897 | // }
898 |
899 | var groups = groupData(data, this.group);
900 | var variable = this.variable;
901 | var ordering = this.groupOrdering;
902 |
903 | return _.map(_.sortBy(_.pairs(groups), function (p) { return ordering(p[0]); }), function (g) {
904 | var name = g[0];
905 | var values = variable ? _.pluck(g[1], variable) : g[1];
906 | values.sort(d3.ascending);
907 |
908 | var q1 = d3.quantile(values, 0.25);
909 | var median = d3.quantile(values, 0.5);
910 | var q3 = d3.quantile(values, 0.75);
911 | var min = values[0];
912 | var max = values[values.length - 1];
913 |
914 | var fenceRange = 1.5 * (q3 - q1);
915 | var lowerFenceIndex = d3.bisectLeft(values, q1 - fenceRange);
916 | var upperFenceIndex = d3.bisectRight(values, q3 + fenceRange, lowerFenceIndex) - 1;
917 | var lower = values[lowerFenceIndex];
918 | var upper = values[upperFenceIndex];
919 | var outliers = values.slice(0, lowerFenceIndex).concat(values.slice(upperFenceIndex + 1));
920 |
921 | var r = {
922 | group: name,
923 | q1: q1,
924 | median: median,
925 | q3: q3,
926 | lower: lower,
927 | upper: upper,
928 | outliers: outliers,
929 | min: min,
930 | max: max
931 | };
932 | return r;
933 | }, this);
934 | };
935 |
936 | function ArrowStatistic (spec) {
937 | // A function that returns the data point (in data space) the
938 | // arrow should point at.
939 | this.head = spec.head;
940 |
941 | // A function that returns the data point (in data space) the
942 | // arrow should point from.
943 | this.tail = spec.tail;
944 | }
945 |
946 | ArrowStatistic.prototype = new Statistic();
947 |
948 | ArrowStatistic.prototype.compute = function (data) {
949 | return {
950 | head: this.head(data),
951 | tail: this.tail(data)
952 | };
953 | };
954 |
955 | /***
956 | * Returns a grouping of data based on a data set's attribute.
957 | * If groupBy is not defined returns the data nested as a single group.
958 | */
959 | function groupData(data, groupBy) {
960 | return _.isUndefined(groupBy) ? { 'data': data } : _.groupBy(data, groupBy);
961 | }
962 |
963 | function translate(x, y) { return 'translate(' + x + ',' + y + ')'; }
964 |
965 | ////////////////////////////////////////////////////////////////////////
966 | // API
967 |
968 | /*
969 | * Given a spec for a graphic, return a rendering function that
970 | * can render the graphic given data, a DOM element in which to
971 | * render it, and graphics options.
972 | */
973 | exports.gg = function gg () {
974 | var graphic = new Graphic({
975 | facets: _.find(arguments, function (x) { return _.has(x, 'facets'); }),
976 | layers: _.filter(arguments, function (x) { return _.has(x, 'geometry'); }),
977 | scales: _.filter(arguments, function (x) { return _.has(x, 'aesthetic'); })
978 | });
979 | return function (data, where, opts) { graphic.render(data, where, opts); };
980 | };
981 |
982 | })(this);
983 |
--------------------------------------------------------------------------------
/index.html:
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1 |
2 |
3 |
4 | The Grammar of Graphics
6 | The Grammar of Graphics
10 |
11 | See code for these graphics.
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
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/json2.js:
--------------------------------------------------------------------------------
1 | /* json2.js
2 | * 2008-01-17
3 | * Public Domain
4 | * No warranty expressed or implied. Use at your own risk.
5 | * See http://www.JSON.org/js.html
6 | */
7 | (function(){if(!this.JSON){JSON=function(){function f(n){return n<10?'0'+n:n;}Date.prototype.toJSON=function(){return this.getUTCFullYear()+'-'+f(this.getUTCMonth()+1)+'-'+f(this.getUTCDate())+'T'+f(this.getUTCHours())+':'+f(this.getUTCMinutes())+':'+f(this.getUTCSeconds())+'Z';};var m={'\b':'\\b','\t':'\\t','\n':'\\n','\f':'\\f','\r':'\\r','"':'\\"','\\':'\\\\'};function stringify(value,whitelist){var a,i,k,l,r=/["\\\x00-\x1f\x7f-\x9f]/g,v;switch(typeof value){case'string':return r.test(value)?'"'+value.replace(r,function(a){var c=m[a];if(c){return c;}c=a.charCodeAt();return'\\u00'+Math.floor(c/16).toString(16)+(c%16).toString(16);})+'"':'"'+value+'"';case'number':return isFinite(value)?String(value):'null';case'boolean':case'null':return String(value);case'object':if(!value){return'null';}if(typeof value.toJSON==='function'){return stringify(value.toJSON());}a=[];if(typeof value.length==='number'&&!(value.propertyIsEnumerable('length'))){l=value.length;for(i=0;i=0&&o>i;i+=n){var 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