS or R?) is ready to embed in code - I want to present it online with D3.js. Therefore I produced a topoJSON file of it - ...
2
votes
1answer
88 views

Converting from shp to geojson fails

I'm following Mike Bostock's tutorial, let's make a map, but for a map of Mexico. I want to display state boundaries. I was able to get the map of Mexico from Natural Earth Data's world maps. My ...
1
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1answer
141 views

TopoJSON without Quantization

I have been investigating using TopoJSON files to map floor plans for various buildings. As GeoJSON these files render perfectly, however after converting to TopoJSON they are missing a lot of the ...
3
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3answers
136 views

How to properly convert landmass NaturalEarth data into GeoJSON?

100% Newbie. I've been following Mike's d3 Map Tutorial and I've come up against a challenge. I guess my question essentially boils down to: how does one generate the proper GeoJSON/TopoJSON files ...
3
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1answer
341 views

How to avoid corrupt geometries when translating between TopoJSON and GeoJSON?

I'm trying to display some geojson vector features on a leaflet map. The size of my GeoJSON is too big (25.4mb of data, 8.47mb gzipped), so I'm trying to use a TopoJSON format to reduce the size ...