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Custom SVG Symbol for location for highcharts

I have to create a location SVG icon in a similar way which is created for plus. I don't know how to create the icons in a similar style.
Location Icon: https://fonts.google.com/icons?selected=Material+Icons:add_location:
Icon creation:
Highcharts.SVGRenderer.prototype.symbols.plus = function (x, y, w, h)
{
return [ 'M', x, y + h / 2, 'L', x + w, y + h / 2, 'M', x + w / 2, y, 'L', x + w / 2, y + h, 'z' ];
};
Use
this.iConobject = this.highChart.renderer
.symbol('plus', 0, 0, iconSize, iconSize)
.attr({
fill: 'blue',
stroke: 'black',
'stroke-width': 1
})
.add()
.toFront()
.hide();
passing X and Y location dyanmaic
this.iConobject.plusIcon
.attr({
x: normalizedEvent.chartX - iconSize / 2,
y: myObj.highChart.plotTop - iconSize / 2
})
.show()

Here you have one in plain SVG. I don't know if it is useful in your case.
#map {
width: 400px;
height: 400px;
position: relative;
margin: 10px;
border: thin solid black;
}
.point {
background-image: url('data:image/svg+xml;base64,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');
background-repeat: no-repeat;
position: absolute;
width: 20px;
height: 30px;
}
<p>The basic icon:</p>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 30" width="100" height="150">
<defs>
<mask id="m1">
<path d="M 20,10 C 20,15 10,30 10,30 10,30 0,15 0,10 0,5 5,0 10,0 15,0 20,5 20,10 Z" fill="white" />
<line x1="10" y1="5" x2="10" y2="15" stroke-width="2.5" stroke="black"/>
<line x1="5" y1="10" x2="15" y2="10" stroke-width="2.5" stroke="black"/>
</mask>
</defs>
<rect width="20" height="30" fill="gray" mask="url(#m1)"/>
</svg>
<p>A "map":</p>
<div id="map">
<span class="point" style="left:100px;top:50px"></span>
<span class="point" style="left:200px;top:100px"></span>
</div>

Isolate section of SVG when mouse is hovered

I am attempting to build an interactive map from scratch. I have an SVG of the map of Canada that has separate layers for each province. I'd like to highlight a specific province/territory when the mouse is hovered over it.
I have tried using a function that gets the live update of the mouse coordinates, but I am unsure as to how to figure out which section of the image it is on. I am unsure as to if this is the best method of doing it.
Through some of my research, I have found a method of gathering the pointer coordinates:
let x = 0;
let y = 0;
function showCoords() {
x = event.clientX;
y = event.clientY;
}
And I call it around the SVG using:
<div onmousemove="showCoords()">
...SVG HERE
</div>
I can select the different layers inside of the SVG, but the question is if I can find a way of checking which layer my mouse is currently over.
Thank you!
Edit:
I have reached a solution that accomplishes my goal, but I am unsure as to if it is efficient.
Using CSS, I fill each group upon hover:
#canada {
fill: hsl(0, 0%, 29%);
}
#canada g {
transition: .3s;
}
#canada g:hover {
fill: hsl(189, 88%, 59%);
}
I am also using the onClick option on each group to pull up their dialogue.

Maybe something like this? Just keep "data-name" attribute on each <g> inside svg code.
let x = 0;
let y = 0;
let svgCountry = document.querySelector("#states svg");
let svgStates = svgCountry.querySelectorAll("[data-name]");
let resContainer = document.getElementById("state-hovered-is");
// init tooltip
function showCoords(event) {
let x = event.clientX;
let y = event.clientY;
resContainer.setAttribute("style", "left:" + (x + 15) + "px;" + "top:" + (y - 50) + "px;");
}
// close tooltip
function clearCoor() {
resContainer.innerHTML = "";
}
// clear everything
function clearAllOn() {
svgStates.forEach(function(el) {
el.classList.remove("hover");
resContainer.innerHTML = "";
console.clear();
});
}
// display current state in div
function displayState(el) {
var res = el.getAttribute("data-name");
el.classList.add("hover");
resContainer.innerHTML = "<p>You're at" + " " + res + "</p>";
console.log(res);
}
svgStates.forEach(function(el) {
// mouse events
el.addEventListener("mouseenter", function() {
displayState(el);
});
el.addEventListener("mouseleave", function() {
clearAllOn();
});
// touch events
el.addEventListener("touchstart", function() {
clearAllOn();
displayState(el);
});
});
body {
background-color: #fff;
font-family: Arial, Helvetica, sans-serif;
color: #333;
}
g.hover {
opacity: 0.5;
}
#states {
margin: 0 auto;
width: 600px;
max-width: 100%;
position: relative;
}
#state-hovered-is {
text-align: center;
min-height: 50px;
position: fixed;
pointer-events: none;
background-color: rgba(0, 0, 0, 0.76);
border-radius: 6px;
}
#state-hovered-is p {
color: #fff;
margin: 0;
padding: 15px;
width: 180px;
}
<div id="states" onmousemove="showCoords(event)" onmouseout="clearCoor()">
<!-- State name here -->
<div id="state-hovered-is"></div>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 961.38 830.7">
<defs>
<style>
.cls-1 { fill: #fff;}
.cls-2 {fill: #b8c4e6;}
.cls-3 {fill: #ce8080;}
.cls-4 {fill: #e99bd2;}
.cls-5 {fill: #acac90;}
.cls-6 {fill: #e6c0c0;}
.cls-7 {fill: #4d6ac1;}
.cls-8 {fill: #c9e6b8;}
.cls-9 {fill: #f3f3db;}
.cls-10 {fill: #cece71;}
.cls-11 {fill: #7188ce;}
.cls-12 {fill: #daa0a0;}
.cls-13 {fill: #91916b;}
.cls-14 {fill: #dada94;}
.cls-15 {fill: #916b86;}
</style>
</defs>
<title>Canada</title>
<g id="Layer_1">
<ellipse class="cls-1" cx="480.69" cy="415.35" rx="679.8" ry="587.39" />
<path class="cls-1" d="M539.84,220.75c-2.45,5-6.57,8.18-10.72,11.7l2-9.56C534.53,224.17,537,221.84,539.84,220.75Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M53,543.56c-1.09,2.13-2.18,4.23-3.52,6.84l-.51-10.68.56-.25Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M771.19,558.14c-.32-2.18-.77-4.36-.89-6.56a3.15,3.15,0,0,1,1.31-2.05,1.76,1.76,0,0,1,1.64.49,4.19,4.19,0,0,1,.17,2.5c-.48,1.84-1.18,3.62-1.79,5.43Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M40.77,527.77l-7-8.41.35-.18A76,76,0,0,1,40.4,524c.77.71.87,2.14,1.27,3.25Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M493.56,95.47l3.41,6L485.7,105a30.91,30.91,0,0,1,2.81-2.42C491.7,100.51,493.64,100.2,493.56,95.47Z" transform="translate(-0.06 -0.26)" />
</g>
<g id="Yukon" data-name="Yukon">
<path class="cls-3" d="M174.12,185.61c.91,1.61.88,2.8-.63,4.31-4.21,4.21-8.16,8.68-12.2,13.07-.34.38-.78,1-.72,1.39.58,3.9-2,6.08-4.31,8.53a6.48,6.48,0,0,0-1.84,3.83,5.33,5.33,0,0,0,1.79,3.5c1.85,1.68,4.07,2.94,6,4.53,3.45,2.83,3.47,5.7.33,9.15-2.19,2.39-4.41,4.77-6.37,7.34-1.76,2.3-1.12,4.05,1.42,5.49,1.4.81,2.66,1.88,4.19,3-2.18,1.51-3.35,2.81-2.33,5.22.45,1.05,0,2.31-1.73,2.4a17.09,17.09,0,0,0-3.62.83c-4.36,1.21-5.4,4.72-5.53,8.56a57.14,57.14,0,0,0,.5,10c.23,1.57,1.5,3,2.39,4.63-2.26,2.84-2.38,6.32-1.6,10.12a46.41,46.41,0,0,1,.52,7.56,1.6,1.6,0,0,1-.82,1.17c-2.55,1.24-3,3.61-3.48,6a9.38,9.38,0,0,1-1.27,3.48,10.68,10.68,0,0,0-1.7,8.87,2.39,2.39,0,0,1-.44,1.48c-.6,1-1.32,2-2,2.93-1.42,2.18-1.43,4,.77,5.24,3.32,1.83,3.1,4.7,2.57,7.41-.72,3.66-.45,6.87,2,9.78,1.47,1.77,1.39,3.3-.37,4.95a7.72,7.72,0,0,0-1.45,3.08c-.28.81-.27,1.71-.5,2.53-1.52,5.43,1,6.26,4.74,7.61,1.41.5,2.57,1.66,3.93,2.34a26.86,26.86,0,0,0,4.63,1.87c1.72.5,3.51.73,5.24,1.06.05.25.15.5.1.53-3,2.14-3,5.28-2.81,8.48.09,2,0,4,0,6.25A575.11,575.11,0,0,1,48.14,298a7.87,7.87,0,0,1,.58-.75c3.2-3.33,3.13-5.09-.71-7.55a38.29,38.29,0,0,0-6.52-3.12c-2.14-.86-3.05-5-1.32-6.73q13.23-13,26.49-26c6.81-6.67,13.65-13.31,20.46-20q13.26-13,26.5-26,10.56-10.35,21.15-20.68,11.07-10.83,22.16-21.66c1.92-1.87,3.87-3.74,6-5.43a2.44,2.44,0,0,1,2.34-.08,12.63,12.63,0,0,1,4.51,7.68c.95,5.52,2.44,10.95,3.73,16.42A5.64,5.64,0,0,0,174.12,185.61Z" transform="translate(-0.06 -0.26)" />
</g>
<g id="British_Columiba" data-name="British Columiba">
<g>
<path class="cls-4" d="M190.26,405.28c.27.14.53.31,1.06.62-1,1.88-2,3.69-2.9,5.53-5.64,11.14-11.24,22.3-16.9,33.43-4.43,8.73-8.92,17.42-13.38,26.13l-19.37,37.93c-.21.42-.68.84-.65,1.24.17,2.7,0,5.24-2.52,6.95.78,2,1.25,4.14,2.45,5.8.82,1.15,1.83,1.89,1.89,3.54s.46,3.46,2.33,4.55c2.39,1.41,1.92,4.19,2.3,6.41.31,1.81-.17,3.77-.35,5.66s.8,3.35,2.22,4.62a2.72,2.72,0,0,1,.81,2.17,5.54,5.54,0,0,0,1.49,5.42c.88,1,1.18,2.44,1.69,3.71.82,2,1.6,4,2.38,6,1,2.51,2,5,2.9,7.55.32.88.14,2.18.72,2.67,3.23,2.74,2.75,6.63,3,10.1a15.41,15.41,0,0,0,3.74,8.9c3.16,3.57,2.61,7,1.68,10.73-.83,3.31-1.92,6.57-3,9.84s-.35,6.2,1.21,9.74c-5.31-2.27-10.13-4.28-14.9-6.38-10.53-4.64-21.08-9.23-31.54-14-8.14-3.72-16.25-7.52-24.19-11.65-8.81-4.6-17.41-9.61-26.09-14.47a2,2,0,0,1-1-1.12,65.21,65.21,0,0,1-1-7.47c-.16-3.6-1.05-5-4.37-5.94,0-1.19,0-2.34,0-3.5a3.82,3.82,0,0,0-2.71-3.76c-1.17-.5-3.27-.93-3.32-1.53a9.88,9.88,0,0,1,.91-5.44c3.08-5.49,3.08-7.06-1-11.44-2.29-2.47-4.78-4.79-6.82-7.46a9.16,9.16,0,0,1-1.44-4.76c-.2-2.61-1.08-4.69-3.49-5.72-3.27-1.39-4.67-4.2-5.48-7.23a5.27,5.27,0,0,1,1-4.36,5.48,5.48,0,0,0,1.59-5.2c-.48-3.26,1.93-4.89,4.78-5.55a19.58,19.58,0,0,0,3.83-1c2.43-1.12,2.65-3.06.7-4.87a7.78,7.78,0,0,1-2-9.22c1.46-3.4,1.33-5.05-1-6.15-1.19-.56-2.78-.29-4.19-.39-.47,0-.93-.05-1.65-.09,1.67-3,3-5.78,6.86-6.28a4.12,4.12,0,0,0,3.2-2.73c.72-1.68,2.44-2.95,3.74-4.38,1.14-1.23,1.82-2.81.52-4a5.8,5.8,0,0,0-4-1A30.06,30.06,0,0,0,44.62,459c-1.84-6.08-.47-11.9,1.17-17.65A3.74,3.74,0,0,1,48,439.05c7.2-1.55,10.53-7,13.68-12.85a30.35,30.35,0,0,1,3.83-4.91c1.69-2,2.72-4.14,1.8-6.84s-1.71-5.51-2.66-8.23A52.51,52.51,0,0,0,62,399.51c-1.34-2.62-.9-5.19-.39-7.83q2.15-11.08,4.26-22.15c1.08-5.61,2.21-11.21,3.21-16.84a9.48,9.48,0,0,0-.36-2.74c-.16-1.32-.33-2.65-.44-4-.14-1.58-.18-3.17-.36-4.74a11.92,11.92,0,0,1,1.16-7.34c1.92-3.53,1.66-7.9-.48-9.87l1.06-1.21c7.65,6.68,15.29,13.38,23.2,19.74,8.69,7,17.59,13.76,26.79,20,13.27,9,26.71,17.88,40.42,26.24C169.85,394.8,180.18,399.83,190.26,405.28Z" transform="translate(-0.06 -0.26)" />
<path class="cls-4" d="M67.71,323.4c-4.2-2.13-8.84-4.21-13.43-1.55-2.84,1.64-5.18.87-8.06.13,2.21-2.52,1.9-5.53,1.88-8.49s0-6.08,0-9.44a8.14,8.14,0,0,1,1.68.85c5.42,4.9,10.73,9.92,16.24,14.72l3.65,3.2L68.61,324A4,4,0,0,0,67.71,323.4Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M52.34,580.17c.15,1.23-.68,2.57-1.25,4.47-2.23-1.77-4.17-2.89-5.53-4.5a75.63,75.63,0,0,1-5.85-8.23,3.32,3.32,0,0,1-.2-2.75c2.52-5.09,2.08-6.95-3.06-9.61-1.82-.94-2.5-1.94-2.32-4,.32-3.52.35-4.15-4.79-9.94,2-2.92,1.55-3.82-.24-7-1.32-2.35-1.69-5.31-2.07-8.06-.29-2.13-.63-4-2.58-5.25a2.26,2.26,0,0,1-.79-1.75c.24-3.45.6-6.89.93-10.33,2-.08,2.8,1.11,3.33,2.71A29.72,29.72,0,0,0,36,529,45.65,45.65,0,0,1,43,536.54c1.16,1.66,1.53,4.06,1.7,6.17a84.4,84.4,0,0,1,0,10.06c-.17,4.12,1.42,7.63,3.38,11.07a18,18,0,0,1,2.24,4.56A109.17,109.17,0,0,1,52.34,580.17Z" transform="translate(-0.06 -0.26)" />
<path class="cls-1" d="M17.57,426.81l6.17,8.48C16.39,441.78,11.81,449.73,11,459.7,10.41,448.18,12.87,437.39,17.57,426.81Z" transform="translate(-0.06 -0.26)" />
</g>
</g>
<g id="Alberta" data-name="Alberta">
<path class="cls-5" d="M194.56,407.63c27.17,14.46,55.83,25.35,85,35.57L214.1,643.67c-10.88-4-21.29-7.82-31.68-11.68-3.52-1.3-6.91-3-10.51-4s-5.08-3.41-6.18-6.74c-1.26-3.84-.43-7.18,1.12-10.59A26.88,26.88,0,0,0,169.13,597a4.52,4.52,0,0,0-1-2.58c-4.16-4.42-5.32-9.88-5.71-15.66-.07-1-.13-2.32-.75-2.88-2.84-2.56-2.45-6.26-3.65-9.38-.64-1.69-1.62-3.26-2.29-4.95-.84-2.14-1.52-4.35-2.27-6.53-.05-.15-.06-.35-.17-.44a6.25,6.25,0,0,1-2-7.07c.17-.6-1.07-1.75-1.85-2.43a2.33,2.33,0,0,1-1.08-2.43,28.92,28.92,0,0,0-.52-7.52c-.36-2.17,0-4.65-2.15-6.28-1.47-1.09-1.92-2.71-2.35-4.49-.35-1.45-1.6-2.69-2.47-4-.51-.77-1.07-1.51-1.72-2.42,2.55-1.41,2.87-3.59,2.69-6a5,5,0,0,1,.5-2.5q5-9.88,10-19.7c6.78-13.11,13.63-26.19,20.37-39.32,3.84-7.45,7.51-15,11.31-22.47C187.5,421.2,191,414.48,194.56,407.63Z" transform="translate(-0.06 -0.26)" />
</g>
</svg>
</div>
Here's how the full map looks: https://jsfiddle.net/darkosss/7umphzwn/

I want to place boxes of text and images on the corners of the path. How to do that?

I have defined a path over which a red dot moves on scrolling up and down. I want to place boxes of text and images on the corners of the path. So how do I go about doing that?
function positionTheDot() {
// What percentage down the page are we?
var scrollPercentage = (document.documentElement.scrollTop + document.body.scrollTop) / (document.documentElement.scrollHeight - document.documentElement.clientHeight);
// Get path length
var path = document.getElementById("theMotionPath");
var pathLen = path.getTotalLength();
// Get the position of a point at <scrollPercentage> along the path.
var pt = path.getPointAtLength(scrollPercentage * pathLen);
// Position the red dot at this point
var dot = document.getElementById("dot");
dot.setAttribute("transform", "translate(" + pt.x + "," + pt.y + ")");
};
// Update dot position when we get a scroll event.
window.addEventListener("scroll", positionTheDot);
// Set the initial position of the dot.
positionTheDot();
.verylong {
height: 2000px;
}
svg {
width: 1000px;
height: 1000px;
align: center;
}
body {
background-color: #333333;
}
h1 {
color: red;
font-size: 50px;
text-align: center;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="/scripts/snippet-javascript-console.min.js?v=1"></script>
<svg viewBox="0 0 820 820" xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink">
<path d="M10 10 H 600 V 500 H 10 L 10 10" stroke="#d3d3d3" stroke-width="5" fill="none" id="theMotionPath"/>
<!--<circle cx="10" cy="110" r="3" fill="#000"/> <!--The bottom grey dot-->
<!-- <circle cx="110" cy="10" r="3" fill="#000"/> <!--The top grey dot-->
<!-- Red circle which will be moved along the motion path. -->
<circle cx="0" cy="0" r="5" fill="red" id="dot"/>
</svg>
<div class="verylong">
</div>
This is what I tried to do by adding div, I had added cx and cy in div but that didn't help.
div {
width: 320px;
padding: 10px;
border: 5px solid gray;
margin: 0;
}
</style>
</head>
<body>
<svg viewBox="0 0 120 120">
<svg viewBox="0 0 820 820" xmlns="http://www.w3.org/2000/svg"
version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink">
<path d="M10 10 H 600 V 500 H 10 L 10 10" stroke="#d3d3d3" stroke-
width="5" fill="none" id="theMotionPath"/>
<!-- Red circle which will be moved along the motion path. -->
<circle cx="0" cy="0" r="5" fill="red" id="dot"/>
<div>This text is the actual content of the box.</div>
</svg>

How do I get rid of blank spaces that appear at the end of Tspan elements in svg?

I'm implementing svg in an xslt transformation. As part of this, I have to put a url in a box. However, the box can only be a certain width, so I wrote a function in javascript for word wrapping, since SVG doesn't support word wrapping. Basically, the javascript is splitting the string into five sections and putting them in different tspan elements. However, at the end of each tspan element, a blank space is appearing. This makes copying and pasting the link impossible, which is essentially the function of the info url. How do I get rid of this blank space?
I'm very new to SVG and XSLT.
Here's the javascript word wrapping function:
function wrapURLText(url){
var char="";
var urlString = url;
var bufferString ="";
var stringLength = urlString.length;
var bufferStringLength=stringLength;
var charCaps="";
var charsize=0;
var tempStringSize=0;
var i=0;
var j=0;
while (j<5)
{
charsize=0;
tempStringSize=0;
bufferString="";
i=0;
while (i<bufferStringLength) {
char = urlString.charAt(i);
charCaps = char.toUpperCase();
if (char >= '0' && char <= '9') {
charsize=6.5;
}
else if (char==charCaps) {
charsize=11.5;
}
else if (char!=charCaps) {
charsize=8.6;
}
else charsize=5;
tempStringSize += charsize;
if (tempStringSize<=400) {
bufferString=bufferString.concat(char);
}
if (i==stringLength) {
return;
}
if (tempStringSize>400) {
bufferString=bufferString.concat(char);
i++;
break;
}
i++;
}
j++
$('#urlText'+j).text(bufferString);
urlString= urlString.substring(i,stringLength);
}
}
Here's the SVG it's referring to (in an xslt transformation):
<g>
<rect id="infoURL" width="400" height="120" x="35" y="270" fill="#ECECEC" stroke="#CCCCCC" rx="3" ry="3"/>
<text id="urlText" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="290">
<tspan id="urlText1" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="290" />
<tspan id="urlText2" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="310" />
<tspan id="urlText3" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="330" />
<tspan id="urlText4" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="350" />
<tspan id="urlText5" class="infoItems" text-anchor="left" style="font-family: Arial; font-size:16; stroke: #333333; fill:#333333;" x="40" y="370" />
</text>
</g>
I would be very grateful to anyone that can help!

d3js zoom + drag causes conflict

I am trying to apply the zoom behaviour to a svg where certain elements in the svg are already bound with drag behaviour. without the zoom behaviour drag works fine, without the drag behaviour zoom works fine. When I have both of them it conflicts. When I drag a circle all the other circles starts to drag with it.
Here is the fiddle.
can anyone help me to figure out the issue?
<svg height="600" width="600" style="background: black">
<g>
<rect x="0" y="0" , width="600" height="40" style="fill:gold;"></rect>
<circle id='drag' cx="15" cy="20" init-cx="15" init-cy="20" r="10"
style="stroke: white; stroke-width: 2px; fill:blue"/>
</g>
<g id="playground">
<g>
<circle class='top' cx="180" cy="120" r="30" style="stroke: white; stroke-width: 2px; fill:white"/>
</g>
<g>
<circle class='top' cx="200" cy="220" r="30" style="stroke: white; stroke-width: 2px; fill:white"/>
</g>
<g>
<circle class='top' cx="320" cy="150" r="50" style="stroke: white; stroke-width: 2px; fill:white"/>
</g>
</g>
var zoom = d3.behavior.zoom()
.scaleExtent([-1, 8])
.on("zoom", function () {
var graph = d3.select('svg');
graph
.select('#playground')
.selectAll('circle')
.select(function () {
return this.parentNode;
})
.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
});
var move = d3.behavior.drag()
.on('drag', function () {
console.log('dragging');
var curr = d3.select(this)
.attr({
cx: d3.mouse(this)[0],
cy: d3.mouse(this)[1]
})
})
.on('dragend', function () {
var curr = d3.select(this);
d3.select('#playground')
.append('circle')
.attr({
cx: curr.attr('cx'),
cy: curr.attr('cy'),
r: curr.attr('r')
})
.style({
fill: 'white',
stroke: 'red',
'stroke-width': '2px'
})
;
curr.attr({
cx: curr.attr('init-cx'),
cy: curr.attr('init-cx')
});
})
;
d3.select('#drag').call(move);
d3.select('.top')
.call(d3.behavior.drag().on('drag', function () {
d3.select(this)
.attr({
cx: d3.mouse(this)[0],
cy: d3.mouse(this)[1]
})
;
}));
d3.select('svg').call(zoom);

I have implemented individual dragging of nodes working along with overall zooming and panning functionality. Used stopPropagation of the event in dragstart event of circles.
Hope this helps.
var move = d3.behavior.drag()
.on("dragstart", function() {
d3.event.sourceEvent.stopPropagation();
});
Working JSFiddle