Dominik Moritz

Python API

13

Design and develop a Python API for generating Mosaic specifications. Similar in spirit to [Vega-Altair](https://altair-viz.github.io/), the Python API should enable programmatic construction of a Mosaic JSON specification and enable easy...

Query Parsing and Analysis

3

Currently query analysis is only possible when using Mosaic’s SQL builder methods, which maintain a structured representation of the query. While arbitrary query expressions are allowed, they are not analyzed....

Given a Mosaic YAML/JSON specification for one or more static views, analyze the spec and automatically add appropriate interactions, for example to support linked selections, highlighting, or tooltips. Some inspiration...

Some aspects of our selection abstraction may be the result of ad hoc design. The goal of this project would be to develop a full formal semantics for Mosaic’s selection...

Currently the Table component and the RasterTile mark leverage the Coordinator’s prefetch method to speculatively issue queries ahead of time and cache the results for future use. One next step...

Improved Sampling Support

1

For large datasets, sampling is a valuable strategy for creating smaller datasets that can be visualized and filtered much more rapidly. Mosaic supports sampling indirectly, as one can create a...

Towards #18

Flights 3m only has 200k rows

1

https://github.com/vega/vega-datasets/blob/main/data/flights-3m.csv seems to only have 200k rows. ``` wc -l flights-3m.csv 231084 flights-3m.csv ``` Added in https://github.com/vega/vega-datasets/commit/1e70098e5c15069314a1be82a37c82c0fbb5f66f by @arvind