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Adding hover effect in d3 word cloud - javascript

I am using D3 Cloud to build a word cloud (https://github.com/jasondavies/d3-cloud) and I would like to add an hover effect similar to http://www.jasondavies.com/wordcloud.
Here is the sample code. Complete code is at http://plnkr.co/edit/gNtHZ0lMRTP98mptm3W8?p=preview
var sizeScale = d3.scale.linear()
.domain([0, d3.max(frequency_list, function(d) { return d.freq} )]).range([10, 95]);
layout = d3.layout.cloud().size([w, h])
.words(frequency_list)
.padding(5)
.rotate(function() { return ~~(Math.random() * 2) * 90; })
.font("Impact")
.fontSize(function(d) { return sizeScale(d.freq); })
.on("end",draw)
.start();
}
function draw(words) {
var fill = d3.scale.category20();
d3.select(container).remove();
d3.select("body").append(container)
.attr("width", w)
.attr("height", h)
.append("g")
.attr("transform", "translate(" + [w/2, h/2] + ")")
.selectAll("text")
.data(words)
.enter().append("text")
.transition()
.duration(function(d) { return d.time} )
.attr('opacity', 1)
.style("font-size", function(d) { return d.size + "px"; })
.style("font-family", "Impact")
.style("fill", function(d, i) { return fill(i); })
.attr("text-anchor", "middle")
.attr("transform", function(d) {
return "rotate(" + d.rotate + ")";
})
.attr("transform", function(d) {
return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
})
.text(function(d) { return d.text; });
}

On the page you link to, he's using a :hover pseudo-class.
<style>
text:hover { opacity: .7 !important; }
</style>
Updated code here.

Related

I am trying to do three transitions in onClick event of a Pie Chart. The first transition works but the second and the third one fail. I understood from Mike Bostocks comment on a similar question that "This means you are trying to modify a transition that has already started, or derive a transition from one that has ended. Please read the API Reference section on transition life cycles."
I still cant seem to understand the reason why this is happening.
Here is the relevant code:
self.primaryLabelText = self.arc.append("text")
.on("click", function (d: any) {
console.log("About to send::::" + getStudyLabel(d.index));
self.selectedIndustryTypeService.sendMessage(getStudyLabel(d.index));
self.showDialog();
// The amount we need to rotate:
var rotate = 180-(d.startAngle + d.endAngle)/2 / Math.PI * 180;
// Transition the pie chart
g.transition()
.attr("transform", "translate(" + self.width / 2 + "," + self.height / 2 + ") rotate(" + rotate + ")")
.duration(1000);
// Τransition the labels:
self.primaryLabelText.transition()
.attr("transform", function(dd: any) {
return "translate(" + label.centroid(dd) + ") rotate(" + (-rotate) + ")"; })
.duration(1000);
self.secondaryLabelText.transition()
.attr("transform", function(dd: any) {
return "translate(" + label.centroid(dd) + ") rotate(" + (-rotate) + ")"; })
.duration(1000);
})
.transition()
.duration(750)
.attr("transform", function (d: any) {
return "translate(" + label.centroid(d) + ")";
})
.attr("dy", "-0.75em")
.attr("font-family", "sans-serif")
.attr("font-size", "15px")
.attr("text-anchor", "middle")
.attr("class", "sponsor-pie-widget-label")
.text(function (d: any) {
if (d.endAngle - d.startAngle < 0.3) {
return "";
} else {
return getStudyLabel(d.index);
}
});
What is the issue here?

The problem was that the primaryLabel and secondaryLabel I was trying to do transition on were not assigned correctly. I had the following assignment:
self.primaryLabelText = self.arc.append("text")
.on("click", function (d: any) {
self.rotateChart(d);
}).transition()
.duration(750)
.attr("transform", function (d: any) {
return "translate(" + self.label.centroid(d) + ")";
})
.attr("dy", "-0.75em")
.attr("font-family", "sans-serif")
.attr("font-size", "15px")
.attr("text-anchor", "middle")
.attr("class", "sponsor-pie-widget-label")
.text(function (d: any) {
if (d.endAngle - d.startAngle < 0.3) {
return "";
} else {
return getStudyLabel(d.index);
}
});
As a result of this, the variables contained the reference to the transitions and not the labels themselves as when you chain transitions it gets changed to a transition type object. So I changed that to this:
self.primaryLabelText = self.arc.append("text")
.on("click", function (d: any) {
self.rotateChart(d);
});
self.primaryLabelText.transition()
.duration(750)
.attr("transform", function (d: any) {
return "translate(" + self.label.centroid(d) + ")";
})
.attr("dy", "-0.75em")
.attr("font-family", "sans-serif")
.attr("font-size", "15px")
.attr("text-anchor", "middle")
.attr("class", "sponsor-pie-widget-label")
.text(function (d: any) {
if (d.endAngle - d.startAngle < 0.3) {
return "";
} else {
return getStudyLabel(d.index);
}
});
It all works now! :)

I have Done a stacked Bar chart now I am extending the Chart feature as when mouseover on the legend the Respective Bars should highlight.
The Problem I am facing is the mouseover event is working on the Last legend only but but highlighting the every rect layer in chart.
The Problem shown in below fig. This image is when I mouseover on D_Lines Legend Rect
My Code part is
var svg = d3.select("body")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var fData =
[{"orders":"A","Total_Orders":76,"A_Lines":123,"B_Lines":0,"C_Lines":0,"D_Lines":0,"Total_Lines":123,"Total_Units":3267},
{"orders":"B","Total_Orders":68,"A_Lines":0,"B_Lines":107,"C_Lines":0,"D_Lines":0,"Total_Lines":107,"Total_Units":3115},
{"orders":"C","Total_Orders":81,"A_Lines":0,"B_Lines":0,"C_Lines":123,"D_Lines":0,"Total_Lines":123,"Total_Units":3690},
{"orders":"D","Total_Orders":113,"A_Lines":0,"B_Lines":0,"C_Lines":0,"D_Lines":203,"Total_Lines":203,"Total_Units":7863},
{"orders":"AB","Total_Orders":62,"A_Lines":70,"B_Lines":76,"C_Lines":0,"D_Lines":0,"Total_Lines":146,"Total_Units":1739},
{"orders":"AC","Total_Orders":64,"A_Lines":77,"B_Lines":0,"C_Lines":79,"D_Lines":0,"Total_Lines":156,"Total_Units":2027},
{"orders":"AD","Total_Orders":100,"A_Lines":127,"B_Lines":0,"C_Lines":0,"D_Lines":144,"Total_Lines":271,"Total_Units":6467},
{"orders":"BC","Total_Orders":64,"A_Lines":0,"B_Lines":80,"C_Lines":84,"D_Lines":0,"Total_Lines":164,"Total_Units":1845},
{"orders":"BD","Total_Orders":91,"A_Lines":0,"B_Lines":108,"C_Lines":0,"D_Lines":135,"Total_Lines":243,"Total_Units":4061},
{"orders":"CD","Total_Orders":111,"A_Lines":0,"B_Lines":0,"C_Lines":132,"D_Lines":147,"Total_Lines":279,"Total_Units":5011},
{"orders":"ABC","Total_Orders":45,"A_Lines":58,"B_Lines":63,"C_Lines":55,"D_Lines":0,"Total_Lines":176,"Total_Units":1245},
{"orders":"ABD","Total_Orders":69,"A_Lines":105,"B_Lines":87,"C_Lines":0,"D_Lines":116,"Total_Lines":308,"Total_Units":4538},
{"orders":"ACD","Total_Orders":66,"A_Lines":91,"B_Lines":0,"C_Lines":88,"D_Lines":132,"Total_Lines":311,"Total_Units":4446},{
{"orders":"BCD","Total_Orders":68,"A_Lines":0,"B_Lines":84,"C_Lines":95,"D_Lines":111,"Total_Lines":290,"Total_Units":4187},
{"orders":"ABCD","Total_Orders":56,"A_Lines":96,"B_Lines":90,"C_Lines":93,"D_Lines":143,"Total_Lines":422,"Total_Units":6331}]
var headers = ["A_Lines", "B_Lines", "C_Lines", "D_Lines"];
var layers = d3.layout.stack()(headers.map(function (count) {
return fData.map(function (d) {
// alert(d);
return { x: d.ORDER_TYPE, y: +d[count] };
});
}));
//StackedBar Rectangle Max
var yStackMax = d3.max(layers, function (layer) { return d3.max(layer, function (d) { return d.y0 + d.y; }); });
// Set x, y and colors
var xScale = d3.scale.ordinal()
.domain(layers[0].map(function (d) { return d.x; }))
.rangeRoundBands([25, width], .08);
colors = ["#9999CC", "#F7A35C", "#99CC99", "#CCCC99"];
var y = d3.scale.linear()
.domain([0, yStackMax])
.range([height, 0]);
var colorScale = d3.scale.ordinal()
.domain(headers)
.range(colors);
// Define and draw axes
var xAxis = d3.svg.axis()
.scale(xScale)
.tickSize(1)
.tickPadding(6)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(d3.format(".2s"))
var layer = svg.selectAll(".layer")
.data(layers)
.enter().append("g")
.attr("class", "layer")
.style("fill", function (d, i) { return colorScale(i); });
var rect = layer.selectAll("rect")
.data(function (d) { return d; })
.enter().append("rect")
.attr("x", function (d) { return xScale(d.x); })
.attr("y", height)
.attr("width", xScale.rangeBand())
.attr("height", 0)
.attr("class", function (d) {
return "rect bordered " + "color-" + colorScale(d.value).substring(1);
});
debugger;
layer.selectAll("text.rect")
.data(function (layer) { return layer; })
.enter().append("text")
.attr("text-anchor", "middle")
.attr("x", function (d) { return xScale(d.x) + xScale.rangeBand() / 2; })
.attr("y", function (d) { return y(d.y + d.y0) - 3; })
.text(function (d) { return d.y + d.y0; })
.style("fill", "4682b4");
//********** AXES ************
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text").style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", function (d) {
return "rotate(-45)"
});
svg.attr("class", "x axis")
.append("text")
.attr("text-anchor", "end") // this makes it easy to centre the text as the transform is applied to the anchor
.attr("transform", "translate(" + (width / 2) + "," + (height + 60) + ")") // centre below axis
.text("Order Velocity Group");
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(20,0)")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr({ "x": -75, "y": -70 })
.attr("dy", ".75em")
.style("text-anchor", "end")
.text("No. Of Lines");
//********** LEGEND ************
var legend = svg.selectAll(".legend")
.data(headers.slice().reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function (d, i) { return "translate(" + i * (-100) + "," + (height + 50) + ")"; });
debugger;
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", function (d, i) { return colors[i]; })
.on("mouseover", function (d, i) {
svg.selectAll("rect.color-" + colors[i].substring(1)).style("stroke", "blue");
})
.on("mouseout", function (d, i) {
svg.selectAll("rect.color-" + colors[i].substring(1)).style("stroke", "white");
});
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function (d) { return d; });
transitionStacked();
function transitionStacked() {
y.domain([0, yStackMax]);
rect.transition()
.duration(500)
.delay(function (d, i) { return i * 10; })
.attr("y", function (d) { return y(d.y0 + d.y); })
.attr("height", function (d) { return y(d.y0) - y(d.y0 + d.y); })
.transition()
.attr("x", function (d) { return xScale(d.x); })
.attr("width", xScale.rangeBand());
};
}
Can any one help me to overcome this problem.

You are appending the same class : color-9999CC to all your rect elements, so once you hover the last legend item having color : #9999CC all rect element will be selected.
To create the required class properly, you can add the corresponding color info to each element in your layers object while creating it.
I added a color property that has as value the color of the corresponding headers item:
var layers = d3.layout.stack()(
headers.map(function (count) {
return fData.map(function (d,i) {
return { x: d.orders, y: +d[count] , color: colorScale(count)};
/*color = current headers item color */
});
}));
Then while creating your rect items you can add to each element a class by accessing its color property like this:
var rect = layer.selectAll("rect")
.data(function (d) { return d; })
.....
.attr("class", function (d) {
return "rect bordered " + "color-" +d.color.substring(1);
});
complete code:
var margin = {top:10, right: 10, bottom: 80, left: 50},
width =960,
height=650;
var svg = d3.select("body")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var fData =
[{"orders":"A","Total_Orders":76,"A_Lines":123,"B_Lines":0,"C_Lines":0,"D_Lines":0,"Total_Lines":123,"Total_Units":3267},
{"orders":"B","Total_Orders":68,"A_Lines":0,"B_Lines":107,"C_Lines":0,"D_Lines":0,"Total_Lines":107,"Total_Units":3115},
{"orders":"C","Total_Orders":81,"A_Lines":0,"B_Lines":0,"C_Lines":123,"D_Lines":0,"Total_Lines":123,"Total_Units":3690},
{"orders":"D","Total_Orders":113,"A_Lines":0,"B_Lines":0,"C_Lines":0,"D_Lines":203,"Total_Lines":203,"Total_Units":7863},
{"orders":"AB","Total_Orders":62,"A_Lines":70,"B_Lines":76,"C_Lines":0,"D_Lines":0,"Total_Lines":146,"Total_Units":1739},
{"orders":"AC","Total_Orders":64,"A_Lines":77,"B_Lines":0,"C_Lines":79,"D_Lines":0,"Total_Lines":156,"Total_Units":2027},
{"orders":"AD","Total_Orders":100,"A_Lines":127,"B_Lines":0,"C_Lines":0,"D_Lines":144,"Total_Lines":271,"Total_Units":6467},
{"orders":"BC","Total_Orders":64,"A_Lines":0,"B_Lines":80,"C_Lines":84,"D_Lines":0,"Total_Lines":164,"Total_Units":1845},
{"orders":"BD","Total_Orders":91,"A_Lines":0,"B_Lines":108,"C_Lines":0,"D_Lines":135,"Total_Lines":243,"Total_Units":4061},
{"orders":"CD","Total_Orders":111,"A_Lines":0,"B_Lines":0,"C_Lines":132,"D_Lines":147,"Total_Lines":279,"Total_Units":5011},
{"orders":"ABC","Total_Orders":45,"A_Lines":58,"B_Lines":63,"C_Lines":55,"D_Lines":0,"Total_Lines":176,"Total_Units":1245},
{"orders":"ABD","Total_Orders":69,"A_Lines":105,"B_Lines":87,"C_Lines":0,"D_Lines":116,"Total_Lines":308,"Total_Units":4538},
{"orders":"ACD","Total_Orders":66,"A_Lines":91,"B_Lines":0,"C_Lines":88,"D_Lines":132,"Total_Lines":311,"Total_Units":4446},
{"orders":"BCD","Total_Orders":68,"A_Lines":0,"B_Lines":84,"C_Lines":95,"D_Lines":111,"Total_Lines":290,"Total_Units":4187},
{"orders":"ABCD","Total_Orders":56,"A_Lines":96,"B_Lines":90,"C_Lines":93,"D_Lines":143,"Total_Lines":422,"Total_Units":6331}]
var headers = ["A_Lines", "B_Lines", "C_Lines", "D_Lines"];
var colors = ["#9999CC", "#F7A35C", "#99CC99", "#CCCC99"];
var colorScale = d3.scale.ordinal()
.domain(headers)
.range(colors);
var layers = d3.layout.stack()(
headers.map(function (count) {
return fData.map(function (d,i) {
return { x: d.orders, y: +d[count] , color: colorScale(count)};
});
}));
//StackedBar Rectangle Max
var yStackMax = d3.max(layers, function (layer) { return d3.max(layer, function (d) { return d.y0 + d.y; }); });
// Set x, y and colors
var xScale = d3.scale.ordinal()
.domain(layers[0].map(function (d) { return d.x; }))
.rangeRoundBands([25, width], .08);
var y = d3.scale.linear()
.domain([0, yStackMax])
.range([height, 0]);
// Define and draw axes
var xAxis = d3.svg.axis()
.scale(xScale)
.tickSize(1)
.tickPadding(6)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(d3.format(".2s"))
var layer = svg.selectAll(".layer")
.data(layers)
.enter().append("g")
.attr("class", "layer")
.style("fill", function (d, i) { return colorScale(i); });
var rect = layer.selectAll("rect")
.data(function (d) { return d; })
.enter().append("rect")
.attr("x", function (d) { return xScale(d.x); })
.attr("y", height)
.attr("width", xScale.rangeBand())
.attr("height", 0)
.attr("class", function (d,i) {
return "rect bordered " + "color-" +d.color.substring(1);
});
layer.selectAll("text.rect")
.data(function (layer) { return layer; })
.enter().append("text")
.attr("text-anchor", "middle")
.attr("x", function (d) { return xScale(d.x) + xScale.rangeBand() / 2; })
.attr("y", function (d) { return y(d.y + d.y0) - 3; })
.text(function (d) { return d.y + d.y0; })
.style("fill", "4682b4");
//********** AXES ************
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text").style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", function (d) {
return "rotate(-45)"
});
svg.attr("class", "x axis")
.append("text")
.attr("text-anchor", "end") // this makes it easy to centre the text as the transform is applied to the anchor
.attr("transform", "translate(" + (width / 2) + "," + (height + 60) + ")") // centre below axis
.text("Order Velocity Group");
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(20,0)")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr({ "x": -75, "y": -70 })
.attr("dy", ".75em")
.style("text-anchor", "end")
.text("No. Of Lines");
//********** LEGEND ************
var legend = svg.selectAll(".legend")
.data(headers)
.enter().append("g")
.attr("class", "legend")
.attr("transform", function (d, i) { return "translate(" + (headers.length-(i+1))*-100 + "," + (height + 50) + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", function (d, i) { return colors[i]; })
.on("mouseover", function (d, i) {
svg.selectAll("rect.color-" + colors[i].substring(1)).style("stroke", "blue");
})
.on("mouseout", function (d, i) {
svg.selectAll("rect.color-" + colors[i].substring(1)).style("stroke", "white");
});
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function (d) { return d; });
transitionStacked();
function transitionStacked() {
y.domain([0, yStackMax]);
rect.transition()
.duration(500)
.delay(function (d, i) { return i * 10; })
.attr("y", function (d) { return y(d.y0 + d.y); })
.attr("height", function (d) { return y(d.y0) - y(d.y0 + d.y); })
.transition()
.attr("x", function (d) { return xScale(d.x); })
.attr("width", xScale.rangeBand());
};
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.3.0/d3.min.js"></script>
<body></body>

Code Snippet :
We are using d3.js for this.
Sankey diagrams is made up of nodes and links.
Here the data comes from json file.
So how to make all the nodes clickable.
Which methods can we use with the rectangles so that we can make the nodes clickable.
<script>
var margin = {top: 1, right: 1, bottom: 6, left: 1},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var formatNumber = d3.format(",.0f"), //decimal places
format = function(d) { return formatNumber(d) + " TWh"; },
color = d3.scale.category20();
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var sankey = d3.sankey()
.nodeWidth(15)
.nodePadding(10)
.size([width, height]);
var path = sankey.link();
//d3.json("energy.json", function(energy) {
d3.json("numbers-subset.json", function(energy) {
sankey
.nodes(energy.nodes)
.links(energy.links)
.layout(32);
var link = svg.append("g").selectAll(".link")
.data(energy.links)
.enter().append("path")
.attr("class", "link")
.attr("d", path)
.style("stroke-width", function(d) { return Math.max(1, d.dy); })
.sort(function(a, b) { return b.dy - a.dy; });
link.append("title")
.text(function(d) { return d.source.name + " → " + d.target.name + "\n" + format(d.value); });
var node = svg.append("g").selectAll(".node")
.data(energy.nodes)
.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.call(d3.behavior.drag()
.origin(function(d) { return d; })
.on("dragstart", function() { this.parentNode.appendChild(this); })
.on("drag", dragmove));
node.append("rect")
.attr("height", function(d) { return d.dy; })
.attr("width", sankey.nodeWidth())
.style("fill", function(d) { return d.color = color(d.name.split("|")[0]); })
.style("stroke", function(d) { return d3.rgb(d.color).darker(2); })
.append("title")
.text(function(d) { return d.name + "\n" + format(d.value); });
node.append("text")
.attr("x", -6)
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "end")
.attr("transform", null)
.text(function(d) { return d.name; })
.filter(function(d) { return d.x < width / 2; })
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function dragmove(d) {
d3.select(this).attr("transform", "translate(" + d.x + "," + (d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))) + ")");
sankey.relayout();
link.attr("d", path);
}
});
</script>

D3.js is very powerful library give you control over each event to each pixel.
but we need to do one thing in the case of events.
Overlapping event we need to by forget .
Add following code in code.
var node = svg.append("g").selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"; })
.on("click",function(d){
if (d3.event.defaultPrevented) return;
alert("clicked!"+d.value);
})
.call(d3.behavior.drag()
.origin(function(d) { return d; })
.on("dragstart", function() {
this.parentNode.appendChild(this); })
.on("drag", dragmove));

I want to create word tag cloud using d3 .. I found a good example here but the problem that the words go outside the borders especially in case of large fonts and this screenshot for the problem
and here's my code
<script src="../lib/d3/d3.js"></script>
<script src="../d3.layout.cloud.js"></script>
<script>
var fill = d3.scale.category20();
d3.layout.cloud().size([600, 600])
.words([
"Hello", "world", "normally", "you", "want", "more", "words",
"than", "this"
].map(function(d) {
return {
text: d,
size: 10 + Math.random() * 90
};
}))
.padding(5)
.rotate(function() {
return ~~(Math.random() * 2) * 90;
})
.font("Impact")
.fontSize(function(d) {
return d.size;
})
.on("end", draw)
.start();
function draw(words) {
d3.select("body").append("svg")
.attr("width", 700)
.attr("height", 700)
.append("g")
.attr("transform", "translate(150,150)")
.selectAll("text")
.data(words)
.enter().append("text")
.style("font-size", function(d) {
return d.size + "px";
})
.style("font-family", "Impact")
.style("fill", function(d, i) {
return fill(i);
})
.attr("text-anchor", "middle")
.attr("transform", function(d) {
return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
})
.text(function(d) {
return d.text;
});
}
</script>
anyone know a solution for this?

Just change the following line in draw():
.attr("transform", "translate(150,150)")
to:
.attr("transform", "translate(350,350)")
Since your SVG's size is 700x700, you want the g transform to be in the middle of the SVG as the text elements are anchored in the middle.

I would like to force one branch of sankey diagram to be on top.
Instead of diagram like this:
would like to generate diagram where nodes 1, 2, 7, 15, 10 and 14 are always on top:
Link to fiddle with current code: http://jsfiddle.net/w5jfp9t0/1/
var margin = {top: 1, right: 1, bottom: 6, left: 1};
var width = 1052 - margin.left - margin.right;
var height = 500 - margin.top - margin.bottom;
var formatNumber = d3.format(",.0f"),
format = function(d) { return formatNumber(d); },
color = d3.scale.category20();
var svg = d3.select("#chart_sankey").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var sankey = d3.sankey()
.nodeWidth(35)
.nodePadding(10)
.size([width, height]);
var path = sankey.link();
raw = '{"nodes":[{"name":"Node 1"},{"name":"Node 2"},{"name":"Node 3"},{"name":"Node 4"},{"name":"Node 5"},{"name":"Node 6"},{"name":"Node 7"},{"name":"Node 8"},{"name":"Node 9"},{"name":"Node 10"},{"name":"Node 11"},{"name":"Node 12"},{"name":"Node 13"},{"name":"Node 14"},{"name":"Node 15"}],"links":[{"source":9,"target":13,"value":25},{"source":14,"target":9,"value":37},{"source":14,"target":11,"value":16},{"source":14,"target":12,"value":8},{"source":14,"target":10,"value":68},{"source":6,"target":14,"value":154},{"source":6,"target":8,"value":40},{"source":1,"target":6,"value":345},{"source":1,"target":7,"value":66},{"source":1,"target":3,"value":17},{"source":1,"target":4,"value":25},{"source":1,"target":5,"value":117},{"source":0,"target":1,"value":692},{"source":0,"target":2,"value":19}]}';
data = JSON.parse(raw);
sankey.nodes(data.nodes)
.links(data.links)
.layout(32);
var link = svg.append("g")
.selectAll(".link")
.data(data.links)
.enter().append("path")
.attr("class", "link")
.attr("d", path)
.style("stroke-width", function(d) { return Math.max(1, d.dy); })
.sort(function(a, b) { return b.dy - a.dy; });
var nodes = data.nodes;
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"; })
.call(d3.behavior.drag()
.origin(function(d) { return d; })
.on("dragstart", function() { this.parentNode.appendChild(this); })
.on("drag", dragmove));
sankey.relayout();
node.filter(function(d) { return d.value != 0; }) // append text only if node value is not zero
.append("rect")
.attr("height", function(d) { return d.dy; })
.attr("width", sankey.nodeWidth())
.style("fill", function(d) { return d.color = color(d.name.replace(/ .*/, "")); })
.style("stroke", function(d) { return d3.rgb(d.color).darker(2); })
.append("title")
.text(function(d) { return d.name + "\n" + format(d.value); });
node.filter(function(d) { return d.value != 0; }) // append text only if node value is not zero
.append("text")
.attr("x", -6)
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "end")
.attr("transform", null)
.text(function(d) { return d.name; })
.filter(function(d) { return d.x == 0; }) // at first column append text after column
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function dragmove(d) {
d3.select(this).attr("transform", "translate(" + d.x + "," + (d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))) + ")");
sankey.relayout();
link.attr("d", path);
}
What do I need to change to accomplish this?

Note
To be honest, I never used that plugin. I don't see an option to get the desired behaviour directly - thus I looked at the source of sankey.js to make the adjustments. Below I show how I'd modify - you might want to do it more thoroughly :)
Idea
Looking at the code of sankey.js, you see that the nodes are placed (y-direction) using the center function:
function center(node) {
return node.y + node.dy / 2;
}
As I don't see a parameter to change that behaviour, you can change it to:
function center(node) {
return 0;
}
If you then also revert the sorting order:
function ascendingDepth(a, b) {
return b.y - a.y;
}
you get the following picture: