这里使用D3来构建可折叠树形图，但是由于数据繁重，节点及其相应的文本是重叠的，即在垂直视图上，我尝试了很少的东西但是无法获得所需的结果。如果我能从这里得到一些帮助，那将是很好的，这样我就可以避免图表中文本和节点的重叠。
以下是我所面临的实际问题的截图。 image here
在额外的帮助下，我将包括我的codepen链接。 https://codepen.io/hari2609/pen/YxdYwx
这是代码
D3.js
function demoCallFirst(ele, isRedraw) {
/*Conversion Part Starts*/
console.log("perMapData--", isRedraw);
/*Conversion Part Ends*/
/*start*/
var obj = JSON.parse(ele);
var treeData = [obj];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 260
},
width = 16000 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.separation(function(a, b) {
return ((a.parent == root) && (b.parent == root)) ? 3 : 1;
})
.size([height, width - 160]);
var diagonal = d3.svg.diagonal()
.projection(function(d) {
return [d.y, d.x];
});
// Define the div for the tooltip
var div = d3.select(".tree").append("div")
.attr("class", "tooltip")
.attr('id', 'container')
.style("opacity", 0);
var svg = d3.select(".tree").append("svg")
.style("padding-top", "4em")
.attr("width", width + margin.right + margin.left)
//.attr("preserveAspectRatio","none")
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr('id', 'sky')
.attr("transform", "translate(" + margin.left + "," +
margin.top + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
// Collapse after the second level
if (!isRedraw)
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
console.log('check child------>', d.children);
if (d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 300
});
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + source.y0 + "," +
source.x0 +
")";
})
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function(d) {
return d.nodalColor;
});
nodeEnter.append("text")
.attr("x", function(d) {
return d.children || d._children ? -13 : 13;
})
.attr("dy", ".1em")
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" :
"start";
})
.text(function(d) {
return d.name;
})
.style("fill", function(d) {
return d.type;
})
.call(wrap, 400)
.style("fill", function(d) {
return d.color;
})
/*if(obj.children.name = 'Capabilities' || 'Offerings' || 'Processes'){
.style("fill", function(d) { return d._children ? "royalblue" : "#000000";})
}*/
/*Logic for displaying no.of children for a parent*/
/*nodeEnter.append('text')
.attr("dy", ".35em")
.attr("x", function(d) {
return d.children || d._children ? 4 : -4;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" :
"start";
})
.text(function(d) {
var children = d.children || d._children;
return children ? children.length : null;
})*/
/*Logic for displaying no.of children for a parent ends*/
.on("mouseover", function(d) {
div.transition()
.duration(200)
.style("opacity", 0.8);
div.html(d.name + "</br>")
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 38) +
"px")
})
.on("mouseout", function(d) {
div.transition()
.duration(500)
.style("opacity", 0);
});
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeUpdate.select("circle")
.attr("r", 8)
.style("fill", function(d) {
return d.nodalColor;
});
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," +
source.x +
")";
})
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function(d) {
return d.target.id;
});
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal({
source: o,
target: o
});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {
x: source.x,
y: source.y
};
return diagonal({
source: o,
target: o
});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
//console.log('dataa---',d.parentid);
//var typeId = d.data.parentid;
console.log('check data--->', d.children);
console.log('check data--->', d._children);
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
if (d.childId != null && d.childId != 'undefined' && d.children == null) {
updateTree(d.childId);
}
}
update(d);
/*console.log('asapData---',d.aspid);
passParentId(d.aspid);*/
}
}
答案 0 :(得分：0)
尝试增加当前设置为500px（减去边距）的画布的高度，因为它会限制节点之间的垂直间距，无论使用什么其他CSS。