Welcome to pydap

pydap is a Python implementation of the Data Access Protocol (DAP), also known as OPeNDAP. You can use pydap as a client to access thousands of scientific datasets in a transparent and efficient way through the internet, or you can set up pydap as a server to make your data available through the internet via an URL.

Why Pydap?

Pydap was originally developed in the mid to late 2000s, as a way to access data in OPeNDAP servers. See this talk by the original developer of PyDAP. Pydap was increadible successful, and widely used both as a client and server.

Since then, many more clients have been developed within the growing Python ecosystem, among them the hugely successful xarray and many of the Pangeo tools. Many people are not aware of but pydap is a backend engine for xarray to access OPeNDAP data, is installed everytime xarray gets installed. Over the last 10-15 years, OPeNDAP servers have gotten more sophisticated, and so continuing support for the development of pydap will benefit xarray/Pangeo users, by providing efficient access patterns to OPeNDAP servers.

Dive into the documentation to learn best practices for accessing remote data on OPeNDAP servers.

Quickstart

• How to install
• Get Started
• What’s New

Examples

• Basic Authentication
• ECCOv4 access via NASA’s EarthData in the Cloud
• PACE
• SWOT
• CMIP6

Documentation

• PyDAP as a client
• Responses
• Running a server
• Handlers

Guide for Developer

• The DAP data model
• Handlers
• Responses

Contributing

• Guide for new contributors
  • Guide to version control
  • Contributing to the code
  • Report Issues on GitHub
  • Contributing to the documentation