[1] Altair Visualizations
As no one visualization is ideal for every purpose, the appropriate visualization for the analytical task at hand must be used. Here are some general recommendations:
| Analytical Task | Recommended Visualizations |
| Read numeric values quickly | Table / Pivot Table |
| Performance against a KPI | Bullet Graph, Tile, Ticker Tile, Donut Gauge |
| Performance across a single variable for a small number of data elements, with different magnitudes |
Bar Graph, Tile, Ticker Tile |
| Performance across a single variable for a small number of data elements, each with similar magnitudes |
Dot Plot |
| Performance across a single variable for a large number of data items | Heat Map |
| Performance across a single variable for a large number of data items, which have different importance values |
Treemap, Circle Pack |
| Performance across a hierarchical or grouped dataset | Treemap, Circle Pack |
| Correlation between two categories of data | Heat Matrix, Network Graph |
| Relationships between categories of data | Network Graph |
| Correlation between two or more numeric data columns | Scatter Plot |
| Geographic correlations of data | Map Plot Geographic Scatter Plot |
| Correlation over both a single numeric data column and various categories of data | Dot Plot |
| Trending performance across ordered categories | Dot Plot |
| Trending performance between two numeric variables | Numeric Line Graph |
| Trending performance between three numeric variables | Surface Plot (& 3D) |
| Trending performance across time | Line Graph |
| Time based Ranking | Line Graph with Ranking Axis |
| Time Based Contributions | Stack Graph |
| Time Based Correlations between time series | Horizon Graph |
| Time Based Transactions | Needle Graph |
| Financial Time Series Distributions | Candle Stick or OHLC Graph |
| Auction Price & Interest/Volume Distribution | Numeric Needle Graph |
| Geospatial Area Densities | Shapes |
| Spread between two time series | Spread Graph |
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