如何解决D3 Sankey链接缩放问题
我需要绘制一个sankey图表以显示关联。我已经使用d3.scaleLinear()缩放了节点,也使小节点具有了含义,但是链接并未按节点进行缩放。我也尝试过链接缩放,但是它不起作用。
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear()
.domain([minVal_node,maxVal_node])
.range([10,120]);
d3.sankey = function() {
var sankey = {},nodeWidth = 24,nodePadding = 8,size = [1,1],nodes = [],links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,x1 = d.target.x,xi = d3.interpolateNumber(x0,x1),x2 = xi(curvature),x3 = xi(1 - curvature),y0 = d.source.y + d.sy + d.dy / 2,y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also,if the source and target are not objects,assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks,value),d3.sum(node.targetLinks,value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero,while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,nextNodes,x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks,function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth,function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes,value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node,i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes,breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks,weightedSource) / d3.sum(node.targetLinks,value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks,weightedTarget) / d3.sum(node.sourceLinks,value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,dy,y0 = 0,n = nodes.length,i;
// Push any overlapping nodes down.
nodes.sort(function(a,b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds,push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a,b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a,b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a,b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,"target": 6,"productIdx": "8350","qty": 27200,"mv": 3054016,"matrixCost": 300,"sourceNodeName": "G","targetNodeName": "L","value": 27200
},{
"source": 7,"target": 11,"qty": 196599,"mv": 22074135.72,"matrixCost": 5000,"targetNodeName": "K","value": 196599
},{
"source": 9,"qty": 113401,"mv": 12732664.28,"matrixCost": 5020,"sourceNodeName": "I","value": 113401
},{
"source": 2,"target": 10,"qty": 0,"mv": 0,"matrixCost": 100015,"sourceNodeName": "C","targetNodeName": "J","value": 0
},{
"source": 0,"qty": 2500000,"mv": 280700000,"matrixCost": 100033,"sourceNodeName": "A","value": 2500000
},"target": 5,"matrixCost": 240048,"targetNodeName": "F","target": 3,"qty": 1309599,"mv": 147041775.72,"targetNodeName": "D","value": 1309599
},"qty": 3250408,"mv": 364955810.24,"value": 3250408
},{
"source": 8,"target": 1,"sourceNodeName": "H","targetNodeName": "B",{
"source": 4,"qty": 10,"mv": 1122.8,"sourceNodeName": "E","value": 10
}]
var nodes = [{
"nodeId": 0,"nodeName": "A","entityCd": "16G"
},{
"nodeId": 1,"nodeName": "B","entityCd": "161"
},{
"nodeId": 2,"nodeName": "C",{
"nodeId": 3,"nodeName": "D","entityCd": "XX"
},{
"nodeId": 4,"nodeName": "E",{
"nodeId": 5,"nodeName": "F",{
"nodeId": 6,"nodeName": "L","entityCd": "16G","bucketCd": "LoantoCoverdublinPBCustShort","bucketName": "Loan to Cover dublin PB Cust Short","bucketType": "U"
},{
"nodeId": 7,"nodeName": "G",{
"nodeId": 8,"nodeName": "H",{
"nodeId": 9,"nodeName": "I",{
"nodeId": 10,"nodeName": "J",{
"nodeId": 11,"nodeName": "K","entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"),// zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),width = +svg.attr("width"),height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1,height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility","hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class","tooltip-sankey")
.style("position","absolute")
.style("z-index","10")
.style("visibility","hidden");
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear().domain([minVal_node,maxVal_node])
.range([10,120]);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class","link-sankey")
.attr("d",path)
.style('stroke',function(d) {
return d.color;
}).style("stroke-width",function(d) {
return Math.max(1,d.dy)
})
.sort(function(a,b) {
return b.dy - a.dy;
})
.on("mouSEOver",function(d) {
var sourceId,targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity",1).style("fill","#1f77b4");
target.style("stroke-opacity","#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility","visible");
})
.on("mousemove",function() {
var tooltipwidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipwidth) return tooltip.style("top",(d3.event.pageY - 10) + "px").style("left",(d3.event.pageX - tooltipwidth) + "px");
return tooltip.style("top",(d3.event.pageX + 10) + "px");
})
.on("mouSEOut",targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility","hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click",showConnections)
.on("mouSEOver",function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility",function() {
return tooltip.style("visibility","hidden");
})
.attr("class","node")
.attr("transform",function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click",showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height",function(d) {
return nodeScale(d.value);
})
.attr("width",sankey.nodeWidth())
.style("fill",function() {
return "#605f66"
})
.style("stroke",function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click",showConnections)
// add in the title for the nodes
node.append("text")
.attr("x",-6)
.attr("y",function(d) {
return nodeScale(d.value) / 2
})
.attr("dy",".15em")
.attr("text-anchor","end")
//.style("font-size","10px")
.attr("transform",null)
.attr("class","nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x",6 + sankey.nodeWidth())
.attr("text-anchor","start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected",true);
d3.select(this).style("stroke","black")
.style("stroke-opacity",0.2);
//If this link is connected to the node
link.style("stroke-opacity",function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected",false);
d3.select(this).style("stroke",0.2)
link.style("stroke-opacity",function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>
此外,小节点有点重叠,之间没有任何间隔。
谢谢。
解决方法
您似乎一直在困惑d3的不同部分,而没有足够仔细地查看d3-sankey的文档。它已经内置了一切,可以根据节点的值缩放节点。 d3.scaleLinear
用于沿轴的图表,而Sankey是完全不同的野兽。
根据您提供的代码(在--- our code ---
之前),我发现每个节点都有一个属性dx
表示宽度,dy
表示高度。使用它们可以彻底解决问题。
编辑:我已经通过转换每个链接的值来更新答案。通过使用Math.sqrt()
并添加baseWidth,我给了较小的数量比较大的数量更多的功率。这意味着链接的宽度将不再对其值进行直接读取,但是由于它仍然大于比例,因此没关系。请注意,现在即使最小的节点也具有一定的宽度。
d3.sankey = function() {
var sankey = {},nodeWidth = 24,nodePadding = 8,size = [1,1],nodes = [],links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,x1 = d.target.x,xi = d3.interpolateNumber(x0,x1),x2 = xi(curvature),x3 = xi(1 - curvature),y0 = d.source.y + d.sy + d.dy / 2,y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also,if the source and target are not objects,assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks,value),d3.sum(node.targetLinks,value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero,while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,nextNodes,x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks,function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth,function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes,value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node,i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes,breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks,weightedSource) / d3.sum(node.targetLinks,value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks,weightedTarget) / d3.sum(node.sourceLinks,value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,dy,y0 = 0,n = nodes.length,i;
// Push any overlapping nodes down.
nodes.sort(function(a,b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds,push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a,b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a,b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a,b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,"target": 6,"productIdx": "8350","qty": 27200,"mv": 3054016,"matrixCost": 300,"sourceNodeName": "G","targetNodeName": "L","value": 27200
},{
"source": 7,"target": 11,"qty": 196599,"mv": 22074135.72,"matrixCost": 5000,"targetNodeName": "K","value": 196599
},{
"source": 9,"qty": 113401,"mv": 12732664.28,"matrixCost": 5020,"sourceNodeName": "I","value": 113401
},{
"source": 2,"target": 10,"qty": 0,"mv": 0,"matrixCost": 100015,"sourceNodeName": "C","targetNodeName": "J","value": 0
},{
"source": 0,"qty": 2500000,"mv": 280700000,"matrixCost": 100033,"sourceNodeName": "A","value": 2500000
},"target": 5,"matrixCost": 240048,"targetNodeName": "F","target": 3,"qty": 1309599,"mv": 147041775.72,"targetNodeName": "D","value": 1309599
},"qty": 3250408,"mv": 364955810.24,"value": 3250408
},{
"source": 8,"target": 1,"sourceNodeName": "H","targetNodeName": "B",{
"source": 4,"qty": 10,"mv": 1122.8,"sourceNodeName": "E","value": 10
}]
var nodes = [{
"nodeId": 0,"nodeName": "A","entityCd": "16G"
},{
"nodeId": 1,"nodeName": "B","entityCd": "161"
},{
"nodeId": 2,"nodeName": "C",{
"nodeId": 3,"nodeName": "D","entityCd": "XX"
},{
"nodeId": 4,"nodeName": "E",{
"nodeId": 5,"nodeName": "F",{
"nodeId": 6,"nodeName": "L","entityCd": "16G","bucketCd": "LoantoCoverDublinPBCustShort","bucketName": "Loan to Cover Dublin PB Cust Short","bucketType": "U"
},{
"nodeId": 7,"nodeName": "G",{
"nodeId": 8,"nodeName": "H",{
"nodeId": 9,"nodeName": "I",{
"nodeId": 10,"nodeName": "J",{
"nodeId": 11,"nodeName": "K","entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"),// zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),width = +svg.attr("width"),height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1,height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility","hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class","tooltip-sankey")
.style("position","absolute")
.style("z-index","10")
.style("visibility","hidden");
// Transform the data so even nodes with small links always have something to show for it.
var baseWeight = 50
linkData.forEach(function(link) {
link.value = baseWeight + Math.sqrt(link.qty);
});
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class","link-sankey")
.attr("d",path)
.style('stroke',function(d) {
return d.color;
}).style("stroke-width",function(d) {
return Math.max(1,d.dy)
})
.sort(function(a,b) {
return b.dy - a.dy;
})
.on("mouseover",function(d) {
var sourceId,targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity",1).style("fill","#1f77b4");
target.style("stroke-opacity","#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility","visible");
})
.on("mousemove",function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top",(d3.event.pageY - 10) + "px").style("left",(d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top",(d3.event.pageX + 10) + "px");
})
.on("mouseout",targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility","hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click",showConnections)
.on("mouseover",function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility",function() {
return tooltip.style("visibility","hidden");
})
.attr("class","node")
.attr("transform",function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click",showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height",function(d) { return d.dy; })
.attr("width",function(d) { return d.dx; })
.style("fill","#605f66")
.style("stroke",function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click",showConnections)
// add in the title for the nodes
node.append("text")
.attr("x",-6)
.attr("y",function(d) { return d.dy / 2; })
.attr("dy",".15em")
.attr("text-anchor","end")
//.style("font-size","10px")
.attr("transform",null)
.attr("class","nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x",6 + sankey.nodeWidth())
.attr("text-anchor","start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected",true);
d3.select(this).style("stroke","black")
.style("stroke-opacity",0.2);
//If this link is connected to the node
link.style("stroke-opacity",function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected",false);
d3.select(this).style("stroke",0.2)
link.style("stroke-opacity",function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>
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