D3.js is a small, open-source JavaScript visualization library for manipulating HTML and SVG documents based on data

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Texture overlay in d3 map

D3 map can be drawn and colored as shown in this example : http://techslides.com/demos/d3/d3-world-map-zoom-points.html. I need to overlay a texture or image within the boundary of a given country. Is ...
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Topography: How to convert raster into vector layers?

(nb:This project is part of the #Wikipedia #wikimaps project) 1. Question: How to create vector topographic maps from raster image ? How to convert raster topographic image into closed vector ...
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D3, Polymaps and Lines

I'm quite new to d3 and Polymaps and I have a question to ask.. I am trying to connect two points using a line, using Polymaps and d3, my starting point is from this code that Mike provided ...
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translating and scaling viewport to fit geojson map in D3js

I am trying to load a map of Rio de Janeiro (Brazil) in GeoJson for with D3js the code and the map is here: https://gist.github.com/4157853 I can open the map normally with Qgis, but with d3js ...
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Simplifying TopoJSON causes leak of Natural Earth in d3

I'm working with topoJSON and D3 to display Natural Earth data on a globe. Obviously, we need to simplify our geometries while still keeping borders consistent. We've created a script as based on ...
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Venue/Indoor Map using D3.js and Geojson

I have created geojson file which contains all the features of 1st floor of a shopping mall. I got that venue map projected using d3.js with different colors but only some parts not the complete map. ...
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42 views

QGIS: Albers projection in lat lng?

I'm trying to make a map of Russia in the Albers projection. My projection string is: +proj=aea +lat_1=45 +lat_2=70 +lat_0=40 +lon_0=100 +x_0=20 +y_0=20 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m ...
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D3.js with dynamic geojson data (SQL server/.NET)

I have a $.ajax function which returns the geojson data from the asp.net mvc server method. I want to know how I could send that as a parameter to d3.json() function. Better if anyone shared code ...
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148 views

D3.js with dynamic geojson data

I have a $.ajax function which returns the geojson data from the asp.net mvc server method. I want to know how I could send that as a parameter to d3.json() function. Better if anyone shared code ...
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42 views

Filtering a Topojson on server-side. Which part of topology I need?

I have a big Topojson which I want to avoid loading it at page load. Instead I would like to parse on server-side at user request, sending back chunks of this original Topojson to be ploted. So I ...
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D3 adding topojson - no data visible

Yesterday I asked what would be the best method of creating an overlay in a web map that would allow for some interactivity. Create interactive map with no server Thanks to a variety of people who ...
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How do I completely fill polygons with text labels on a per-feature basis?

I would like to create a map of regions, where each region is completely filled with its specific chunks of text. Think a map of Wordles in the shape of regions that are assembled together into a map. ...
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Plot poly-lines between few points in D3+Polymaps

I would like to create polyline on the click of the mouse. I have 4 circles 3 with radius 2 (Lets name it as B,C,D) and 1 with radius 8 (Lets name it as A). Now when I click on the circle A, poly line ...