The geoBerghaus() function in d3.js is used to draw the Berghaus Dinomic projection from the given geojson data. This is a star-shaped azimuthal world map projection that is not conformal or of equal area. The default number of lobes in the star shape used is 5 and may be changed if required.
Syntax:
d3.geoBerghaus()
Parameters: This method does not accept any parameters.
Returns: This method returns the Berghaus projection.
Example: The following example makes the Berghaus projection of the world.
HTML
<!DOCTYPE html> <html> <head> </script> <script src= </script> </head> <body> <div style="width:800px; height:600px;"> <center> <h3 style="color:red"> Berghaus Projection of World </h3> </center> <svg width="700" height="550"> </svg> </div> <script> var svg = d3.select("svg"), width = +svg.attr("width"), height = +svg.attr("height"); // Berghaus projection var gfg = d3.geoBerghaus() .scale(width / 1.5 / Math.PI) .translate([width / 2, height / 2]) // Loading the geojson data d3.json("https://raw.githubusercontent.com/" + "janasayantan/datageojson/master/" + "geoworld%20.json", function (data) { // Draw the map svg.append("g") .selectAll("path") .data(data.features) .enter().append("path") .attr("fill", "grey") .attr("d", d3.geoPath() .projection(gfg) ) .style("stroke", "#ffff") }); </script> </body> </html> |
Output:
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