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

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5
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1answer
141 views

demers cartogram

How do you make a demers cartogram from a shapefile/topojson/geojson? I have tried scapetoad and indiemapper and i can not duplicate what you find on the links below. ...
5
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1answer
166 views

Moving a shape around the earth while maintaining the proper projection

What is the transformation needed to be taken on every data point of a shape to rotate that shape around the globe. I'm trying to figure out the math behind this kind of transformation so I can ...
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1answer
48 views

Showing link for every city at different zoom levels using Leaflet?

I have a Leaflet map that I am using to render a map of the U.S. The map will have specific zoom levels. For example, when the map first loads it will show major U.S. cities. Then if you zoom in it ...
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1answer
1k views

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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0answers
101 views

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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0answers
111 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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0answers
1k views

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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0answers
409 views

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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0answers
185 views

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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0answers
398 views

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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0answers
52 views

Topojson Rendering Problem

This block has a topojson file that's being rendered such that each polygon fills the world: http://bl.ocks.org/emeeks/6bc43691f631a4097d05 It includes the geojson file that it was derived from, ...
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0answers
76 views

Placing Pins and following transformation on zoom map d3

So I am using this http:// bl.ocks. org/mbostock/4699541 framework on D3.js and I just figured out how to append circles to the map. However when you click on a state the circle moves out of place ...
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0answers
241 views

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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0answers
72 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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0answers
630 views

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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0answers
312 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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0answers
136 views

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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699 views

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 ...