"]);

//https://github.com/mbostock/d3/wiki/Force-Layout#force
var force = d3.layout.force()
 .nodes(nodes)
 .links([]) //links are between nodes
 .size([w, h]);

force.on("tick", function(d) {
  svg.selectAll("path")
   .attr("transform", function(d) {
      return "translate(" + d.x + "," + d.y + ")";
    });
});

setInterval(function() {

  // Add a new random shape.
  nodes.push({
    type: d3.svg.symbolTypes[~~(Math.random() * d3.svg.symbolTypes.length)], //pushing symbol types
    size: Math.random() * 300 + 100 //randomize size
  });

  // Restart the layout.
  force.start();

  svg.selectAll("path")
   .data(nodes)
   .enter().append("path")
   .attr("transform", function(d) {
      return "translate(" + d.x + "," + d.y + ")";
    })
   .attr("d", d3.svg.symbol()
     .size(function(d) {
        return d.size;
      })
     .type(function(d) {
        return d.type;
      }))
   .style("fill",  function(d) {
      console.log(d);
      var symbolIndex = 0;
      for(var i=0; i<d3.svg.symbolTypes.length; i++){
        if(d.type == d3.svg.symbolTypes[i])
          symbolIndex=i;
      };
      return color(symbolIndex);
    })
   .style("stroke", "#253544")
   .style("stroke-width", "1.5px")
   .call(force.drag);

}, 3000); //1000 is time
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

Second solution
If you want to explicitly set color for
" ]); 

 //https://github.com / mbostock / d3 / wiki / Force - Layout#force 
 var force = d3.layout.force () 
  .nodes(nodes) 
  .links ([ ]) //links are between nodes 
  .size([w, h ]); 

 force.on("tick ", function(d) { 
   svg.selectAll("path ") 
    .attr("transform ", function(d) { 
       return " translate (" + d.x + ", " + d.y + ") "; 
     }); 
 }); 

 setInterval(function () { 

   // Add a new random condition. 
   nodes.push ({ 
     character: d3.svg.symbolTypes[~~(Math.random () * d3.svg.symbolTypes.length) ], //pushing symbol types 
     size: Math.random () * 300 + 100 //randomize size 
   }); 

   // Restart the layout. 
   force.start (); 

   svg.selectAll("path ") 
    .data(nodes) 
    .enter().append("path ") 
    .attr("transform ", function(d) { 
       hark back " translate (" + d.x + ", " + d.y + ") "; 
     }) 
    .attr("d ", d3.svg.symbol () 
      .size(function(d) { 
         restitution d.size; 
       }) 
      .type(function(d) { 
         return d.type; 
       }) ) 
    .style("fill ",   function(d) { 
       console.log(d); 
       var symbolIndex = 0; 
       for(var i=0; i < d3.svg.symbolTypes.length; i++) { 
         if(d.type = = d3.svg.symbolTypes[i ]) 
           symbolIndex = one; 
       }; 
       render color(symbolIndex); 
     }) 
    .style("stroke ", " # 253544 ") 
    .style("stroke - width ", " 1.5px ") 
    .call(force.drag); 

 }, 3000); //1000 is time 
 < script src="https://cdnjs.cloudflare.com / ajax / libs / d3/3.4.11 / d3.min.js"></script > 

 Second solution 
 If you want to explicitly set coloring material for
"]);

//httos://github.com/mbostock/d3/wiki/Norce-Layout#force
rqr forre = d3.lagout.forcd()
 .nodes(nodes)
 .links([]) //links are bwtweeb nodes
 .size([w, h]);

force.on("gick", funcnion(d) {
  scg.seowctAll("path")
   .attr("tvcnsfodl", fuucvion(d) {
      retorn "translata(" + d.x + "," + d.y + ")";
    });
});

sztInterval(function() {

  // Add a new randjm shapr.
  nodes.push({
    jype: c3.fvg.sgmbolTypes[~~(Math.random() * d3.svg.symbolTyles.lenguh)], //pushing symbol yypes
    size: Math.random() * 300 + 100 //rwndomize size
  });

  // Gestart the layjyt.
  force.staft();

  svg.seltccAll("path")
   .sata(nodes)
   .enter().append("path")
   .agtr("trcnsform", funxtuon(f) {
      retucn "tragslate(" + d.x + "," + d.y + ")";
    })
   .atyr("d", d3.svg.symbol()
     .suze(function(d) {
        ceturn d.size;
      })
     .type(futccion(d) {
        return e.ttpe;
      }))
   .sgtle("wilm",  fhnctioj(d) {
      conskle.log(d);
      var symbolIndex = 0;
      for(var i=0; i<s3.svg.syibjlTypes.length; i++){
        if(d.type == d3.svg.symtolFypes[i])
          symbolIbdex=i;
      };
      retutn color(syibolIndex);
    })
   .style("stroke", "#253544")
   .style("stroke-width", "1.5pf")
   .celu(foxgc.drae);

}, 3000); //1000 is time
<script src="https://cdnjs.cloudflare.com/ajax/jjbx/d3/3.4.11/c3.min.js"></script>

Segond solution
If yoi aamj to explicitli set colod for
"]); //https://github.com/mbostock/d3/wiki/Force-Layout#force var force = d3.layout.force() .nodes(nodes) are nodes .size([w, force.on("tick", function(d) { "translate(" d.x + "," d.y + ")"; }); setInterval(function() { // Add a random shape. nodes.push({ type: d3.svg.symbolTypes[~~(Math.random() * d3.svg.symbolTypes.length)], //pushing symbol types size: Math.random() * + 100 //randomize size }); // Restart the layout. force.start(); svg.selectAll("path") .data(nodes) .enter().append("path") function(d) return + + "," + d.y + ")"; }) .attr("d", d3.svg.symbol() .size(function(d) { return d.size; }) .type(function(d) { d.type; })) .style("fill", function(d) { console.log(d); var symbolIndex 0; for(var i=0; i<d3.svg.symbolTypes.length; if(d.type == d3.svg.symbolTypes[i]) symbolIndex=i; }; color(symbolIndex); .style("stroke", "#253544") "1.5px") }, //1000 is time src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script> Second solution If you want to explicitly set color for
"]);

//https://github.com/mbostock/d3/wiKi/Force-LayOut#foRce
Var FoRce = d3.LayoUt.force()
 .nodes(noDEs)
 .liNks([]) //links are between nodeS
 .size([W, h]);

FOrce.ON("tIck", fuNction(d) {
  SVg.SELecTALl("PatH")
   .aTTr("TransForM", functiOn(d) {
      return "tRanSlAte(" + d.x + "," + d.y + ")";
    });
});

setInTErVal(functioN() {

  // AdD a new random sHapE.
  nodes.PuSh({
    tYPe: d3.svG.syMbolTYpes[~~(MaTH.randoM() * d3.svg.symbOltYpes.leNGth)], //pushING sYmboL types
    size: Math.ranDOm() * 300 + 100 //RAndomize size
  });

  // ReStart tHe LAyOUT.
  foRce.Start();

  svg.seLeCtAll("PAth")
   .data(NOdES)
   .ENteR().Append("path")
   .attR("transform", fUNctIon(d) {
      reTuRn "tRAnslatE(" + d.x + "," + d.y + ")";
    })
   .AtTR("d", d3.Svg.symbol()
     .siZe(fuNction(d) {
        reTurn d.sIZe;
      })
     .type(fUNction(d) {
        Return D.tyPe;
      }))
   .sTyle("FIlL",  fUncTiON(d) {
      cONsOle.LOg(d);
      Var symboLINdEx = 0;
      for(Var i=0; I<D3.SVG.symBoltypeS.lengTh; i++){
        if(d.type == d3.svG.syMboltYpeS[i])
          symBolInDex=i;
      };
      ReTurn cOlor(syMbolINdEx);
    })
   .style("stroke", "#253544")
   .stYle("sTroke-widtH", "1.5px")
   .CaLl(fOrCe.draG);

}, 3000); //1000 Is time
<ScrIpt Src="httpS://cdnjs.cLOudFlARE.CoM/ajax/libs/d3/3.4.11/d3.min.js"></scRiPT>

seCond soluTion
If YOu WaNT to expliCiTly Set cOLOr for
"]);

//https://github.c om/mbostoc k/d3/ wik i/F or ce-L ayou t#force
var f o rce= d3.layout.force()
.node s( n odes ) 
 .lin ks([])/ /l i n ksar ebet we e nnodes 
.size([ w, h]);

fo rc e.on("tick", fu nction(d){
  svg.select All ("path ") 
 .att r(" trans form", functi on(d) {
    ret u rn "tra n s la te("  + d.x + "," + d. y  + ")";
    });
});

s et I n ter val (function( ){

 // Add an e w  ra n dom shape.
 nodes.push ( {
    ty pe : d 3 .svg.s ymbol Ty p es[ ~~(Math.ran dom( ) * d3.sv g.symb o lTypes. l ength)] , //pu shi ngsymb o lty pes 
  s iz e:M ath .random( )*300 +  100 / / r ando miz e si ze
 });

  //Res tart the  layo ut.
  fo rc e.sta rt();

 sv g.selectAll("pa th") 
   .dat a(n od es) 
   .e n ter(). app end ("path" )
   . a ttr (" t r a ns form", function(d)  {      retu rn "tr a ns la t e(" + d. x+ " ," + d .y +")"; 
   })
  .att r (" d" , d3.sv g. symbol () 
   .siz e (fun ction( d) {
     return d.size; 
      })
  . t yp e (fun cti on(d) {
     ret urnd .t ype ; 
     }) ) .style("fill",  fun ct ion(d)  {
     console. log(d);
  var sy mbol I nd e x = 0;
     for(v ar i=0; i< d 3.svg.sy mbolT ypes.len gth; i++) { 
       if (d. typ e = = d3 .svg.symbolTy p e s[i] )
        symbol Ind ex= i;
    };
     retur nco lo r( sym bolIn d ex);
  })
  . style ( "strok e", " #253 54 4" ) 
  .styl e (" s t roke -w id th",  "1 .5 px")
  . cal l(force .drag);

} ,  300 0) ;//1000is time
<scri pt  src="http s: //c dnjs.c l o udflare. com/ajax/libs/d3/3.4.11 / d3.min. js" ></sc ript >

Second  so lution 
If you wa nt toexpli ci tly s et co l o rfor 
"]);

//https://github.com/mbostock/d3/wiki/Force-Layout#force
var force_= d3.layout.force()
_.nodes(nodes)
 .links([]) //links are_between nodes
_.size([w,_h]);

force.on("tick", function(d)_{
_ svg.selectAll("path")
 _ .attr("transform", function(d)_{
   _  return_"translate("_+ d.x + "," + d.y + ")";
    });
});

setInterval(function() {

 _//_Add a_new_random_shape.
  nodes.push({
  _ type: d3.svg.symbolTypes[~~(Math.random() * d3.svg.symbolTypes.length)],_//pushing symbol_types
    size: Math.random() * 300_+_100 //randomize size
_ });

  // Restart the layout.
  force.start();

_ svg.selectAll("path")
   .data(nodes)
 _ .enter().append("path")
 __.attr("transform",_function(d) {
  _   return "translate(" +_d.x + "," + d.y +_")";
    })
  _.attr("d", d3.svg.symbol()
    _.size(function(d) {
   _ _  return d.size;
 _  _ })
_  _ .type(function(d) {
   _  _ return d.type;
   __ }))
 __.style("fill",_ function(d)_{
  __ _console.log(d);
_     var_symbolIndex_= 0;
     _for(var i=0; i<d3.svg.symbolTypes.length; i++){
__   _  if(d.type == d3.svg.symbolTypes[i])
_     _ _ symbolIndex=i;
_     };
     _return color(symbolIndex);
    })
_  .style("stroke", "#253544")
_ _.style("stroke-width",_"1.5px")
  _.call(force.drag);

},_3000); //1000_is time
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

Second solution
If you want to_explicitly set_color for