D3.js geoKavrayskiy7() Function
Last Updated :
23 Sep, 2020
The geoKavrayskiy7() function in d3.js is used to draw the Kavrayskiy VII pseudocylindrical projection from the given geojson data.
Syntax:
d3.geoKavrayskiy7()
Parameters: This method does not accept any parameters.
Returns: This method returns the Kavrayskiy7 projection.
Example 1: The following example draws the Kavrayskiy7 projection of world with the center at (0, 0) and rotation of 0 degrees.
HTML
<!DOCTYPE html>
< html >
< head >
</ script >
< script src =
</ script >
</ head >
< body >
< div style = "width:700px; height:500px;" >
< center >
< h3 style = "color:black" ></ h3 >
</ center >
< svg width = "600" height = "450" >
</ svg >
</ div >
< script >
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
// Kavrayskiy7 projection with
// the center at (0, 0) and rotation
// of 0 degrees
var gfg = d3.geoKavrayskiy7()
.scale(width / 1.5 / Math.PI)
.rotate([0, 0])
.center([0, 0])
.translate([width / 2, height / 2])
// Loading the json data
"janasayantan/datageojson/master/" +
"world.json",
function (data) {
// Drawing the map
svg.append("g")
.selectAll("path")
.data(data.features)
.enter().append("path")
.attr("fill", "SaddleBrown")
.attr("d", d3.geoPath()
.projection(gfg)
)
.style("stroke", "#ffff")
});
</ script >
</ body >
</ html >
|
Output:
Example 2: The following example draws the Kavrayskiy7 projection of the world with the center at (-10, 0) and a rotation of 90 degrees with respect to the y-axis.
HTML
<!DOCTYPE html>
< html >
< head >
</ script >
< script src =
</ script >
</ head >
< body >
< div style = "width:700px; height:600px;" >
< center >
< h3 style = "color:black" ></ h3 >
</ center >
< svg width = "500" height = "450" >
</ svg >
</ div >
< script >
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
// Kavrayskiy7 projection with the
// center at (0,0) and rotation of
// 90 degrees with respect to the y-axis
var gfg = d3.geoKavrayskiy7()
.scale(width / 1.8 / Math.PI)
.rotate([90, 0])
.center([-10, 0])
.translate([width / 2, height / 2]);
// Loading the json data
"janasayantan/datageojson/master/" +
"world.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:
Share your thoughts in the comments
Please Login to comment...