this is a proceedings of a conference on astronomical data analysis held in san diego, usa, on 2–3 august 2001. the conference was sponsored and published by spi-e, the international society for optical engineering. the content includes invited papers and sessions on various topics related to astronomical data analysis, including the virtual observatory, data flow systems, data analysis tools, and data sharing and collaboration. the first paper, "building the infrastructure for the virtual observatory," discusses the development of infrastructure for a virtual observatory. the second paper, "linking science analysis with observation planning," describes a full circle data lifecycle. the third paper, "code sharing and collaboration," presents experiences from the scientist's expert assistant project. the fourth paper, "interoperability tools for the virtual observatory," discusses tools for interoperability in the virtual observatory. session 6 focuses on autonomous agents and distributed computing environments, with papers on data flow systems for the very large telescope interferometer and data analysis with the chandra data model library. the poster session includes papers on source detection for the isocam parallel survey and cross-matching denis and 2mass point sources toward the magellanic clouds. the proceedings also include an addendum and an author index. the papers cover a wide range of topics in astronomical data analysis, including data management, data sharing, data analysis, and distributed computing.this is a proceedings of a conference on astronomical data analysis held in san diego, usa, on 2–3 august 2001. the conference was sponsored and published by spi-e, the international society for optical engineering. the content includes invited papers and sessions on various topics related to astronomical data analysis, including the virtual observatory, data flow systems, data analysis tools, and data sharing and collaboration. the first paper, "building the infrastructure for the virtual observatory," discusses the development of infrastructure for a virtual observatory. the second paper, "linking science analysis with observation planning," describes a full circle data lifecycle. the third paper, "code sharing and collaboration," presents experiences from the scientist's expert assistant project. the fourth paper, "interoperability tools for the virtual observatory," discusses tools for interoperability in the virtual observatory. session 6 focuses on autonomous agents and distributed computing environments, with papers on data flow systems for the very large telescope interferometer and data analysis with the chandra data model library. the poster session includes papers on source detection for the isocam parallel survey and cross-matching denis and 2mass point sources toward the magellanic clouds. the proceedings also include an addendum and an author index. the papers cover a wide range of topics in astronomical data analysis, including data management, data sharing, data analysis, and distributed computing.