Моя задача - организовать визуализацию временной шкалы.
Я преобразовал в свой случай пример https://bl.ocks.org/mbostock/34f08d5e11952a80609169b7917d4172.
Я пишу в D3js v4. Я должен сделать эффект HOVER как в случае http://bl.ocks.org/wrobstory/7612013,, но он написан в v3.
Я нашел решение https://softeng.oicr.on.ca/jeffrey_burt/2017/01/16/d3-brush/, но остался небольшим недоразумением, вызвав в консоли ошибку: «Uncaught ReferenceError: обертка не определена»
Какой у меня WRAPPERопределить?
Код является рабочим, но в консоли возникает ошибка https://jsfiddle.net/miorita/87fb4kyh/14/
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>QUESTION</title>
<link rel="stylesheet" href="css/normalize.css">
<style>
.zoom {
cursor: move;
fill: none;
pointer-events: all;
}
.TIMELINE {
stroke-width: 20px;
stroke-opacity: 0.5;
}
.TIMELINE2 {
stroke-width: 1px;
stroke-opacity: 0.5;
}
div.tooltip {
position: absolute;
text-align: left;
width: 70px;
height: 28px;
padding: 3px;
font: 11px sans-serif;
background: lightsteelblue;
border: 0px;
border-radius: 3px;
pointer-events: none;
}
</style>
</head>
<body>
<svg width="1200" height="300"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script type="text/javascript">
d3.helper = {};
d3.helper.tooltip = function () {
var tooltipDiv;
var bodyNode = d3.select('body').node();
function tooltip(selection) {
selection.on('mouseover.tooltip', function (pD, pI) {
// Clean up lost tooltips
d3.select('body').selectAll('div.tooltip').remove();
// Append tooltip
tooltipDiv = d3.select('body')
.append('div')
.attr('class', 'tooltip')
var absoluteMousePos = d3.mouse(bodyNode);
tooltipDiv.style({
left: (absoluteMousePos[0] + 10) + 'px',
top: (absoluteMousePos[1] - 40) + 'px',
'background-color': '#d8d5e4',
width: '85px',
height: '30px',
padding: '5px',
position: 'absolute',
'z-index': 1001,
'box-shadow': '0 1px 2px 0 red'
});
var first_line = '<p>Start time: ' + pD.segment_start + '</p>'
var second_line = '<p>End time: ' + pD.segment_end + '</p>'
tooltipDiv.html(first_line + second_line)
})
.on('mousemove.tooltip', function (pD, pI) {
// Move tooltip
var absoluteMousePos = d3.mouse(bodyNode);
tooltipDiv.style({
left: (absoluteMousePos[0] + 10) + 'px',
top: (absoluteMousePos[1] - 40) + 'px'
});
})
.on('mouseout.tooltip', function (pD, pI) {
// Remove tooltip
tooltipDiv.remove();
});
}
tooltip.attr = function (_x) {
if (!arguments.length) return attrs;
attrs = _x;
return this;
};
tooltip.style = function (_x) {
if (!arguments.length) return styles;
styles = _x;
return this;
};
return tooltip;
};
var time_minimum, time_maximum,
dataSource = [
{
"lane_name": "Arnold Schwarzenegger",
"segment_start": "2014-10-06T00:00:00.000Z",
"segment_end": "2014-10-07T00:00:00.000Z",
"flag": false
},
{
"lane_name": "Arnold Schwarzenegger",
"segment_start": "2014-10-07T00:00:00.000Z",
"segment_end": "2014-10-08T00:00:00.000Z",
"flag": true
},
{
"lane_name": "Arnold Schwarzenegger",
"segment_start": "2014-10-08T00:00:00.000Z",
"segment_end": "2014-10-10T00:00:00.000Z",
"flag": false
},
{
"lane_name": "Emmanuelle Rodriguez",
"segment_start": "2014-10-06T00:00:00.000Z",
"segment_end": "2014-10-08T00:00:00.000Z",
"flag": false
},
{
"lane_name": "Emmanuelle Rodriguez",
"segment_start": "2014-10-09T00:00:00.000Z",
"segment_end": "2014-10-10T00:00:00.000Z",
"flag": false
},
{
"lane_name": "Emmanuelle Rodriguez",
"segment_start": "2014-10-10T00:00:00.000Z",
"segment_end": "2014-10-11T00:00:00.000Z",
"flag": true
},
{
"lane_name": "George Wasington",
"segment_start": "2014-10-07T00:00:00.000Z",
"segment_end": "2014-10-09T00:00:00.000Z",
"flag": false
},
{
"lane_name": "George Wasington",
"segment_start": "2014-10-10T00:00:00.000Z",
"segment_end": "2014-10-11T00:00:00.000Z",
"flag": false
}
];
time_minimum = new Date(dataSource[0].segment_start);
time_maximum = new Date(dataSource[0].segment_end);
for (let i = 1; i < dataSource.length; i++) {
// identify TimeLine minimum and maximum
if (time_minimum > new Date(dataSource[i].segment_start)) {
time_minimum = new Date(dataSource[i].segment_start);
};
if (time_maximum < new Date(dataSource[i].segment_end)) {
time_maximum = new Date(dataSource[i].segment_end);
};
};
var svg = d3.select("svg"),
margin = { top: 15, right: 20, bottom: 100, left: 180 },
margin2 = { top: +svg.attr("height") - 80, right: margin.right, bottom: 30, left: margin.left },
svgWidth = +svg.attr("width") - margin.left - margin.right,
svgHeight = +svg.attr("height") - margin.top - margin.bottom,
svgHeight2 = +svg.attr("height") - margin2.top - margin2.bottom;
var x = d3.scaleUtc().range([0, svgWidth]),
x2 = d3.scaleUtc().range([0, svgWidth]),
y = d3.scaleBand().range([0, svgHeight]),
y2 = d3.scaleBand().range([0, svgHeight2]);
var xAxis = d3.axisBottom(x),
xAxis2 = d3.axisBottom(x2),
yAxis = d3.axisLeft(y);
var brush = d3.brushX()
.extent([[0, 0], [svgWidth, svgHeight2]])
.on("end", brushend);
var zoom = d3.zoom()
.scaleExtent([1, Infinity])
.translateExtent([[0, 0], [svgWidth, svgHeight]])
.extent([[0, 0], [svgWidth, svgHeight]])
.on("zoom", zoomed);
svg.append("defs").append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", svgWidth)
.attr("height", svgHeight);
var focus = svg.append("g")
//.attr("class", "focus")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var context = svg.append("g")
//.attr("class", "context")
.attr("transform", "translate(" + margin2.left + "," + margin2.top + ")");
var colorScale = d3.scaleOrdinal(d3.schemeCategory10);
//------------------------------------;
x.domain([time_minimum, time_maximum]);
y.domain(dataSource.map(d => d.lane_name));
x2.domain(x.domain());
y2.domain(y.domain());
focus.selectAll(".TIMELINE")
.data(dataSource)
.enter()
.append("line")
.attr("class", "TIMELINE")
.style("stroke", function (d) {
return colorScale(d.lane_name);
})
.style("clip-path", "url(#clip)")
.attr("x1", function (d) {
return x(new Date(d.segment_start))
})
.attr("y1", function (d) {
let shiftVertical = -20;
if (d.flag) { shiftVertical = 20; };
return y(d.lane_name) + (y.bandwidth() + shiftVertical) / 2
})
.attr("x2", function (d) {
return x(new Date(d.segment_end))
})
.attr("y2", function (d) {
let shiftVertical = -20;
if (d.flag) { shiftVertical = 20; };
return y(d.lane_name) + (y.bandwidth() + shiftVertical) / 2
})
.call(d3.helper.tooltip());
context.selectAll(".TIMELINE2")
.data(dataSource)
.enter()
.append("line")
.attr("class", "TIMELINE2 axis--x")
.style("stroke", "black")
.style("clip-path", "url(#clip)")
.attr("x1", function (d) {
return x(new Date(d.segment_start))
})
.attr("y1", function (d) {
let shiftVertical = -2;
if (d.flag) { shiftVertical = 2; };
return y2(d.lane_name) + (y2.bandwidth() + shiftVertical) / 2
})
.attr("x2", function (d) {
return x(new Date(d.segment_end))
})
.attr("y2", function (d) {
let shiftVertical = -2;
if (d.flag) { shiftVertical = 2; };
return y2(d.lane_name) + (y2.bandwidth() + shiftVertical) / 2
});
focus.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + svgHeight + ")")
.call(xAxis);
focus.append("g")
.attr("class", "axis axis--y")
.call(yAxis);
context.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + svgHeight2 + ")")
.call(xAxis2);
context.append("g")
.attr("class", "brush")
.call(brush)
.call(brush.move, x.range());
svg.append("rect")
.attr("class", "zoom")
.attr("width", svgWidth)
.attr("height", svgHeight)
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
//-----------------------------------------;
function brushend() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom
var s = d3.event.selection || x2.range();
x.domain(s.map(x2.invert, x2));
focus.selectAll(".TIMELINE")
.attr("x1", d => x(new Date(d.segment_start)))
.attr("x2", d => x(new Date(d.segment_end)));
focus.select("g.axis--x").call(xAxis);
svg.select(".zoom").call(zoom.transform, d3.zoomIdentity
.scale(svgWidth / (s[1] - s[0]))
.translate(-s[0], 0));
var selection = d3.event.selection;
if (!selection) return;
// this wrapper ?????
wrapper.select('.brush').call(brush.move, null);
brushed(selection);
}
function brushed(selection) {
// handle selection
x.domain(d3.event.selection);
transition_data();
reset_axis();
}
function transition_data() {
svg.select("svg")
.data(dataSource)
.transition()
.duration(500);
}
function reset_axis() {
svg.transition().duration(500)
.select(".x.axis")
.call(xAxis);
}
function zoomed() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "brush") return; // ignore zoom-by-brush
var t = d3.event.transform;
x.domain(t.rescaleX(x2).domain());
focus.selectAll(".TIMELINE")
.attr("x1", d => x(new Date(d.segment_start)))
.attr("x2", d => x(new Date(d.segment_end)));
focus.select("g.axis--x").call(xAxis);
context.select(".brush").call(brush.move, x.range().map(t.invertX, t));
}
</script>
</body>
</html>