css - Adding an image within a circle object in d3 javascript? - Stack Overflow

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My goal is to add an image into an existing circle with d3. The circle will render and is interactive with mouseover method, but only when I use "fill", "color", and not something more sophisticated like .append("image").

g.append("circle")
    .attr("class", "logo")
    .attr("cx", 700)
    .attr("cy", 300)
    .attr("r", 10)
    .attr("fill", "black")       // this code works OK
    .attr("stroke", "white")     // displays small black dot
    .attr("stroke-width", 0.25)
    .on("mouseover", function(){ // when I use .style("fill", "red") here, it works 
        d3.select(this)        
            .append("svg:image")
            .attr("xlink:href", "/assets/images/logo.jpeg")
            .attr("cx", 700)
            .attr("cy", 300)
            .attr("height", 10)
            .attr("width", 10);
     });

The image doesn't show after I mouse over. Using Ruby on Rails app, where my image "logo.jpeg" is stored in the assets/images/ directory. Any help for getting my logo to show within the circle? Thanks.

My goal is to add an image into an existing circle with d3. The circle will render and is interactive with mouseover method, but only when I use "fill", "color", and not something more sophisticated like .append("image").

g.append("circle")
    .attr("class", "logo")
    .attr("cx", 700)
    .attr("cy", 300)
    .attr("r", 10)
    .attr("fill", "black")       // this code works OK
    .attr("stroke", "white")     // displays small black dot
    .attr("stroke-width", 0.25)
    .on("mouseover", function(){ // when I use .style("fill", "red") here, it works 
        d3.select(this)        
            .append("svg:image")
            .attr("xlink:href", "/assets/images/logo.jpeg")
            .attr("cx", 700)
            .attr("cy", 300)
            .attr("height", 10)
            .attr("width", 10);
     });

The image doesn't show after I mouse over. Using Ruby on Rails app, where my image "logo.jpeg" is stored in the assets/images/ directory. Any help for getting my logo to show within the circle? Thanks.

• javascript
• css
• ruby-on-rails
• d3.js

Share Improve this question Follow edited Sep 17, 2020 at 0:35 qtmfld 3,17722 gold badges2323 silver badges3737 bronze badges asked Oct 5, 2013 at 20:34 DeBraidDeBraid 9,44155 gold badges3333 silver badges4343 bronze badges 1

• 2 Try setting the image as a pattern. – Lars Kotthoff Commented Oct 5, 2013 at 21:21

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2 Answers 2

Sorted by: Reset to default 31

As Lars says you need to use pattern, once you do that it becomes pretty straightforward. Here's a link to a conversation in d3 google groups about this. I've set up a fiddle here using the image of a pint from that conversation and your code above.

To set up the pattern:

    <svg id="mySvg" width="80" height="80">
      <defs id="mdef">
        <pattern id="image" x="0" y="0" height="40" width="40">
          <image x="0" y="0" width="40" height="40" xlink:href="http://www.e-pint.com/epint.jpg"></image>
        </pattern>
      </defs>
    </svg>

Then the d3 where we only change the fill:

svg.append("circle")
         .attr("class", "logo")
         .attr("cx", 225)
         .attr("cy", 225)
         .attr("r", 20)
         .style("fill", "transparent")       
         .style("stroke", "black")     
         .style("stroke-width", 0.25)
         .on("mouseover", function(){ 
               d3.select(this)
                   .style("fill", "url(#image)");
         })
          .on("mouseout", function(){ 
               d3.select(this)
                   .style("fill", "transparent");
         });

nodeEnter.append("svg:image")
            .attr('x',-9)
            .attr('y',-12)
            .attr('width', 20)
            .attr('height', 24)
            .attr("xlink:href", function(d) { 
         if(d.type=="root"){
            return "resources/images/test.png";}
            else if(d.type.toLowerCase()=="A"){
                return "resources/icon01/test1.png";}
            else if(d.type=="B"){
                return "resources/icon01/test2.png";}
            })
            .append("svg:title")
              .text(function(d){
              if(d.type=="root"){
                return "Root Name:"+d.name;}
              else if(d.type=="test"){
                return "Name:"+d.name;}
            });

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