Comment faire pour que l'axe des x de ma ligne soit basé sur la date dans d3.js ?
J'essaie de me former à l'utilisation de d3.js. J'ai regardé les exemples qui l'accompagnent et j'ai essayé de recréer le graphique linéaire en utilisant des données fournies par json. Je parviens à introduire les données dans le graphique linéaire, mais l'axe des x est censé être une date et non un nombre. Le format de date que j'utilise est MM/JJ/AA, mais le graphique trace tout à 0. Mes données json arrivent bien, mais j'ai du mal à trouver comment tracer les coordonnées x. Ceci est tiré directement du fichier line.js qui se trouve dans le dossier d3.js examples lorsqu'il est téléchargé. La partie date ne fait pas l'affaire. J'espère que quelqu'un pourra m'indiquer un exemple ou m'expliquer comment le faire fonctionner.
d3.json('jsonChartData.action',
function (data) {
console.log(data);
var w = 450,
h = 275,
p = 30,
x = d3.scale.linear().domain([0, 100]).range([0, w]),
y = d3.scale.linear().domain([0, 100]).range([h, 0]);
var vis = d3.select("body")
.data([data])
.append("svg:svg")
.attr("width", w + p * 2)
.attr("height", h + p * 2)
.append("svg:g")
.attr("transform", "translate(" + p + "," + p + ")");
var rules = vis.selectAll("g.rule")
.data(x.ticks(5))
.enter().append("svg:g")
.attr("class", "rule");
rules.append("svg:line")
.attr("x1", x)
.attr("x2", x)
.attr("y1", 0)
.attr("y2", h - 1);
rules.append("svg:line")
.attr("class", function(d) { return d ? null : "axis"; })
.attr("y1", y)
.attr("y2", y)
.attr("x1", 0)
.attr("x2", w + 1);
rules.append("svg:text")
.attr("x", x)
.attr("y", h + 3)
.attr("dy", ".71em")
.attr("text-anchor", "middle")
.text(x.tickFormat(10));
rules.append("svg:text")
.attr("y", y)
.attr("x", -3)
.attr("dy", ".35em")
.attr("text-anchor", "end")
.text(y.tickFormat(10));
vis.append("svg:path")
.attr("class", "line")
.attr("d", d3.svg.line()
.x(function(d) { return x(d3.time.days(new Date(d.jsonDate))); })
.y(function(d) { return y(d.jsonHitCount); }));
vis.selectAll("circle.line")
.data(data)
.enter().append("svg:circle")
.attr("class", "line")
.attr("cx", function(d) { return x(d3.time.days(new Date(d.jsonDate))); })
.attr("cy", function(d) { return y(d.jsonHitCount); })
.attr("r", 3.5);
});
JSON tel qu'imprimé par mon action :
[{"jsonDate":"09\/22\/11","jsonHitCount":2,"seriesKey":"Website Usage"},`{"jsonDate":"09\/26\/11","jsonHitCount":9,"seriesKey":"Website Usage"},{"jsonDate":"09\/27\/11","jsonHitCount":9,"seriesKey":"Website Usage"},{"jsonDate":"09\/29\/11","jsonHitCount":26,"seriesKey":"Website Usage"},{"jsonDate":"09\/30\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/03\/11","jsonHitCount":3,"seriesKey":"Website Usage"},{"jsonDate":"10\/06\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/11\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/12\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/13\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"10\/14\/11","jsonHitCount":5,"seriesKey":"Website Usage"},{"jsonDate":"10\/17\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/18\/11","jsonHitCount":6,"seriesKey":"Website Usage"},{"jsonDate":"10\/19\/11","jsonHitCount":8,"seriesKey":"Website Usage"},{"jsonDate":"10\/20\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"10\/21\/11","jsonHitCount":4,"seriesKey":"Website Usage"},{"jsonDate":"10\/24\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"10\/25\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"10\/27\/11","jsonHitCount":3,"seriesKey":"Website Usage"},{"jsonDate":"11\/01\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"11\/02\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"11\/03\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"11\/04\/11","jsonHitCount":37,"seriesKey":"Website Usage"},{"jsonDate":"11\/08\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"11\/10\/11","jsonHitCount":39,"seriesKey":"Website Usage"},{"jsonDate":"11\/11\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"11\/14\/11","jsonHitCount":15,"seriesKey":"Website Usage"},{"jsonDate":"11\/15\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"11\/16\/11","jsonHitCount":5,"seriesKey":"Website Usage"},{"jsonDate":"11\/17\/11","jsonHitCount":4,"seriesKey":"Website Usage"},{"jsonDate":"11\/21\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"11\/22\/11","jsonHitCount":3,"seriesKey":"Website Usage"},{"jsonDate":"11\/23\/11","jsonHitCount":11,"seriesKey":"Website Usage"},{"jsonDate":"11\/24\/11","jsonHitCount":2,"seriesKey":"Website Usage"},{"jsonDate":"11\/25\/11","jsonHitCount":1,"seriesKey":"Website Usage"},{"jsonDate":"11\/28\/11","jsonHitCount":10,"seriesKey":"Website Usage"},{"jsonDate":"11\/29\/11","jsonHitCount":3,"seriesKey":"Website Usage"}]`