-
-
Save shearichard/4083682 to your computer and use it in GitHub Desktop.
D3 overlaying grid onto maps (forked from original - changed js src to CDN's)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3.5&sensor=false"></script> | |
| <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/openlayers/2.11/OpenLayers.js"></script> | |
| <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/d3/2.10.0/d3.v2.min.js"></script> | |
| <script type="text/javascript" src="http://code.jquery.com/jquery-1.7.1.js"></script> | |
| <style type="text/css"> | |
| #map, #viz { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| width: 800px; | |
| height: 400px; | |
| } | |
| #map { | |
| z-index: -1; | |
| } | |
| #viz { | |
| z-index: 1; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="main"> | |
| <div id="map" style="border: 1px solid black;"></div> | |
| <div id="viz" style="border: 1px solid black;"></div> | |
| <div id="coords"></div> | |
| </div> | |
| <script type="text/javascript"> | |
| var m = {width: 800, height: 400}, grid = {width: 40, height: 40}; | |
| grid.cols = m.width / grid.width, grid.rows = m.height / grid.height; | |
| var map = new OpenLayers.Map("map"); | |
| map.addLayer(new OpenLayers.Layer.Google( | |
| "Google Physical", | |
| {type: google.maps.MapTypeId.TERRAIN} | |
| )); | |
| map.setCenter(new OpenLayers.LonLat(0, 0).transform( | |
| new OpenLayers.Projection("EPSG:4326"), | |
| new OpenLayers.Projection("EPSG:900913") | |
| ), 5); | |
| var data = []; | |
| for (var r = 0; r < grid.rows; r++) { | |
| for (var c = 0; c < grid.cols; c++) { | |
| data.push([c, r]); | |
| } | |
| } | |
| var sampleSVG = d3.select("#viz") | |
| .append("svg:svg") | |
| .attr("width", m.width) | |
| .attr("height", m.height); | |
| sampleSVG.selectAll("rect") | |
| .data(data) | |
| .enter() | |
| .append("svg:rect") | |
| .style("stroke", "gray") | |
| .style("fill", "none") | |
| .attr("x", function(i) { return i[0] * grid.width; }) | |
| .attr("y", function(i) { return i[1] * grid.height; }) | |
| .attr("height", grid.height) | |
| .attr("width", grid.width) | |
| .attr("pointer-events", "all") | |
| .on("mouseover", function() {d3.select(this).style("fill", "yellow");}) | |
| .on("mouseout", function() {d3.select(this).style("fill", "none");}) | |
| .on("click", function(i) { $("#coords").empty().html( i[1] + " row x " + i[0] + " col")}); | |
| </script> | |
| </body> | |
| </html> | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment