d3.js Tag Cloud size from a Json/array?

d3.js, json, word-cloud

Solution

Try d3.zip: `d3.zip(jWord, jCount)` returns a merged array where the first element is the text and size of the first word `[jWord[0], jCount[0]]`, the second element is the second word, and so on. For example:

.words(d3.zip(jWord, jCount).map(function(d) {
  return {text: d[0], size: d[1]};
}))

In effect, d3.zip turns column-oriented data into row-oriented data. You could also just represent your data in row-oriented form to begin with:

var words = [
  {text: "abc", size: 2},
  {text: "def", size: 5},
  {text: "ghi", size: 3},
  {text: "jkl", size: 8}
];

Lastly, watch out with types. Your counts are represented as strings (`"2"`) rather than numbers (`2`). So you might want to use `+` to coerce them to numbers.

Problem

I am modifying this code: https://github.com/jasondavies/d3-cloud ``` <script> d3.layout.cloud().size([300, 300]) .words([ "Hello", "world", "normally", "you", "want", "more", "words", "than", "this"].map(function(d) { return {text: d, size: 10 + Math.random() * 90}; })) .rotate(function() { return ~~(Math.random() * 2) * 90; }) .fontSize(function(d) { return d.size; }) .on("end", draw) .start(); function draw(words) { d3.select("body").append("svg") .attr("width", 300) .attr("height", 300) .append("g") .attr("transform", "translate(150,150)") .selectAll("text") .data(words) .enter().append("text") .style("font-size", function(d) { return d.size + "px"; }) .attr("text-anchor", "middle") .attr("transform", function(d) { return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")"; }) .text(function(d) { return d.text; }); } </script> ``` I'd like to get the word and size data from separate JSON data. I have two variables ``` jWord = ["abc","def","ghi,"jkl"]; jCount = ["2", "5", "3", "8"]; ``` jWord has the words that I want to display in the tag clouds. jCount is the size of the corresponding word (same order). I switched to the word to jWord, but not sure how to switch the size part in ``` .words(jWord.map(function(d) { return {text: d, size: 10 + Math.random() * 90}; })) ``` I also have another Json format variable. ``` jWord_Count = ["abc":2, "def":5, "ghi":3, "jkl":8 ]; ``` If this format helps.

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