Radar Chart
A radar chart shows multivariate data of three or more quantitative variables mapped onto an axis.
Simple Example
For a radar chart we must define an rx.recharts.radar() component for each set of values we wish to plot. Each rx.recharts.radar() component has a data_key which clearly states which variable in our data we are plotting. In this simple example we plot the A column of our data against the subject column which we set as the data_key in rx.recharts.polar_angle_axis.
def radar_simple():
return rx.recharts.radar_chart(
rx.recharts.radar(
data_key="A",
stroke="#8884d8",
fill="#8884d8",
),
rx.recharts.polar_grid(),
rx.recharts.polar_angle_axis(data_key="subject"),
rx.recharts.polar_radius_axis(
angle=90, domain=[0, 150]
),
data=data,
width="100%",
height=300,
)Multiple Radars
We can also add two radars on one chart by using two rx.recharts.radar components.
In this plot an inner_radius and an outer_radius are set which determine the chart's size and shape. The inner_radius sets the distance from the center to the innermost part of the chart (creating a hollow center if greater than zero), while the outer_radius defines the chart's overall size by setting the distance from the center to the outermost edge of the radar plot.
def radar_multiple():
return rx.recharts.radar_chart(
rx.recharts.radar(
data_key="A",
stroke="#8884d8",
fill="#8884d8",
),
rx.recharts.radar(
data_key="B",
stroke="#82ca9d",
fill="#82ca9d",
fill_opacity=0.6,
),
rx.recharts.polar_grid(),
rx.recharts.polar_angle_axis(data_key="subject"),
rx.recharts.polar_radius_axis(
angle=90, domain=[0, 150]
),
rx.recharts.legend(),
data=data,
inner_radius="15%",
outer_radius="80%",
width="100%",
height=300,
)Using More Props
The dot prop shows points at each data vertex when true. legend_type="line" displays a line in the chart legend. animation_begin=0 starts the animation immediately, animation_duration=8000 sets an 8-second animation, and animation_easing="ease-in" makes the animation start slowly and speed up. These props control the chart's appearance and animation behavior.
def radar_start_end():
return rx.recharts.radar_chart(
rx.recharts.radar(
data_key="A",
dot=True,
stroke="#8884d8",
fill="#8884d8",
fill_opacity=0.6,
legend_type="line",
animation_begin=0,
animation_duration=8000,
animation_easing="ease-in",
),
rx.recharts.polar_grid(),
rx.recharts.polar_angle_axis(data_key="subject"),
rx.recharts.polar_radius_axis(
angle=90, domain=[0, 150]
),
rx.recharts.legend(),
data=data,
width="100%",
height=300,
)Dynamic Data
Chart data tied to a State var causes the chart to automatically update when the state changes, providing a nice way to visualize data in response to user interface elements. View the "Data" tab to see the substate driving this radar chart of character traits.
Strength
15
Dexterity
15
Constitution
15
Intelligence
15
Wisdom
15
Charisma
15
Remaining points: 10
class RadarChartState(rx.State):
total_points: int = 100
traits: list[dict[str, Any]] = [
dict(trait="Strength", value=15),
dict(trait="Dexterity", value=15),
dict(trait="Constitution", value=15),
dict(trait="Intelligence", value=15),
dict(trait="Wisdom", value=15),
dict(trait="Charisma", value=15),
]
@rx.var
def remaining_points(self) -> int:
return self.total_points - sum(
t["value"] for t in self.traits
)
@rx.var(cache=True)
def trait_names(self) -> list[str]:
return [t["trait"] for t in self.traits]
def set_trait(self, trait: str, value: int):
for t in self.traits:
if t["trait"] == trait:
available_points = (
self.remaining_points + t["value"]
)
value = min(value, available_points)
t["value"] = value
break
def radar_dynamic():
return rx.hstack(
rx.recharts.radar_chart(
rx.recharts.radar(
data_key="value",
stroke="#8884d8",
fill="#8884d8",
),
rx.recharts.polar_grid(),
rx.recharts.polar_angle_axis(data_key="trait"),
data=RadarChartState.traits,
),
rx.vstack(
rx.foreach(
RadarChartState.trait_names,
lambda trait_name, i: rx.hstack(
rx.text(trait_name, width="7em"),
rx.slider(
default_value=RadarChartState.traits[
i
][
"value"
].to(
int
),
on_change=lambda value: RadarChartState.set_trait(
trait_name, value
),
width="25vw",
),
rx.text(
RadarChartState.traits[i]["value"]
),
),
),
rx.text(
"Remaining points: ",
RadarChartState.remaining_points,
),
),
width="100%",
height="15em",
)API Reference
rx.recharts.RadarChart
A Radar chart component in Recharts.
Valid Children
PolarAngleAxisPolarRadiusAxisPolarGridLegendGraphingTooltipRadar