Javascript 在Rails 4上实现力定向图的鱼眼(使用d3.js)
我正在尝试使用d3.js在力定向图上实现鱼眼失真。出于某种原因,失真作用于链接,而不是节点。这可能是由于节点是g元素造成的,但我不确定。任何帮助都将不胜感激Javascript 在Rails 4上实现力定向图的鱼眼(使用d3.js),javascript,jquery,ruby-on-rails,d3.js,Javascript,Jquery,Ruby On Rails,D3.js,我正在尝试使用d3.js在力定向图上实现鱼眼失真。出于某种原因,失真作用于链接,而不是节点。这可能是由于节点是g元素造成的,但我不确定。任何帮助都将不胜感激 var svg, node, link; function make_graph() { // Clear out the div first $("#display_graph svg:first").remove(); // Sets size var width = 960, height = 500
var svg, node, link;
function make_graph() {
// Clear out the div first
$("#display_graph svg:first").remove();
// Sets size
var width = 960,
height = 500;
// Maps groups to colors
var color = d3.scale.category20();
// Select the div and append a svg
svg = d3.select("#display_graph").append("svg")
.attr("width", width)
.attr("height", height);
// Pull json from graph
var json_from_db = $('.graph_json').data('json');
var json_nodes = json_from_db.nodes
var json_links = json_from_db.links
// Sets up the force directed graph
var charge_val = $('#charge').val();
var link_distance_val = $('#link_distance').val();
var force = d3.layout.force()
.charge(charge_val)
.linkDistance(link_distance_val)
.size([width, height])
.nodes(json_nodes)
.links(json_links)
.start();
link = svg.selectAll(".link")
.data(json_links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var font_size_px = $('#font_size').val();
node = svg.selectAll(".node")
.data(json_nodes)
.enter().append("g")
.attr("class", "node")
.style("font-size", font_size_px)
.call(force.drag);
var radius = $('#radius').val();
node.append("circle")
.attr("r", radius)
.style("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.name; });
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
});
$('#fisheye_btn').click( function() {
var glyph_color = $(this).css('color');
// original color is white
orig_color = 'rgb(255, 255, 255)';
if (glyph_color == orig_color) {
$(this).css('color', 'orange');
} else {
$(this).css('color', orig_color);
};
});
};
function make_fisheye() {
var fisheye = d3.fisheye.circular()
.radius(200)
.distortion(2);
svg.on("mousemove", function() {
fisheye.focus(d3.mouse(this));
node.each(function(d) { d.fisheye = fisheye(d); })
.attr("cx", function(d) { return d.fisheye.x; })
.attr("cy", function(d) { return d.fisheye.y; })
.attr("r", function(d) { return d.fisheye.z * 4.5; });
link.attr("x1", function(d) { return d.source.fisheye.x; })
.attr("y1", function(d) { return d.source.fisheye.y; })
.attr("x2", function(d) { return d.target.fisheye.x; })
.attr("y2", function(d) { return d.target.fisheye.y; });
});
}
最后,我希望用户能够通过单击按钮打开或关闭失真。谢谢你的帮助
我更新了代码。我现在可以通过点击按钮打开或关闭失真
// Make force directed graph on button click
$(document).ready( function() {
$("#refresh_btn").click( function() {
make_graph();
});
});
// Turn on and off fisheye distortion
$(document).ready( function() {
$('#fisheye_btn').click( function() {
var glyph_color = $(this).css('color');
// original color is white
orig_color = 'rgb(255, 255, 255)';
if (glyph_color == orig_color) {
$(this).css('color', 'orange');
make_graph();
make_fisheye();
} else {
$(this).css('color', orig_color);
make_graph();
};
});
});
var svg, node, link;
function make_graph() {
// Clear out the div first
$("#display_graph svg:first").remove();
// Sets size
var width = 960,
height = 500;
// Maps groups to colors
var color = d3.scale.category20();
// Select the div and append a svg
svg = d3.select("#display_graph").append("svg")
.attr("width", width)
.attr("height", height);
// Pull json from graph
var json_from_db = $('.graph_json').data('json');
var json_nodes = json_from_db.nodes
var json_links = json_from_db.links
// Sets up the force directed graph
var charge_val = $('#charge').val();
var link_distance_val = $('#link_distance').val();
var force = d3.layout.force()
.charge(charge_val)
.linkDistance(link_distance_val)
.size([width, height])
.nodes(json_nodes)
.links(json_links)
.start();
link = svg.selectAll(".link")
.data(json_links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var font_size_px = $('#font_size').val();
node = svg.selectAll(".node")
.data(json_nodes)
.enter().append("g")
.attr("class", "node")
.style("font-size", font_size_px)
.call(force.drag);
var radius = $('#radius').val();
node.append("circle")
.attr("r", radius)
.style("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.name; });
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
});
};
function make_fisheye() {
var fisheye = d3.fisheye.circular()
.radius(200)
.distortion(2);
svg.on("mousemove", function() {
fisheye.focus(d3.mouse(this));
node.each(function(d) { d.fisheye = fisheye(d); })
.attr("cx", function(d) { return d.fisheye.x; })
.attr("cy", function(d) { return d.fisheye.y; })
.attr("r", function(d) { return d.fisheye.z * 4.5; });
link.attr("x1", function(d) { return d.source.fisheye.x; })
.attr("y1", function(d) { return d.source.fisheye.y; })
.attr("x2", function(d) { return d.target.fisheye.x; })
.attr("y2", function(d) { return d.target.fisheye.y; });
});
}
不幸的是,我仍然有问题,只是链接被扭曲。节点实际上是g元素,我越来越相信这可能是问题所在。有没有一种方法可以使用d3.js选择g元素内部的元素?我很惊讶鱼眼失真并不仅仅传递给g元素内部的元素。也许我猜错了
新代码
现在,点击一个按钮,节点和链接都扭曲了!代码如下:
// Global variables
var svg, node, link;
var fisheye_on = false;
// Make force directed graph on button click
$(document).ready( function() {
$("#refresh_btn").click( function() {
// Make sure fisheye is turned off
$('#fisheye_btn').css('color', 'white');
fisheye_on = false;
make_graph();
});
});
// Turn on and off fisheye distortion
$(document).ready( function() {
$('#fisheye_btn').click( function() {
var glyph_color = $(this).css('color');
// original color is white
orig_color = 'rgb(255, 255, 255)';
if (glyph_color == orig_color) {
$(this).css('color', 'orange');
fisheye_on = true;
make_graph();
} else {
$(this).css('color', orig_color);
fisheye_on = false;
make_graph();
};
});
});
function make_graph() {
// Clear out the div first
$("#display_graph svg:first").remove();
// Sets size
var width = 960,
height = 500;
// Maps groups to colors
var color = d3.scale.category20();
// Select the div and append a svg
svg = d3.select("#display_graph").append("svg")
.attr("width", width)
.attr("height", height);
// Pull json from graph
var json_from_db = $('.graph_json').data('json');
var json_nodes = json_from_db.nodes
var json_links = json_from_db.links
// Sets up the force directed graph
var charge_val = $('#charge').val();
var link_distance_val = $('#link_distance').val();
var force = d3.layout.force()
.charge(charge_val)
.linkDistance(link_distance_val)
.size([width, height])
.nodes(json_nodes)
.links(json_links)
.start();
link = svg.selectAll(".link")
.data(json_links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var font_size_px = $('#font_size').val();
node = svg.selectAll(".node")
.data(json_nodes)
.enter().append("g")
.attr("class", "node")
.style("font-size", font_size_px)
.call(force.drag);
var radius = $('#radius').val();
node.append("circle")
.attr("r", radius)
.style("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.name; });
if (fisheye_on == false) {
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
});
} else {
var fisheye = d3.fisheye.circular()
.radius(200)
.distortion(2);
svg.on("mousemove", function() {
fisheye.focus(d3.mouse(this));
node.each(function(d) { d.fisheye = fisheye(d); });
node.selectAll("circle")
.attr("cx", function(d) { return d.fisheye.x - d.x; })
.attr("cy", function(d) { return d.fisheye.y - d.y; })
.attr("r", function(d) { return d.fisheye.z * 4.5; });
node.selectAll("text")
.attr("dx", function(d) { return d.fisheye.x - d.x; })
.attr("dy", function(d) { return d.fisheye.y - d.y; });
link.attr("x1", function(d) { return d.source.fisheye.x; })
.attr("y1", function(d) { return d.source.fisheye.y; })
.attr("x2", function(d) { return d.target.fisheye.x; })
.attr("y2", function(d) { return d.target.fisheye.y; });
});
};
};
不幸的是,我遇到了另一个问题。当应用失真时,似乎存在初始滞后。节点先变形,然后链接变形。不确定是什么原因造成的。有什么提示吗
Public JSFiddle
我设法在公共JSFIDLE中复制了该问题:
要生成图形,只需单击“生成图形”。单击“鱼眼”将打开和关闭鱼眼扭曲。问题是首先节点变形,然后链接随之变形。我希望节点和链接同时被扭曲。任何帮助都将不胜感激 请发布一个完整的工作示例好吗?在您的
make_fisheye
功能中,尝试节点。选择All(“圆圈”)。每个…
都有效。不过我遇到了另一个问题。很快就会发布代码。如果您能在JSFIDLE或类似的东西上放置一个完整的工作示例,这将有所帮助。
var svg, node, link;
function make_graph() {
// Clear out the div first
$("#display_graph svg:first").remove();
// Sets size
var width = 960,
height = 500;
// Maps groups to colors
var color = d3.scale.category20();
// Select the div and append a svg
svg = d3.select("#display_graph").append("svg")
.attr("width", width)
.attr("height", height);
// Pull json from graph
var json_from_db = $('.graph_json').data('json');
var json_nodes = json_from_db.nodes
var json_links = json_from_db.links
// Sets up the force directed graph
var charge_val = $('#charge').val();
var link_distance_val = $('#link_distance').val();
var force = d3.layout.force()
.charge(charge_val)
.linkDistance(link_distance_val)
.size([width, height])
.nodes(json_nodes)
.links(json_links)
.start();
link = svg.selectAll(".link")
.data(json_links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var font_size_px = $('#font_size').val();
node = svg.selectAll(".node")
.data(json_nodes)
.enter().append("g")
.attr("class", "node")
.style("font-size", font_size_px)
.call(force.drag);
var radius = $('#radius').val();
node.append("circle")
.attr("r", radius)
.style("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.name; });
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
});
$('#fisheye_btn').click( function() {
var glyph_color = $(this).css('color');
// original color is white
orig_color = 'rgb(255, 255, 255)';
if (glyph_color == orig_color) {
$(this).css('color', 'orange');
} else {
$(this).css('color', orig_color);
};
});
};
function make_fisheye() {
var fisheye = d3.fisheye.circular()
.radius(200)
.distortion(2);
svg.on("mousemove", function() {
fisheye.focus(d3.mouse(this));
node.each(function(d) { d.fisheye = fisheye(d); })
.attr("cx", function(d) { return d.fisheye.x; })
.attr("cy", function(d) { return d.fisheye.y; })
.attr("r", function(d) { return d.fisheye.z * 4.5; });
link.attr("x1", function(d) { return d.source.fisheye.x; })
.attr("y1", function(d) { return d.source.fisheye.y; })
.attr("x2", function(d) { return d.target.fisheye.x; })
.attr("y2", function(d) { return d.target.fisheye.y; });
});
}