javascript - Automated collision detection and rectification for a force directed wordcloud in D3.js -


i have been experimenting creating force directed layout using d3.js. in following code, populate series of objects later rendered text elements. wish avoid collision between words, , adjust representation on grid accordingly.

i utilised code written eric dobbs here http://bl.ocks.org/dobbs/1d353282475013f5c156 still not working me. objects end flying on screen. have spent many hours puzzling on , appreciate available.

here code

<!doctype html> <html> <head> <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> </head> <body>   <script>     //arguments passed in when class modularised     var metadataobject = {"type":"wordcloud","label":"data1","data":"data2","color":"color"};      var dataobject = {"data1":["apple","orange","pear","grapes","mango","papaya","kiwi","banana", "watermelon","strawberry","honeydew","dragonfruit","durian","pineapple","jackfruit","lychee","mangosteen","passionfruit","raspberry","blueberry","rockmelon","coconut","lemon","lime","pomelo","rambutan","aguave","longan","mandarin","calamansi","sugarcane","avocado","bittergourd","wintermelon","dates"],"data2":[100,50,150,40,70,60,30,35,95,120,60,70,80,15,30,140,100,170,200,40,90,20,180,99,66,55,130,20,50,55,100,120,30,20,90],"color":["#23af50"]};      //transform raw data     var frequency_list = transformdata(metadataobject, dataobject);     frequency_list.sort(function(a, b) {         return b.size-a.size;     });      //set cloud container variables     var cloudwidth = 600;     var cloudheight = 400;      var cloudcontainer = d3.select("body").append("svg")         .attr("width", cloudwidth)         .attr("height", cloudheight);      //set approximate scaling     var largestqty = d3.max(dataobject[metadataobject.data]);     var rangecap = cloudwidth*cloudheight/7500;      var scale = d3.scale.linear()         .domain([0, largestqty])         .range([5, rangecap]);      var color = d3.scale.linear()     .domain([0,1,2,3,4,5,6,10,15,20,30,largestqty])     .range(["#ddd", "#ccc", "#bbb", "#aaa", "#999", "#888", "#777", "#666", "#555", "#444", "#333", "#222"]);      var words = createtext(frequency_list);      var rendered = cloudcontainer.selectall("node")         .data(words)         .enter()           .append("text")             .attr("id", function(d, i) {               return "t"+i;             })             .text(function(d) {                 return d.text;             })             .attr("font-family", "sans-serif")             .attr("fill", function(d, i) {                 return color(i);             })              .attr("font-size", function(d) {                  return scale(d.size)+"px";             })             .on("mouseover", handlemouseover)             .on("mouseout", handlemouseout);      var force = d3.layout.force()       .nodes(words)       .size([cloudwidth, cloudheight])       .charge(-50)       .gravity(0.1)       .on("tick", tick)       .start();      rendered.call(force.drag);      function tick(e) {          var q = d3.geom.quadtree(words);         for(var i=0; i<words.length; i++) {             var word = words[i];             q.visit(collide(word));         }          // console.log(d.x2);         rendered         .attr("x", function(d) { return d.x; })         .attr("y", function(d) { return d.y; });     }      function collide(node) {       var nx1, nx2, ny1, ny2, padding;       padding = 32;       nx1 = node.x - padding;       nx2 = node.x2 + padding;       ny1 = node.y - padding;       ny2 = node.y2 + padding;       return function(quad, x1, y1, x2, y2) {         var dx, dy;         console.log(node.x2);         if (quad.point && (quad.point !== node)) {           if (overlap(node, quad.point)) {             dx = math.min(node.x2 - quad.point.x, quad.point.x2 - node.x) / 2;             node.x -= dx;             quad.point.x += dx;             dy = math.min(node.y2 - quad.point.y, quad.point.y2 - node.y) / 2;             node.y -= dy;             quad.point.y += dy;           }         }         return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1;       };     };      function overlap(a, b) {         return !(a.x2 < b.x ||                  a.x > b.x2 ||                  a.y2 < b.y ||                  a.y > b.y2);     }      function createtext(frequency_list) {         var words = [];         for(var wordindex=0; wordindex<frequency_list.length; wordindex++) {             var word = {                 x: math.random() * (cloudheight - 40) +20,                 y: math.random() * (cloudwidth -40) +20,                 text: frequency_list[wordindex].text,                 size: frequency_list[wordindex].size,                 // x2: word.x + word.text.length * word.size /1.5,                 // y2: word.y + scale(word.size) * 1.1             };             word.x2 = word.x + word.text.length * word.size /1.5;             word.y2 = word.y + scale(word.size) * 1.1;             words.push(word);         }         return words;     }      function transformdata(metadataobject, dataobject) {         //to transform data format:         // var frequency_list = [{"text":"apple","size":100}, {"text":"orange","size":100}, {"text":"pear","size":25}, {"text":"grapes","size":301}, {"text":"mango","size":56}];         var frequency_list = [];         var wordfieldname = metadataobject.label;         var valuesfieldname = metadataobject.data;         var wordlist = dataobject[wordfieldname];         var valueslist = dataobject[valuesfieldname];         for(var itemindex=0; itemindex<wordlist.length; itemindex++) {             var item = {                 text: wordlist[itemindex].touppercase(),                 size: valueslist[itemindex]             }             frequency_list.push(item);         }         return frequency_list;     }      function handlemouseover(d, i) {         d3.select(this).transition().attr({             fill: "black",             "font-size": scale(d.size) + 5 + "px"         });         cloudcontainer.append("text").attr({             id: "t" + d.text + "-" + d.size,             x: 10,             y:20         })         .text(function() {             return ["weight: " + d.size];             // return [""+occupiedspaces[1].top];         })     }      function handlemouseout(d, i) {         d3.select(this).transition().attr({             fill: color(i),             "font-size": scale(d.size) + "px"         });         d3.select("#t" + d.text + "-" + d.size).remove();     } </script> </body> </html>


-

Comments

Post a Comment

Popular posts from this blog

PySide and Qt Properties: Connecting signals from Python to QML -

i trying run simple pyside appliccation design made in qml. call function in qml python in separated thread. i have following qml view: import qt 4.7 rectangle { visible: true width: 100; height: 100 color: "lightgrey" text { id: datestr objectname: "datestr" x: 10 y: 10 text: "init text" font.pixelsize: 12 function updatedata(text) { datestr.text = qstr(text) console.log("you said: " + text) } } } here application: some imports.... #!/usr/bin/python import sys import time pyside import qtdeclarative, qtcore pyside.qtgui import qapplication pyside.qtdeclarative import qdeclarativeview the qthread worker.... #worker thread class worker(qtcore.qthread): updateprogress = qtcore.signal(int) def __init__(self, child): qtcore.qthread.__init__(self) self.child = child def run(self):
Read more

c# - DevExpress.Wpf.Grid.InfiniteGridSizeException was unhandled -

Image
when using devexpress, see error: devexpress.wpf.grid.infinitegridsizeexception unhandled message="by default, infinite grid height not allowed since grid rows rendered , hence grid work slowly. fix issue, should place grid container give finite height grid, or should manually specify grid's height or maxheight. note can avoid exception setting gridcontrol.allowinfinitegridsize static property true, in case grid run slowly." the problem dxgrid has infinite height. to fix, set height non-infinite. snoop absolutely invaluable this: if "height" xaml element infinite (i.e. 0 or nan ), can set using one of following: option 1: height="{binding path=actualheight, relativesource={relativesource mode=findancestor, ancestortype=uielement}}" option 2: verticalalignment="stretch" option 3: height="auto" hint: use verticalalignment="stretch" if child of grid <rowdefinition height=
Read more

scala - 'wrong top statement declaration' when using slick in IntelliJ -

Image
i'm porting project scala 2.9 2.10, therefore have use slick instead of scalaquery. i'm using slick 2.1.0 since supports ms access. according this tutorial , upgrade guide changed robs object class , added val robs : why error message wrong top statement declaration , how rid of it? edit: i'm new scala... according this question seems can't put val outside of methods or classes, right? code above directly in packge. right approach slick then? should move code in class or trait? according this changed val robs = tablequery[robs] to object robs extends tablequery(new robs(_)) {} . no warnings or errors anymore. :)
Read more