我在 flot ( http://www.flotcharts.org/flot/examples/series-toggle/index.html ) 上关注这个例子,将这个概念应用到 D3.js 上。
我的数据如下所示:
[ { "sourceA" : 28, "sourceB": 25, "sourceC": 20, "date": "29-Apr-13",
"sourceA" : 15, "sourceB": 23, "sourceC": 54, "date": "29-May-13",
"sourceA" : 23, "sourceB": 43, "sourceC": 23, "date": "29-Jun-13",
}]
我按照上面示例的源代码设置了复选框(“sourceA”、“sourceB”等)。但是,我不知道如何使用“plotAccordingToChoices”函数来操作数据。
即,如果选中了 sourceA 复选框,则该函数应将数据更改为:
[ { "sourceA" : 28, "date": "29-Apr-13",
"sourceA" : 15, "date": "29-May-13",
"sourceA" : 23, "date": "29-Jun-13",
}]
示例中的示例代码 - http://www.flotcharts.org/flot/examples/series-toggle/index.html
// insert checkboxes
var choiceContainer = $("#choices");
$.each(datasets, function(key, val) {
choiceContainer.append("<br/><input type='checkbox' name='" + key +
"' checked='checked' id='id" + key + "'></input>" +
"<label for='id" + key + "'>"
+ val.label + "</label>");
});
choiceContainer.find("input").click(plotAccordingToChoices);
function plotAccordingToChoices() {
var data = [];
choiceContainer.find("input:checked").each(function () {
var key = $(this).attr("name");
if (key && datasets[key]) {
data.push(datasets[key]);
}
});
if (data.length > 0) {
$.plot("#placeholder", data, {
yaxis: {
min: 0
},
xaxis: {
tickDecimals: 0
}
});
}
}
plotAccordingToChoices();