JSPM – bigformulas@0.1.0

Package Exports

bigformulas

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Readme

Formulas

This code for everyone who need Collection formulas (likes mean, median, modus, etc) or Matrix function (like transpose, etc). This code used lodash.

How to use

This code build in nodejs.

Targeting dependencies to

teslacode/formulas.git

Require formulas

var Formulas = require('formulas');

Example

var Formulas = require('formulas');

// mean
data = [1, 2, 3, 4];
console.log(Formulas.mean(data) + ' => ' + 2.5);

Dictionary

max(data, options)

data: collection of data to calculated
options:
- key: if data an object give a string of key

data = [1, 2, 3];
console.log(Formulas.max(data));

data = [{num: 3}, {num: 1}, {num: 2}, {num: 1}];
console.log(Formulas.max(data, {key: 'num'}));

min(data, options)

data: collection of data to calculated
options:
- key: if data an object give a string of key

data = [1, 2, 3];
console.log(Formulas.min(data));

data = [{num: 3}, {num: 1}, {num: 2}, {num: 1}];
console.log(Formulas.min(data, {key: 'num'}));

mean(data, options)

data: collection of data to calculated
options:
- key: if data an object give a string of key
- isCounted: give a function to check data to calculated (default always true)

data = [1, 2, 3];
console.log(Formulas.min(data));

data = [{num: 3}, {num: 1}, {num: 2}, {num: 1}];
console.log(Formulas.min(data, {key: 'num'}));

data = [{num: 1}, {num: 2}, {num: 3}, {num: 4}];
console.log(Formulas.mean(data, {key: 'num', isCounted: function(item) {
  return item.num > 1;
}}) + ' => ' + 3);

median(data, options)

data: collection of data to calculated
options:
- key: if data an object give a string of key

data = [3, 1, 2, 4];
console.log(Formulas.median(data) + ' => ' + 2.5);

data = [{num: 4}, {num: 1}, {num: 2}, {num: 3}];
console.log(Formulas.median(data, {key: 'num'}) + ' => ' + 2.5);

modus(data, options)

data: collection of data to calculated
options:
- key: if data an object give a string of key
- isCounted: give a function to check data to calculated (default always true)

data = [1, 2, 2, 4];
console.log(Formulas.modus(data));

data = [{num: 3}, {num: 1}, {num: 2}, {num: 1}];
console.log(Formulas.modus(data, {key: 'num'}));

data = [{num: 3}, {num: 1}, {num: 2}, {num: 1}];
console.log(Formulas.modus(data, {key: 'num', isCounted: function(item) {
  return item.num > 1;
}}));

traspose(data)

data: collection of data to transpose

data = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12], [13, 14, 15, 16]];
console.log(Formulas.transpose(data));

data = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]];
console.log(Formulas.transpose(data));

lookup(data1, data2, options)

data1: collection of data source
data2: collection of data to lookup
options:
key1: key of data1 to be lookup
key2: key of data2 to be lookup
alias: alias of child to be stored in data1 if lookup (default 'child')
isEqual: function to be validated that data is founded (default isEqual from lodash)

var data1 = [{id: 1, name: 'Ade'}, {id: 2, name: 'Fruandta'}];
var data2 = [{id: 1, parentId: 1, favorite: true}, {id: 2, parentId: 3, favorite: false}];
console.log(Formulas.lookup(data1, data2, {
  key1: 'id',
  key2: 'parentId'
}));

data1 = [{id: 1, name: 'Ade'}, {id: 2, name: 'Fruandta'}];
data2 = [{id: 1, parentId: 3, favorite: true}, {id: 2, parentId: 2, favorite: false}];
console.log(Formulas.lookup(data1, data2, {
  key1: 'id',
  key2: 'parentId',
  alias: 'favorited',
  isEqual: function(item1, item2) {
    return item1 === item2;
  }
}));