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Mosaic

Mosaic is a framework for linking data visualizations, tables, input widgets, and other data-driven components, while leveraging a database for scalable processing. With Mosaic, you can interactively visualize and explore millions and even billions of data points.

The Mosaic Jupyter Widget | Mosaic (uwdata.github.io) is built on top of AnyWidget and works with Panel


# pip install panel pandas ipywidgets_bokeh mosaic-widget
import pandas as pd
from mosaic_widget import MosaicWidget

weather = pd.read_csv(
    "https://uwdata.github.io/mosaic-datasets/data/seattle-weather.csv",
    parse_dates=["date"],
)

specification = {
    "meta": {
        "title": "Seattle Weather",
        "description": "An interactive view of Seattle’s weather, including maximum temperature, amount of precipitation, and type of weather. By dragging on the scatter plot, you can see the proportion of days in that range that have sun, fog, drizzle, rain, or snow.\n",
        "credit": "Based on a [Vega-Lite/Altair example](https://vega.github.io/vega-lite/examples/interactive_seattle_weather.html) by Jake Vanderplas.",
    },
    "params": {
        "click": {"select": "single"},
        "domain": ["sun", "fog", "drizzle", "rain", "snow"],
        "colors": ["#e7ba52", "#a7a7a7", "#aec7e8", "#1f77b4", "#9467bd"],
    },
    "vconcat": [
        {
            "hconcat": [
                {
                    "plot": [
                        {
                            "mark": "dot",
                            "data": {"from": "weather", "filterBy": "$click"},
                            "x": {"dateMonthDay": "date"},
                            "y": "temp_max",
                            "fill": "weather",
                            "r": "precipitation",
                            "fillOpacity": 0.7,
                        },
                        {
                            "select": "intervalX",
                            "as": "$range",
                            "brush": {"fill": "none", "stroke": "#888"},
                        },
                        {
                            "select": "highlight",
                            "by": "$range",
                            "fill": "#ccc",
                            "fillOpacity": 0.2,
                        },
                        {"legend": "color", "as": "$click", "columns": 1},
                    ],
                    "xyDomain": "Fixed",
                    "xTickFormat": "%b",
                    "colorDomain": "$domain",
                    "colorRange": "$colors",
                    "rDomain": "Fixed",
                    "rRange": [2, 10],
                    "width": 680,
                    "height": 300,
                }
            ]
        },
        {
            "plot": [
                {
                    "mark": "barX",
                    "data": {"from": "weather"},
                    "x": {"count": None},
                    "y": "weather",
                    "fill": "#ccc",
                    "fillOpacity": 0.2,
                },
                {
                    "mark": "barX",
                    "data": {"from": "weather", "filterBy": "$range"},
                    "x": {"count": None},
                    "y": "weather",
                    "fill": "weather",
                    "order": "weather",
                },
                {"select": "toggleY", "as": "$click"},
                {"select": "highlight", "by": "$click"},
            ],
            "xDomain": "Fixed",
            "yDomain": "$domain",
            "yLabel": None,
            "colorDomain": "$domain",
            "colorRange": "$colors",
            "width": 680,
        },
    ],
}
mosaic = MosaicWidget(specification, data={"weather": weather})

# THE PANEL APP

import panel as pn

pn.extension("ipywidgets")

component = pn.panel(mosaic, sizing_mode="stretch_width")

pn.template.FastListTemplate(
    logo="https://panel.holoviz.org/_static/logo_horizontal_dark_theme.png",
    title="Works with MosaicWidget",
    main=[component],
).servable()
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