diff --git a/d3-tip.js b/d3-tip.js
new file mode 100644
index 0000000..df76d41
--- /dev/null
+++ b/d3-tip.js
@@ -0,0 +1,320 @@
+// d3.tip
+// Copyright (c) 2013 Justin Palmer
+// ES6 / D3 v4 Adaption Copyright (c) 2016 Constantin Gavrilete
+// Removal of ES6 for D3 v4 Adaption Copyright (c) 2016 David Gotz
+//
+// Tooltips for d3.js SVG visualizations
+
+d3.functor = function functor(v) {
+ return typeof v === "function" ? v : function() {
+ return v;
+ };
+};
+
+d3.tip = function() {
+
+ var direction = d3_tip_direction,
+ offset = d3_tip_offset,
+ html = d3_tip_html,
+ node = initNode(),
+ svg = null,
+ point = null,
+ target = null
+
+ function tip(vis) {
+ svg = getSVGNode(vis)
+ point = svg.createSVGPoint()
+ document.body.appendChild(node)
+ }
+
+ // Public - show the tooltip on the screen
+ //
+ // Returns a tip
+ tip.show = function() {
+ var args = Array.prototype.slice.call(arguments)
+ if(args[args.length - 1] instanceof SVGElement) target = args.pop()
+
+ var content = html.apply(this, args),
+ poffset = offset.apply(this, args),
+ dir = direction.apply(this, args),
+ nodel = getNodeEl(),
+ i = directions.length,
+ coords,
+ scrollTop = document.documentElement.scrollTop || document.body.scrollTop,
+ scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft
+
+ nodel.html(content)
+ .style('position', 'absolute')
+ .style('opacity', 1)
+ .style('pointer-events', 'all')
+
+ while(i--) nodel.classed(directions[i], false)
+ coords = direction_callbacks[dir].apply(this)
+ nodel.classed(dir, true)
+ .style('top', (coords.top + poffset[0]) + scrollTop + 'px')
+ .style('left', (coords.left + poffset[1]) + scrollLeft + 'px')
+
+ return tip
+ }
+
+ // Public - hide the tooltip
+ //
+ // Returns a tip
+ tip.hide = function() {
+ var nodel = getNodeEl()
+ nodel
+ .style('opacity', 0)
+ .style('pointer-events', 'none')
+ return tip
+ }
+
+ // Public: Proxy attr calls to the d3 tip container. Sets or gets attribute value.
+ //
+ // n - name of the attribute
+ // v - value of the attribute
+ //
+ // Returns tip or attribute value
+ tip.attr = function(n, v) {
+ if (arguments.length < 2 && typeof n === 'string') {
+ return getNodeEl().attr(n)
+ } else {
+ var args = Array.prototype.slice.call(arguments)
+ d3.selection.prototype.attr.apply(getNodeEl(), args)
+ }
+
+ return tip
+ }
+
+ // Public: Proxy style calls to the d3 tip container. Sets or gets a style value.
+ //
+ // n - name of the property
+ // v - value of the property
+ //
+ // Returns tip or style property value
+ tip.style = function(n, v) {
+ // debugger;
+ if (arguments.length < 2 && typeof n === 'string') {
+ return getNodeEl().style(n)
+ } else {
+ var args = Array.prototype.slice.call(arguments);
+ if (args.length === 1) {
+ var styles = args[0];
+ Object.keys(styles).forEach(function(key) {
+ return d3.selection.prototype.style.apply(getNodeEl(), [key, styles[key]]);
+ });
+ }
+ }
+
+ return tip
+ }
+
+ // Public: Set or get the direction of the tooltip
+ //
+ // v - One of n(north), s(south), e(east), or w(west), nw(northwest),
+ // sw(southwest), ne(northeast) or se(southeast)
+ //
+ // Returns tip or direction
+ tip.direction = function(v) {
+ if (!arguments.length) return direction
+ direction = v == null ? v : d3.functor(v)
+
+ return tip
+ }
+
+ // Public: Sets or gets the offset of the tip
+ //
+ // v - Array of [x, y] offset
+ //
+ // Returns offset or
+ tip.offset = function(v) {
+ if (!arguments.length) return offset
+ offset = v == null ? v : d3.functor(v)
+
+ return tip
+ }
+
+ // Public: sets or gets the html value of the tooltip
+ //
+ // v - String value of the tip
+ //
+ // Returns html value or tip
+ tip.html = function(v) {
+ if (!arguments.length) return html
+ html = v == null ? v : d3.functor(v)
+
+ return tip
+ }
+
+ // Public: destroys the tooltip and removes it from the DOM
+ //
+ // Returns a tip
+ tip.destroy = function() {
+ if(node) {
+ getNodeEl().remove();
+ node = null;
+ }
+ return tip;
+ }
+
+ function d3_tip_direction() { return 'n' }
+ function d3_tip_offset() { return [0, 0] }
+ function d3_tip_html() { return ' ' }
+
+ var direction_callbacks = {
+ n: direction_n,
+ s: direction_s,
+ e: direction_e,
+ w: direction_w,
+ nw: direction_nw,
+ ne: direction_ne,
+ sw: direction_sw,
+ se: direction_se
+ };
+
+ var directions = Object.keys(direction_callbacks);
+
+ function direction_n() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.n.y - node.offsetHeight,
+ left: bbox.n.x - node.offsetWidth / 2
+ }
+ }
+
+ function direction_s() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.s.y,
+ left: bbox.s.x - node.offsetWidth / 2
+ }
+ }
+
+ function direction_e() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.e.y - node.offsetHeight / 2,
+ left: bbox.e.x
+ }
+ }
+
+ function direction_w() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.w.y - node.offsetHeight / 2,
+ left: bbox.w.x - node.offsetWidth
+ }
+ }
+
+ function direction_nw() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.nw.y - node.offsetHeight,
+ left: bbox.nw.x - node.offsetWidth
+ }
+ }
+
+ function direction_ne() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.ne.y - node.offsetHeight,
+ left: bbox.ne.x
+ }
+ }
+
+ function direction_sw() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.sw.y,
+ left: bbox.sw.x - node.offsetWidth
+ }
+ }
+
+ function direction_se() {
+ var bbox = getScreenBBox()
+ return {
+ top: bbox.se.y,
+ left: bbox.e.x
+ }
+ }
+
+ function initNode() {
+ var node = d3.select(document.createElement('div'))
+ node
+ .style('position', 'absolute')
+ .style('top', 0)
+ .style('opacity', 0)
+ .style('pointer-events', 'none')
+ .style('box-sizing', 'border-box')
+
+ return node.node()
+ }
+
+ function getSVGNode(el) {
+ el = el.node()
+ if(el.tagName.toLowerCase() === 'svg')
+ return el
+
+ return el.ownerSVGElement
+ }
+
+ function getNodeEl() {
+ if(node === null) {
+ node = initNode();
+ // re-add node to DOM
+ document.body.appendChild(node);
+ };
+ return d3.select(node);
+ }
+
+ // Private - gets the screen coordinates of a shape
+ //
+ // Given a shape on the screen, will return an SVGPoint for the directions
+ // n(north), s(south), e(east), w(west), ne(northeast), se(southeast), nw(northwest),
+ // sw(southwest).
+ //
+ // +-+-+
+ // | |
+ // + +
+ // | |
+ // +-+-+
+ //
+ // Returns an Object {n, s, e, w, nw, sw, ne, se}
+ function getScreenBBox() {
+ var targetel = target || d3.event.target;
+
+ while ('undefined' === typeof targetel.getScreenCTM && 'undefined' === targetel.parentNode) {
+ targetel = targetel.parentNode;
+ }
+
+ var bbox = {},
+ matrix = targetel.getScreenCTM(),
+ tbbox = targetel.getBBox(),
+ width = tbbox.width,
+ height = tbbox.height,
+ x = tbbox.x,
+ y = tbbox.y
+
+ point.x = x
+ point.y = y
+ bbox.nw = point.matrixTransform(matrix)
+ point.x += width
+ bbox.ne = point.matrixTransform(matrix)
+ point.y += height
+ bbox.se = point.matrixTransform(matrix)
+ point.x -= width
+ bbox.sw = point.matrixTransform(matrix)
+ point.y -= height / 2
+ bbox.w = point.matrixTransform(matrix)
+ point.x += width
+ bbox.e = point.matrixTransform(matrix)
+ point.x -= width / 2
+ point.y -= height / 2
+ bbox.n = point.matrixTransform(matrix)
+ point.y += height
+ bbox.s = point.matrixTransform(matrix)
+
+ return bbox
+ }
+
+ return tip
+};
\ No newline at end of file
diff --git a/index.css b/index.css
index dc758b2..6c97254 100644
--- a/index.css
+++ b/index.css
@@ -28,7 +28,11 @@ body
background-color: rgba(0,0,0,0.1);
}
-line-chart
+.d3-tip
{
-
+ background-color: rgba(255,255,255,0.85);
+ font-size: 1.2em;
+ padding: 0 .35em;
+
+ border-radius: .5em;
}
\ No newline at end of file
diff --git a/index.html b/index.html
index 21e036e..a2cee6d 100644
--- a/index.html
+++ b/index.html
@@ -6,6 +6,7 @@
+
diff --git a/index.js b/index.js
index 9a4cf20..e9ef849 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,10 @@
var all_data_points = []; // all_data_points = [ [[x1,y1],[x2,y2],[another point]], [another chart] ]
+var axisTickPadding = 25;
+var axisLabelPadding = 25;
+var axisPadding = axisTickPadding + axisLabelPadding;
+
// gather all data
d3.selectAll("line-chart").each( function () {
var ele = d3.select(this)
@@ -34,40 +38,40 @@ list_line_chart.each( function (data_chart, index_chart) {
}
}
+ var drawing_width = parent_width - axisPadding;
+ var drawing_height = parent_height - axisPadding;
+
// prepare scales
var xscale = d3.scaleLinear().
// set domain with an immediately invoked function
domain(function (arr_point) {
var max_val = d3.max(arr_point,function (point) {
return point[0];
- })
+ }) * 1.1;
var min_val = 0;
return [min_val,max_val];
}(data_chart)).
- // set region to svg width and height
- range([0,parent_width])
+ range([0,drawing_width])
var yscale = d3.scaleLinear().
- // set domain with an immediately invoked function
domain(function (arr_point) {
var max_val = d3.max(arr_point,function (point) {
return point[1];
- })
+ }) * 1.1;
var min_val = 0;
return [min_val,max_val];
}(data_chart)).
- // set region to svg width and height
- range([parent_height,0])
+ range([drawing_height,0])
- var ele_svg = ele_chart.append("svg");
-
- ele_svg.attr("width",parent_width).attr("height",parent_height).
- selectAll("circle").data(function(d) {return d;}).enter().append("circle").
- attr("r",5).
- attr("cx",function (d) {return xscale(d[0]);}).
- attr("cy",function (d) {return yscale(d[1]);})
+ var ele_svg = ele_chart.append("svg").attr("width",parent_width).attr("height",parent_height);
- ele_svg.selectAll("line").data(function(d){
+ var ele_drawingArea = ele_svg.append("g").
+ attr("width",drawing_width).attr("height",drawing_height).
+ attr("transform","translate("+axisPadding+",0)")
+
+ // draw the lines
+ var arr_ele_lines = ele_drawingArea.
+ selectAll("line").data(function(d){
return d.map(function (val,index,arr) {
if (index < arr.length - 1)
{
@@ -94,4 +98,106 @@ list_line_chart.each( function (data_chart, index_chart) {
"stroke-width":"2"
})
+ // draw the points
+ var arr_ele_points = ele_drawingArea.
+ selectAll("circle").data(function(d) {return d;}).enter().append("circle").
+ attr("r",5).
+ attr("cx",function (d) {return xscale(d[0]);}).
+ attr("cy",function (d) {return yscale(d[1]);})
+
+ // create axis objects
+ var xaxis = d3.axisBottom()
+ .scale(xscale)
+ .ticks(10);
+ var yaxis = d3.axisLeft()
+ .scale(yscale)
+ .ticks(10);
+
+ // add axis to svg
+ ele_svg.
+ append("g").classed("xaxis",true).
+ call(xaxis).
+ attr("transform","translate("+axisPadding+","+drawing_height+")")
+
+ ele_svg.
+ append("g").classed("yaxis",true).
+ call(yaxis).
+ attr("transform","translate("+axisPadding+","+"0)")
+
+ // create, add and show tip on mouseover
+ var tip_points = d3.tip()
+ .attr('class', 'd3-tip')
+ .html(function(d) { return "("+d[0]+","+d[1]+")"; })
+
+ var vis = ele_drawingArea
+ // REQUIRED: Call the tooltip on the context of the visualization
+ .call(tip_points)
+
+ arr_ele_points.
+ on('mouseover', function () {
+ tip_points.show.apply(this,arguments);
+
+ var ele_point = d3.select(this);
+ ele_point.
+ transition().
+ duration(.5).
+ attrs({
+ "fill":"rgb(128,128,128)",
+ "r":7
+ })
+ }).
+ on('mouseout', function () {
+ tip_points.hide.apply(this,arguments);
+
+ var ele_point = d3.select(this);
+ ele_point.
+ transition().
+ duration(.5).
+ attrs({
+ "fill":"black",
+ "r":5
+ })
+ })
+
+ arr_ele_lines.
+ on('mouseover', function () {
+ var ele_line = d3.select(this);
+ ele_line.
+ transition().
+ duration(.5).
+ attrs({
+ "stroke":"rgb(128,128,128)",
+ "stroke-width":4
+ })
+ }).
+ on('mouseout', function () {
+ var ele_line = d3.select(this);
+ ele_line.
+ transition().
+ duration(.5).
+ attrs({
+ "stroke":"black",
+ "stroke-width":2
+ })
+ })
+
+ // axis legend
+ ele_svg
+ .append('g').classed("x-label",true)
+ .attr('transform', 'translate(' + (axisPadding+(parent_width - axisPadding)/2) + ', ' + (parent_height - axisLabelPadding/2) + ')')
+ .append('text')
+ .attr('text-anchor', 'middle')
+ // .attr('transform', 'rotate(-90)')
+ .text('X Axis Label')
+ ;
+ ele_svg
+ .append('g').classed("y-label",true)
+ .attr('transform', 'translate(' + (axisLabelPadding) + ', ' + (parent_height - axisPadding)/2 + ')')
+ .append('text')
+ .attr('text-anchor', 'middle')
+ .attr('transform', 'rotate(-90)')
+ .attr("shape-rendering","crispEdges")
+ .text('Y Axis Label')
+ ;
+
})
\ No newline at end of file