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OpenAQ
We fight air inequality through open data, open-source tools, and a global, grassroots community. Because data need a collaborative community for impact.

Our community has collected 268,691,455 air quality measurements from 8,589 locations in 67 countries. Data are aggregated from 110 government level and research-grade sources.
api  qualidade  air  georeferenciamento  data 
august 2018 by rtopitt
How I configure my watches (and bike computers) | DC Rainmaker
Dicas de setup das páginas e campos do Garmin para corrida, ciclismo e natação.
tip  garmin  cycling  running  swimming  how-to  review  gps  setup  data  metrics 
march 2016 by rtopitt
Top 10 data mining algorithms in plain English | rayli.net
Today, I’m going to explain in plain English the top 10 most influential data mining algorithms as voted on by 3 separate panels in this survey paper.

Once you know what they are, how they work, what they do and where you can find them, my hope is you’ll have this blog post as a springboard to learn even more about data mining.
ai  algorithm  data  data_mining  top10  geek  programming  reference  machine_learning 
june 2015 by rtopitt
Charted - Beautiful, automatic charts
Charted is a tool for automatically visualizing data, created by the
Product Science team at Medium. Give it the link to a data file and Charted returns a beautiful, shareable chart of the data.
analytics  data  csv  webapp  gráfico  estatística  javascript  inspiração  software_livre  dropbox  google  spreadsheet 
november 2014 by rtopitt
Falsehoods programmers believe about time: @noahsussman: Infinite Undo
I have repeatedly been confounded to discover just how many mistakes in both test and application code stem from misunderstandings or misconceptions about time. By this I mean both the interesting way in which computers handle time, and the fundamental gotchas inherent in how we humans have constructed our calendar — daylight savings being just the tip of the iceberg.

In fact I have seen so many of these misconceptions crop up in other people’s (and my own) programs that I thought it would be worthwhile to collect a list of the more common problems here.
boa_prática  erro  top10  modelagem  mito  tempo  data  hora  reference  tip  programming 
may 2014 by rtopitt
pickadate.js
The mobile-friendly, responsive, and lightweight jQuery date & time input picker.
javascript  jquery  plugin  data  hora  campo  html  webdesign  responsive  mobile  interface 
february 2014 by rtopitt
Working with time zones in Ruby on Rails — Elabs
Rails provides great tools for working with time zones but there’s still a lot of things that can go wrong. This blog post aims to shed some light on these gotchas and provide solutions to the most common problems.
rails  tempo  data  hora  timezone  utc  importante  teste  ruby  cheat_sheet  tip 
june 2013 by rtopitt
Evitando problemas com datas e time zones no Rails - Blog da HE:labs
Volta e meia passo por alguns problemas com time zones no Rails. Hoje, demonstrarei algumas dicas para evitá-los.
rails  tempo  data  hora  timezone  utc  importante  teste  ruby  tip 
june 2013 by rtopitt
Moment.js | Parse, validate, manipulate, and display dates in javascript.
A 5.5kb javascript date library for parsing, validating, manipulating, and formatting dates.
javascript  biblioteca  data  tempo  hora  parser  validação 
june 2013 by rtopitt
Datejs - An open-source JavaScript Date Library
Datejs is an open-source JavaScript Date Library.

Comprehensive, yet simple, stealthy and fast. Datejs has passed all trials and is ready to strike. Datejs doesn’t just parse strings, it slices them cleanly in two.

Datejs is released under the MIT License and available for download at GoogleCode.
javascript  data  calendário  biblioteca  software_livre  parser  tempo  hora 
may 2013 by rtopitt
Rails Time Comparisons: Devil, Details, etc. « tddium
Have you ever seen an error in your code where two timestamps that are the same fail a comparison test? The times being compared are the same. What gives?
gotcha  ruby  teste  rspec  tempo  hora  data  melhores_práticas  rails  tip 
april 2012 by rtopitt
Ruby Quicktips - Parse a string into a DateTime object. Controlled.
Just as you can format a string from a Time object with Time#strftime, you can also parse a string in a defined format into a DateTime or Date object, using DateTime#strptime or Date#strptime respectively (Date#strptime only creates a date without the time, though).
data  parser  ruby  formatação  formato  hora  string  tip 
april 2012 by rtopitt
Auto-detect timezones, time zone offsets and daylight saving in javascript - JavascriptKata
I had to work with timezone on the project I’m working on and I hate it. So I created jsKata.timezone to deal with them.
javascript  time_zone  biblioteca  data 
april 2012 by rtopitt
Jquery Full Calendar with Rails | Vinsol
“FullCalendar” provides a full-sized, drag & drop calendar. I decided to give it a try and utilize its hooks for user triggered events within our Rails application. This small effort resulted in a barebone Rails app that might provide a good base for your project which require calendar, scheduling or appointment features. I called it fullcalendar_rails and it is now available on github with a working demo.
ajax  javascript  jquery  plugin  rails  github  calendário  how-to  interface  importante  redmine  data 
april 2010 by rtopitt
FullCalendar - Full-sized Calendar jQuery Plugin
FullCalendar is a jQuery plugin that provides a full-sized, drag & drop calendar like the one below. It uses AJAX to fetch events on-the-fly for each month and is easily configured to use your own feed format (an extension is provided for Google Calendar). It is visually customizable and exposes hooks for user-triggered events (like clicking or dragging an event).
ajax  javascript  jquery  plugin  webdesign  calendário  importante  interface  redmine  callback  data 
april 2010 by rtopitt
Photojojo » The Perpetual Photo Wall Calendar
This is the best calendar we’ve ever seen. Seriously. It looks amazing on our wall and people are always complimenting us on it. And we can use it forever and ever and ever! Awesome.
calendário  data  decoração  diy  flickr  photo  photography 
may 2009 by rtopitt
My First Ruby/Rails Contribution: SmartMonth : Derek Perez
Plugin para Rails que facilita várias ações sobre datas baseadas em meses
data  mês  plugin  rails  utilidade 
may 2009 by rtopitt
SmartMonth
SmartMonth is a "bodysnatcher" plugin that takes boring Date month fixnums and replaces them with a rich toolkit of functionality.
api  data  rails  rdoc  ruby  tempo  utilidade 
may 2009 by rtopitt
icon creative : JSMask - Máscara em campo texto
Como anunciei no twitter, hoje a tarde criei um plugin para resolver alguns problemas que tínhamos com datas. Basicamente, precisávamos que os campos de datas do sistema tivessem uma máscara.
campo  data  formulário  javascript  máscara  plugin  rails 
may 2009 by rtopitt
Datetime Toolbocks - Intuitive Date Input Selection
The Datetime Toolbocks is a pure JavaScript library using DHTML and advanced date parsing to generate the date based on the grammar passed. The purpose of the Datetime Toolbocks is to simplify the date entering process using common terms we are all famili
campo  data  html  javascript  linguagem_natural  parser  plugin  rails 
may 2009 by rtopitt
Chronic - RDoc Documentation
Chronic is a natural language date/time parser written in pure Ruby.
data  gem  inglês  língua  natural  parser  projeto  ruby  translation 
may 2009 by rtopitt
Sexy Time Zones in Ruby on Rails with Timezone_Fu « Hack’d - Great Stuff for Web Hackers
Plugin para usar timezones em Rails, manendo as datas no banco em UTC e mostrando ao usuário o timezone correto automaticamente. As easy as has_timezone :fields => [ :start_datetime, :end_datetime].
data  how-to  plugin  rails  timezone  tz  utc 
may 2009 by rtopitt
Página principal - Lo dia internacional de hablarse portuñol
A última sexta-feira de Outubro é o dia em que todos os brasileiros devem utilizar este idioma maravilhoso em seus blogs e chats, no trabalho, na hora de caminhar, tomar café da manhã, ligar para a amante, enfim, todos os momentos deste dia devem esta
campanha  data  geek  hahaha  portunhol 
may 2009 by rtopitt
calendardateselect - Google Code
Calendar Date Select is a new(ish) "date and time picker", developed by Tim Harper, designed primarily for developers to use in Rails applications. It uses the standard Prototype JavaScript library, and is easily installed as a Rails plugin
calendário  css  data  formulário  html  javascript  plugin  prototype  rails  webdesign 
may 2009 by rtopitt
DHTML Site - 10 Free CSS and Javascript Calendars
Coleção de calendários com HTML e CSS gratuitos
calendário  css  data  html  top10  webapp  webdesign  tip 
may 2009 by rtopitt
Calendar scripts
A cross browser Javascript calendar.
calendário  data  grátis  html  javascript  webapp 
may 2009 by rtopitt
Datas amigáveis em português | Nome do Jogo
Como sobrescrever o helper distance_of_time_in_words do Rails para traduzí-lo para o português
data  hora  how-to  plugin  rails  ruby  tempo  tip  programming  translation 
may 2009 by rtopitt
Rails Date Kit
How to set a global display format for all your dates and how to input and validate dates with user friendly date formats using a date_field helper plus a lightweight JavaScript calendar control.
calendário  data  how-to  javascript  rails  ruby  webapp 
may 2009 by rtopitt
DateBocks - Intuitive Date Input Selection
Plugin / engine para Rails que permite uso simples do calendário javascript para input de data e hora, além de um parser javascript de língua natural para data e vice-versa
data  javascript  plugin  rails  programming 
may 2009 by rtopitt

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