Practice with map locations and labels.
Map labels
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> | |
| <head> | |
| <title>Louisiana drop shadow</title> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| padding: 0; | |
| margin: 0; | |
| } | |
| svg { | |
| background-color: #E8C691; | |
| } | |
| .bold { | |
| font-weight: bold; | |
| } | |
| .parishes { | |
| fill: #FAFAFA; | |
| stroke: #777; | |
| stroke-opacity: 0.5; | |
| stroke-width: 0.5px; | |
| opacity: 0.8; | |
| } | |
| .parish-border { | |
| fill: none; | |
| stroke: #DFDFDF; | |
| } | |
| .state-border { | |
| fill: none; | |
| stroke: #585858; | |
| } | |
| .city-label { | |
| font-weight: 500; | |
| text-transform: uppercase; | |
| text-anchor: middle; | |
| opacity: 0.4; | |
| color: #000; | |
| font-family: arial, helvetica, sans-serif; | |
| font-size: 13px; | |
| } | |
| .map-note-text { | |
| font-size: 15px; | |
| font-weight: 500; | |
| color: #000; | |
| font-family: arial, helvetica, sans-serif; | |
| line-height: 18px; | |
| margin: 0; | |
| } | |
| .state-label { | |
| font-weight: 500; | |
| text-transform: uppercase; | |
| text-anchor: middle; | |
| opacity: 0.3; | |
| color: #000; | |
| font-family: arial, helvetica, sans-serif; | |
| font-size: 24px; | |
| line-height: 28px; | |
| letter-spacing: 0.333em; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 650; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| // Inset map | |
| var map_projection = d3.geo.albers() | |
| .translate([width / 2, height / 2]) | |
| .rotate([91.6, 0]) // Rotate CCW (looking down onto North Pole) | |
| .center([0, 31.2]) | |
| .parallels([29, 33]) | |
| .scale(8000); | |
| var map_path = d3.geo.path() | |
| .projection(map_projection); | |
| d3.json("parishes.json", function(error, data) { | |
| if (error) throw error; | |
| // Draw land | |
| svg.append("g") | |
| .attr("class", "parishes") | |
| .selectAll("path") | |
| .data(topojson.feature(data, data.objects.parishes).features) | |
| .enter().append("path") | |
| .attr("fill", function(d) { | |
| var parish_code_as_int = parseInt(d.properties.parishcode, 10); | |
| if (parish_code_as_int < 30) { | |
| return "#C00"; | |
| } else if (parish_code_as_int >= 30 && parish_code_as_int < 60) { | |
| return "#FDBF4F"; | |
| } else { | |
| return "#FFF"; | |
| } | |
| }) | |
| .attr("d", map_path); | |
| // Draw parish borders | |
| svg.append("path") | |
| .datum(topojson.mesh(data, data.objects.parishes, function(a, b) { return a !== b; })) | |
| .attr("class", "parish-border") | |
| .attr("d", map_path); | |
| // Draw state border | |
| svg.append("path") | |
| .datum(topojson.mesh(data, data.objects.parishes, function(a, b) { return a === b; })) | |
| .attr("class", "state-border") | |
| .attr("d", map_path); | |
| // Draw circle marker | |
| svg.selectAll('.circle-icon') | |
| .data(topojson.feature(data, data.objects.parishes).features) | |
| .enter().append('circle') | |
| .each(function(d) { | |
| if (d.properties.parishname !== 'Caddo' && d.properties.parishname !== 'Lafayette') { | |
| return; | |
| } | |
| d3.select(this) | |
| .attr("r", 4) | |
| .attr("transform", function(d) { return "translate(" + map_path.centroid(d) + ")"; }) | |
| .attr("fill", "none") | |
| .attr("stroke", "black") | |
| .attr("stroke-width", 2); | |
| }) | |
| .filter(function(d) { | |
| return d.properties.parishname !== 'Caddo' && d.properties.parishname !== 'Lafayette'; | |
| }).remove(); // Delete empty circle elements | |
| // Draw parish name | |
| svg.selectAll('.parish-label') | |
| .data(topojson.feature(data, data.objects.parishes).features) | |
| .enter().append('text') | |
| .each(function(d) { | |
| if (d.properties.parishname !== 'Orleans') { | |
| return; | |
| } | |
| d3.select(this) | |
| .attr("transform", function(d) { return "translate(" + map_path.centroid(d) + ")"; }) | |
| // .attr("dx", "-3em") | |
| // .attr("dy", "-0.5em") | |
| .attr("fill", "black") | |
| .style("text-anchor", "end") | |
| .text(function(d) { return d.properties.parishname }); | |
| }) | |
| .filter(function(d) { | |
| return d.properties.parishname !== 'Orleans'; | |
| }).remove(); | |
| // Draw parish text note | |
| svg.selectAll('.parish-note') | |
| .data(topojson.feature(data, data.objects.parishes).features) | |
| .enter().append('text') | |
| .each(function(d) { | |
| if (d.properties.parishname === 'Lafayette') { | |
| d3.select(this) | |
| .attr("transform", function(d) { return "translate(" + map_path.centroid(d) + ")"; }) | |
| .attr("dx", "-150") | |
| .attr("dy", "150") | |
| .attr("fill", "black") | |
| .style("text-anchor", "end") | |
| .text("Welcome to Lafayette."); | |
| } else if (d.properties.parishname === 'Caddo') { | |
| d3.select(this) | |
| .attr("transform", function(d) { return "translate(" + map_path.centroid(d) + ")"; }) | |
| .attr("dx", "10") | |
| .attr("dy", "-90") | |
| .attr("fill", "black") | |
| .attr("id", "caddo-text") | |
| .style("text-anchor", "start") | |
| .text("This is the "); | |
| d3.select(this) | |
| .append("tspan") | |
| .attr("class", "bold") | |
| .text("centroid "); | |
| d3.select(this) | |
| .append("tspan") | |
| .attr("x", "10") | |
| .attr("y", "-75") | |
| .style("text-anchor", "start") | |
| .text("of Caddo Parish."); | |
| } else { | |
| return; | |
| } | |
| }) | |
| .filter(function(d) { | |
| return d.properties.parishname !== 'Caddo' && d.properties.parishname !== 'Lafayette'; | |
| }).remove(); | |
| // Draw line between parish marker and text | |
| // Line path generator | |
| var line = d3.svg.line() | |
| .x(function(d) { return d.x; }) | |
| .y(function(d) { return d.y; }) | |
| .interpolate("basis"); | |
| svg.selectAll(".parish-line") | |
| .data(topojson.feature(data, data.objects.parishes).features) | |
| .enter().append('path') | |
| .attr("class", "parish-line") | |
| .attr("d", function(d) { | |
| var centroid = map_path.centroid(d); | |
| if (d.properties.parishname === 'Lafayette') { | |
| var lineData = [ | |
| {"x": centroid[0] - 4, "y": centroid[1] + 4}, | |
| {"x": centroid[0] - 145, "y": centroid[1] + 145} | |
| ]; | |
| } else if (d.properties.parishname === 'Caddo') { | |
| var lineData = [ | |
| {"x": centroid[0], "y": centroid[1] - 4}, | |
| {"x": centroid[0] + 10, "y": centroid[1] - 72} | |
| ]; | |
| } else { | |
| return; | |
| } | |
| return line(lineData); | |
| }) | |
| .attr("stroke", "black") | |
| .attr("stroke-width", 1) | |
| .attr("opacity", 0.8) | |
| .attr("fill", "#000") | |
| .filter(function(d) { | |
| return d.properties.parishname !== 'Caddo' && d.properties.parishname !== 'Lafayette'; | |
| }).remove(); | |
| // State label | |
| svg.append("text") | |
| .attr("class", "state-label") | |
| .attr("x", width * 0.35) | |
| .attr("y", height * 0.4) | |
| .text('Louisiana'); | |
| }); | |
| // Allows iframe on bl.ocks.org. | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> | |
| </body> | |
| </html> |
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment