World Map

README.md

(This chart is a part of the d3-charts collection available here.)

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This chart lets you plot countries on a world map, either with a single colour or with a colour gradient mapping to corresponding values. You can see an example of the multicolour version here.

The chart displays the countries who were represented at the Paris rally January 11th 2015.

However, the chart returns an error for the following countries at present:

• Malta
• Bahrain

Usage

Here is an example of the settings for a chart with one colour:

var dataset = "data.csv",
    countryValue = "Country",
    colors = ["#d7191c", "#2b83ba"],

    // Config only for multicolour chart
    multiColor = false,
    dataValue = "",
    min = "",
    max = "",
    useLogScale = false,
    showLegend = false;

Here is an example of the settings for a chart with multiple colours:

var dataset = "data.csv",
    countryValue = "Country Name",
    colors = ["#d7191c", "#2b83ba"],

    // Config only for multicolour chart
    multiColor = true,
    dataValue = "2013", // ""
    min = 0, // ""
    max = 14877, // ""
    useLogScale = true,
    showLegend = false;

• countryValue refers to the header for the column with country names.

The following config variables are only for the multicolour chart only:

• dataValue is for the column with the country values.
• min is the lowest (data) value.
• max is the highest (data) value.
• min is the lowest (data) value.
• useLogScale represents the values logarithmically
• showLegend shows a legend explaining the values. (Work in progress.)

d3.geo.projection.v0.min.js

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data.csv

Country
France
Germany
United Kingdom
Italy
Spain
Romania
Poland
Denmark
Belgium
Netherlands
Greece
Ireland
Portugal
Czech Republic
Slovakia
Latvia
Bulgaria
Hungary
Croatia
Luxembourg
Malta
Slovenia
Sweden
Finland
Ukraine
Switzerland
Kosovo
Albania
Turkey
Norway
Georgia
Russian Federation
Austria
United States
Canada
Israel
Jordan
Palestine
United Arab Emirates
Qatar
Bahrain
Mali
Gabon
Niger
Benin
Tunisia
Algeria

index.html

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    - Scale SVG dynamically/responsively
    - d3.tip

    ISSUE: With D3 book's shape file, Alabama disappears
    ISSUE: With official shape file, Minnesota disappears
-->
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <style>
            svg {
                display: block;
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            .states {
                fill: none;  /** Hides TopoJSON artifacts */
                stroke: #000;
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            // If protrait mode
            } else {
                var width = wrapperWidth,
                    height = Math.round(width / aspectRatio);
            }

            // Local settings
            // ==============
            var dataset = "data.csv",
                geoDataset = "ne_110m_admin_0_countries_lakes.topojson",
                countryValue = "Country",
                colors = ["#d7191c", "#2b83ba"];

            // Display settings - for multicolour chart
            // ================
            var multiColor = false,
                dataValue = "",
                domain = [0, 14877],
                useLogScale = true;

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            // ==================
        if (multiColor === true) {
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                thresholdValuePrefix = "", // "$", "£"
                thresholdValueSuffix = "", // "%", "Patents"
                thresholdProportional = true,
                formatWithZeroes = d3.format(","),
                trimZeroes = true,
                formatValue = function(d) {
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                };
        }

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                padding = 30,
                margin = {
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                "left"   : spacing,
                "right"  : spacing
            };
            margin.hor = margin.left + margin.right;
            margin.ver = margin.top + margin.bottom;

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                .translate([width / 2, height / 2])
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            function render(error, data, json) {
                var errorList = {};
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                if (multiColor === true && useLogScale === true) {
                    newDomain = domain.map(function(el) { return el === 0 ? 0 : Math.log(el); });
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                // =================================
                    // Return list of country objects from JSON using topojson function
                    var countries = topojson.feature(json, json.objects.collection).features;

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                        jsonLength = countries.length;

                    // Data (values) forloop
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                            // If country exists in dataset
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                                // Give it a (multi)colour or `true` to confirm existence in dataset
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                                // Delete detected country from separate country list.
                                // If undetected, the country remains on error list.
                                delete errorList[countryName];
                                break;
                            }
                        }
                    }

                    svg.selectAll("path")
                        .data(countries)
                        .enter()
                        .append("path")
                        .attr({
                            "d"         : path,
                            "class"     : "country",
                            "transform" : "translate(" + 0 + "," + margin.top + ")"
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                                return d.properties.value ? color(d.properties.value) : "#DDD";
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                            }
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                    // Error log
                    // =========
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                    if (errorList.length !== 0) {
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                        console.log(errorList);
                    }

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                // =========
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                        .domain(d3.extent(threshold.domain()))
                        .range([0, (width - margin.hor) / 2]);  // Total key width

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                        .scale(keyX)
                        .orient("bottom")
                        .tickSize(13)
                        .tickValues(function() {
                            return thresholdProportional === true ? threshold.domain() : "TODO";
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                        .tickFormat(function(d, i) {
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                        });

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                            "transform" : "translate(" + margin.left + "," + margin.top + ")"
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                                "z"  : d
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                        .enter()
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                            })
                            .style("fill", function(d) { return d.z; });

                    // Threshold title
                    // ===============
                    if (thresholdProportional === true) {
                        g.call(keyXAxis)
                            .append("text")
                            .attr({
                                "class" : "caption",
                                "y"     : -6
                            })
                            .text(thresholdTitle);
                    }
                }
            }
        </script>
    </body>
</html>

ne_110m_admin_0_countries_lakes.topojson

queue.min.js

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thumbnail.png

topojson.v1.min.js

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