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Tim Stallard 2017-03-12 21:22:43 +00:00
parent 66d7f0ae46
commit 1abe239fa0
1 changed files with 11 additions and 11 deletions
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22
src/blocks/frequency.js
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@ -3,15 +3,15 @@ var events = require("../events.js");
function getGroups(text, size){ function getGroups(text, size){
return text return text
.toLowerCase() .toLowerCase()
.split(/[^a-z]/) .split(/[^a-z]/) //split on any non a-z character to get words
.map((word)=>{ .map((word)=>{ //turn each word into all size-length groups
groups = [] groups = []
for(var i = 0; i <= (word.length - size); i++){ for(var i = 0; i <= (word.length - size); i++){
groups.push(word.substr(i, size)); groups.push(word.substr(i, size));
} }
return groups; return groups;
}) })
.reduce((allGroups, groups)=>( .reduce((allGroups, groups)=>( //merge these groups
allGroups.concat(groups) allGroups.concat(groups)
), []); ), []);
} }
@ -19,15 +19,15 @@ function getGroups(text, size){
function getFirstLetters(text){ function getFirstLetters(text){
return text return text
.toLowerCase() .toLowerCase()
.split(/[^a-z]/) .split(/[^a-z]/) //split on any non a-z character to get words
.filter((word)=>(word.length > 0)) .filter((word)=>(word.length > 0)) //filter out zero length words
.map((word)=>(word[0])); .map((word)=>(word[0])); //return first char
} }
function getFrequency(groups){ function getFrequency(groups){
return groups return groups
.reduce((frequencies, group)=>{ .reduce((frequencies, group)=>{
if(!frequencies[group]){ if(!frequencies[group]){ //add to object if not already present
frequencies[group] = 0; frequencies[group] = 0;
} }
frequencies[group] += 1; frequencies[group] += 1;
@ -37,11 +37,11 @@ function getFrequency(groups){
function topGroupsByFrequency(groups, alreadyPercentage){ function topGroupsByFrequency(groups, alreadyPercentage){
var output = {}; var output = {};
var total = Object.values(groups).reduce((a, b)=>(a + b)); output.labels = Object.keys(groups).sort((a, b)=>(groups[b] - groups[a])).slice(0, 26); //get top 26 titles by key
output.labels = Object.keys(groups).sort((a, b)=>(groups[b] - groups[a])).slice(0, 26);
output.values = output.labels.map((groupName)=>(groups[groupName])); output.values = output.labels.map((groupName)=>(groups[groupName]));
if(!alreadyPercentage){ if(!alreadyPercentage){
output.values = output.values.map((value)=>(value / total * 100)); //calculates as percentage of whole thing var total = Object.values(groups).reduce((a, b)=>(a + b));
output.values = output.values.map((value)=>(value / total * 100)); //calculates as percentage of all items
} }
return output; return output;
} }
@ -67,7 +67,7 @@ module.exports = {
$(block.elem).data("chartTop").data.datasets[0].data = topGroups.values; $(block.elem).data("chartTop").data.datasets[0].data = topGroups.values;
$(block.elem).data("chartTop").update(); $(block.elem).data("chartTop").update();
}, },
size: { //update static widths in HTML as well size: { //if you change this, update static widths in HTML as well
height: 400, height: 400,
width: 400 width: 400
}, },