Getting Started With Open Data
What you’ll need
- Internet access
- An up-to-date web browser (such as Google Chrome or Mozilla Firefox)
- A question you’re trying to answer about New York City
Let’s give it a try!
The following steps will show you how to make a simple map from the dataset of 311 Service Requests. 311 is New York City’s non-emergency call center that allows citizens to make service requests, file complaints, and get additional information about the City.
Your key resource: Data Dictionaries
Data can be complex. Some datasets contain millions of records and many unfamiliar terms. Be sure to review a dataset’s Primer page for additional information about a dataset, including its data dictionary. In the data dictionary, you’ll find definitions of terms and values.
Guidelines for the division of large datasets
In general, if you experience difficulty manipulating and downloading larger datasets, you should restrict the number of records that appear using the “filter” function. In this panel, users may “Add a New Filter Condition” and select attribute values that are exact matches with the “is” condition, or a fall within a range of values with the “contains” condition. A narrower selection of results will require less computing power to view and manipulate data, and will create smaller data files that are quicker to download onto a user’s local device. For more information on filtering tabular datasets, including video tutorials, see the “Filtering Datasets” topic in the Socrata Knowledge Base.
Tips & Tricks from the Learning about NYC Series:
Learning about NYC: Buildings
Want to dig deeper? The following blogs and technical resources offer guides on how to do advanced analytics with data on NYC Open Data. If you think we’ve missed anything, drop us a line!
- BetaNYC is a civic organization dedicated to improving lives in New York through civic design, technology, and data. They manage data.beta.nyc and host events to discuss Open Data.
- NYCityMap is targeted towards non-mapping professionals and provides a wealth of geographic-based information from the input of a single location.
- Resident Mario and IQuantNY are blogs by New York civic technologists featuring quantitative analyses of Open Data.
- NYC GitHub showcases New York City projects and code. GitHub is a version control system used by software developers and a repository for software projects created by developers using open source code.
- Data2go.nyc is a free, easy-to-use online mapping and data tool that brings together federal, state, and City data on a broad range of issues critical to the well-being of all New Yorkers.
Want to win that hackathon or build the next great Open Data app? Get started with Socrata APIs.
Socrata APIs provide rich query functionality through the “Socrata Query Language” (SoQL), which borrows heavily from Structured Query Language (SQL). Its paradigms should be familiar to developers who have worked with SQL and easy to learn for those who are new to it.
The “endpoint” of a SODA API is a unique URL that represents an object or collection of objects. Every Socrata dataset, and even every individual data record, has its own endpoint. The endpoint is what you’ll point your HTTP client at to interact with data resources.