Heatmap and calendar
The Heatmap and calendar family contains 12 renderer-backed chart variants. Use this page as the entry point for choosing the right variant, then open the variant page for the screenshot, data shape, Rust API notes, and example code.
The chart family is still ordinary Fission UI. Each variant is constructed from typed Rust data, participates in layout and theme decisions, and can be driven by app state, reducers, resources, jobs, or services just like any other widget.
Variants
Chart | Data shape | Use when |
|---|---|---|
Matrix value triples. | Use it for SRE and operations dashboards. | |
Date/value pairs. | Use it for engineering operations. | |
Matrix value triples. | Use it for relationship strength matrices. | |
Date/value pairs. | Use it for reliability and support reporting. | |
Dense matrix value triples. | Use it for activity grids with many columns. | |
Date/value pairs. | Use it for contribution and activity patterns. | |
Matrix value triples. | Use it for capacity and utilization panels. | |
Date/value pairs. | Use it for habit and retention surfaces. | |
Matrix value triples. | Use it for risk and priority matrices. | |
Matrix value triples. | Use it for dashboards with limited space. | |
HeatmapSeries plus VisualMap. | Use it when color needs a visible numeric range. | |
x index, y index, value triples. | Use it for operational intensity matrices. |
Choosing within this family
Start with the user's question, not the visual effect. Pick the simplest variant that makes the answer clear, add interaction only when it reduces work for the user, and keep animation purposeful enough that it explains a change rather than decorating the page.
Authoring from a Fission component
Use this reference page as the chart expression inside ordinary Fission component conversion. The chart is a Widget, so it can sit inside a Card, Grid, Scroll, responsive page section, or any other layout container.
use fission::prelude::*;
use fission::charts::{Axis, Chart, LineSeries};
pub struct HeatmapAndCalendarChart;
impl From<HeatmapAndCalendarChart> for Widget {
fn from(_: HeatmapAndCalendarChart) -> Widget {
Chart::new()
.title("Heatmap and calendar")
.x_axis(Axis::category(vec!["A", "B", "C"]))
.y_axis(Axis::value())
.series(vec![LineSeries::new("Series").data(vec![1.0, 2.0, 3.0]).into()])
.into()
}
}
Keep expensive data loading outside component conversion. A reducer, job, service, or server route should prepare the typed chart data, then the component should read that state and construct the chart deterministically.
Options, accessibility, and diagnostics
Area | What to decide | How to verify |
|---|---|---|
Data shape | Keep source rows in typed Rust structs, then map them into the series type shown in the example. | Unit test the mapping separately from rendering. |
Options | Choose axes, legends, labels, animation, and interaction based on the user's task. | Add a screenshot test when changing visual behavior. |
Accessibility | Provide a clear title and adjacent summary text for important trends or outliers. | Inspect the generated semantics and make sure the chart is understandable without color alone. |
Failure handling | Render an empty, loading, or error state before constructing the chart if data is unavailable. | Test empty data, partial data, and failed fetches. |
Performance | Prefer summarized or windowed data for very large datasets; keep full raw history in the data layer. | Profile frame time and interaction latency with representative data volumes. |
Fission
A cross-platform, GPU-accelerated user interface framework for Rust. MIT licensed.
Copyright (c) 2026 Fission
Ready to use today. Widget APIs are expected to remain stable; some runtime and shell APIs may change before 1.0.0.
Fission 0.7.0