Chart (auto)
Let Dashdown infer the chart type from the columns instead of naming one. Opt in
with the auto flag:
<Chart auto data={downloads_by_month} />Rough heuristics: a time/category x with a numeric y → line or bar; two
numeric columns → scatter. You can still pass explicit x/y/series to guide
it. The auto flag is required — a bare <Chart data=… /> raises, so you never
get a surprise chart type.
From the semantic layer #
<Chart auto> also takes semantic metric refs instead of
data={query} — it infers the type from the resolved metric/by/series
shape just as it does from query columns:
<Chart auto metric={sales.revenue} by={sales.region} />Attributes #
| Attribute | Purpose |
|---|---|
auto |
Required flag — opts into type inference (<Chart auto … />). |
data |
Required. The query to plot (data={query}). |
x · y · series |
Optional — provide them to guide the inferred chart instead of letting columns decide. |
title |
Chart title. |
color |
Single color or comma-separated palette override. |
height |
Pixel height (default 300). |
col-span |
Columns to span inside a <Grid>. |
format · currency · decimals · locale · date_format |
Value & tooltip number/date formatting. |
empty_message |
Text shown when the query returns no rows. |
auto is unique to <Chart>; everything else is shared with the typed charts — see Charts.