ApexChart

Introduction

Apexchart is a widget in Supervisely that allows for displaying interactive charts on the UI. It supports various chart types such as line, area, and bar. Users can customize the chart by changing the chart type, color schemes, and legend location.

It also provides functionality for data streaming and dynamic updates, allowing the chart to display real-time data. The data can be passed to the chart in the form of a pandas dataframe or a Python list of dictionaries. Additionally, users can control the chart through Python code by detecting events such as clicking on a data point or hovering over a chart element.

Function signature

size1 = 10
x1 = list(range(size1))
y1 = np.random.randint(low=10, high=148, size=size1).tolist()
s1 = [{"x": x, "y": y} for x, y in zip(x1, y1)]

size2 = 30
x2 = list(range(size2))
y2 = np.random.randint(low=0, high=300, size=size2).tolist()
s2 = [{"x": x, "y": y} for x, y in zip(x2, y2)]

apexchart = Apexchart(
    series=[{"name": "Max", "data": s1}, {"name": "Denis", "data": s2}],
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product Trends by Month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    type="line",
)

Parameters

Type

Description

series

list

List of series including names and lists of X, Y coordinates

options

dict

Chart options for customizing styles

type

str

Type of chart (line, bar, area)

height

Union[int, str]

Widget height

sly_options

dict

Additional options used in supervisely component

series

List of series including names and lists of X, Y coordinates

type: list

apexchart = Apexchart(
    series=[{"name": "Max", "data": s1}, {"name": "Denis", "data": s2}],
    # options=...
    # type=...
)

options

Chart options for customizing styles

type: dict

apexchart = Apexchart(
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product Trends by Month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    # series=...,
    # type=...
)

type

Type of chart. It supports following chart types: line, area, bar.

type: str

apexchart = Apexchart(
    series=[{"name": "Max", "data": s1}, {"name": "Denis", "data": s2}],
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product Trends by Month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    type="line",
)

apexchart = Apexchart(
    series=[{"name": "Max", "data": s1}, {"name": "Denis", "data": s2}],
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product Trends by Month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    type="area",
)

apexchart = Apexchart(
    series=[{"name": "Max", "data": s1}, {"name": "Denis", "data": s2}],
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product Trends by Month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    type="bar",
)

height

Widget height

type: Union[int, str]

default value: "300"

apexchart = Apexchart(
    # series=...,
    # options=...,
    # type=...,
    height="500"
)

sly_options

Additional options used in supervisely component.

type: dict

Methods and attributes

Attributes and Methods

Description

get_clicked_value()

Get value of clicked datapoint.

get_clicked_datapoint()

Get clicked datapoint.

set_title(title: str, send_changes: bool = True)

Set chart title.

add_series(name: str, x: list, y: list, send_changes: bool = True)

Add new series to chart.

set_series(series: list, send_changes: bool = True)

Set series to chart.

set_colors(colors: List[str or List[int]], send_changes: bool = True)

Set colors for series in chart (str, RGB or HEX).

add_to_series(name_or_id: str or int, data: List[tuple] or List[dict] or tuple or dict], send_changes: bool = True)

Add data to exist series.

get_series_by_name(name: str)

Return series data by name.

@click

Decorator function to handle chart click.

Mini App Example

You can find this example in our GitHub repository:

ui-widgets-demos/charts and plots/003_apex_chart/src/main.py

Import libraries

import os

import numpy as np
import supervisely as sly
from dotenv import load_dotenv
from supervisely.app.widgets import Apexchart, Card

Init API client

First, we load environment variables with credentials and init API for communicating with Supervisely Instance:

load_dotenv("local.env")
load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api()

Prepare series for chart

size1 = 22
x1 = list(range(size1))
y1 = np.random.randint(low=10, high=180, size=size1).tolist()
s1 = [{"x": x, "y": y} for x, y in zip(x1, y1)]

size2 = 30
x2 = list(range(size2))
y2 = np.random.randint(low=0, high=300, size=size2).tolist()
s2 = [{"x": x, "y": y} for x, y in zip(x2, y2)]

apexchart = Apexchart(
    series=[{"name": "Fred", "data": s1}, {"name": "Harry", "data": s2}],
    options={
        "chart": {"type": "line", "zoom": {"enabled": False}},
        "dataLabels": {"enabled": False},
        "stroke": {"curve": "smooth", "width": 2},
        "title": {"text": "Product sales by month", "align": "left"},
        "grid": {"row": {"colors": ["#f3f3f3", "transparent"], "opacity": 0.5}},
        "xaxis": {"type": "category"},
    },
    type="line",
)

Create app layout

Prepare a layout for app using Card widget with the content parameter.

info_text = Text(status="info")
card = Card(title="Apexchart", content=Container([apexchart, info_text]))

Create app using layout

Create an app object with layout parameter.

app = sly.Application(layout=card)

Add functions to control widgets from python code

@apexchart.click
def show_info(datapoint: sly.app.widgets.Apexchart.ClickedDataPoint):
    x = datapoint.x
    y = datapoint.y
    name = datapoint.series_name
    info_text.text = f"On May {x}, {name} has sold {y} units of the product."
    if int(y) > 160:
        info_text.status = "success"
    elif int(y) < 50:
        info_text.status = "error"
    else:
        info_text.status = "info"