少し遅くなりましたが、参加ポイントが必要です.. :)
シンプルなハンドル クリック マウスとイベントでの関数呼び出しについては、d3.js のシンプルな関数にリンクするための完全なファイルを提供します。
<script src="js/file.js"></script>
そして、含める「THE」ファイル(主に「オン」について分析します):
$(function() {
// Handler for .ready() called.
var data = [],
width = 300,
height = 300,
// An array to hold the coordinates
// of the line drawn on each svg.
coords = [],
line = d3.svg.line(),
// Set the behavior for each part
// of the drag.
drag = d3.behavior.drag()
.on("dragstart", function() {
// Empty the coords array.
coords = [];
svg = d3.select(this);
// If a selection line already exists,
// remove it.
//svg.select(".selection").remove();
// Add a new selection line.
svg.append("path").attr({"class": "selection"});
})
.on("drag", function() {
// Store the mouse's current position
coords.push(d3.mouse(this));
svg = d3.select(this);
// Change the path of the selection line
// to represent the area where the mouse
// has been dragged.
svg.select(".selection").attr({
d: line(coords)
});
// Figure out which dots are inside the
// drawn path and highlight them.
selected = [];
svg.selectAll("circle.dot").each(function(d, i) {
point = [d3.select(this).attr("cx"), d3.select(this).attr("cy")];
if (pointInPolygon(point, coords)) {
selected.push(d.id);
}
});
highlight(selected);
})
.on("dragend", function() {
svg = d3.select(this);
// If the user clicks without having
// drawn a path, remove any paths
// that were drawn previously.
if (coords.length === 0) {
// d3.selectAll("svg path").remove();
unhighlight();
return;
}
// Draw a path between the first point
// and the last point, to close the path.
svg.append("line").attr({
"class": "terminator",
d: line([coords[0], coords[coords.length-1]])
});
});
function randomPoint() {
return Math.floor(Math.random()*(width-30)) + 20;
}
// from https://github.com/substack/point-in-polygon
function pointInPolygon (point, vs) {
var xi, xj, i, intersect,
x = point[0],
y = point[1],
inside = false;
for (var i = 0, j = vs.length - 1; i < vs.length; j = i++) {
xi = vs[i][0],
yi = vs[i][1],
xj = vs[j][0],
yj = vs[j][1],
intersect = ((yi > y) != (yj > y))
&& (x < (xj - xi) * (y - yi) / (yj - yi) + xi);
if (intersect) inside = !inside;
}
return inside;
}
function unhighlight() {
d3.selectAll("circle.dot").classed("highlighted", false);
}
function highlight(ids) {
// First unhighlight all the circles.
unhighlight();
// Find the circles that have an id
// in the array of ids given, and
// highlight those.
d3.selectAll("circle.dot").filter(function(d, i) {
return ids.indexOf(d.id) > -1;
})
.classed("highlighted", true);
}
function Scatter(data, selector, group) {
var svg = d3.select(selector).append("svg")
.attr({
width: width,
height: height
}).call(drag),
g = svg.append("g").attr({"class": "g-dot"}),
// Create a circle element for each
// item in the data passed.
dot = g.selectAll("circle.dot")
.data(data)
.enter().append("circle")
.attr({
"class": "dot",
r: 8,
cx: function(d, i) {
return d[group].x;
},
cy: function(d, i) {
return d[group].y;
},
})
.on("mouseover", function(d, i) {
// Highlight circles on mouseover, but
// only if a path hasn't been drawn.
if (d3.selectAll("svg path").empty()) {
highlight([d.id]);
}
})
.on("mouseout", function(d, i) {
// If a path hasn't been drawn,
// unhighlight the highlighted circles.
if (d3.selectAll("svg path").empty()) {
unhighlight();
}
});
text = g.selectAll("text")
.data(data)
.enter().append("text")
.attr({
x: function(d, i) {
return d[group].x;
},
y: function(d, i) {
return d[group].y + 4;
}
})
.text(function(d, i) {
return d.id;
});
}
// Add the dots to each canvas div.
Scatter(data, "#tableau_principal", "a");
Scatter(data, "#canvas2", "b");
Scatter(data, "#canvas3", "c");
}); // // FIN DOC READY //
// functions generales used partt //