Chart as Image - service using go-chart and go-charts.

Quick Setup: Easy setup. Add charts as images in markdown, emails etc.

Hassle Free: Create charts as images with single URL.

Supports: Choose from Line, bar, donut, pie, scatter, bubble, stacked bar, etc.

Lightweight: Written in Go. No external dependencies. Download and self-host binary.

API Documentation Restful API with image/png response.

• API
  • GET /line
  • GET /bar
  • GET /donut
  • GET /pie
  • GET /radar
  • GET /funnel
  • GET /table
• Self Hosting
• CHANGE LOG

API

Common Queries	Required	Type	Default	Description
data	◯	string		JSON Format
title		string
subtitle		string
theme		string	light	light or dark
metric		string
height		int	768
width		int	1024
output		string	png	png or svg

GET /line

Query	Required	Type	Default	Description
line		string	fill	fill or nofill
grid		string	show	show or hide

data	Required	Type
x	◯	[]string
y	◯	[][]int
names		[]string

/line?title=Line+Chart
&subtitle=Sleeping+Hours
&data={
    "x": ["Mon","Tue","Wed"],
    "y": [[4,8,7], [10,20,24]],
    "names": ["Sleeping", "Awake"]
}

/line?title=Area+Chart
&subtitle=Sleeping+Hours
&fill=true
&data={
    "x": ["Mon","Tue","Wed"],
    "y": [[4,8,7], [10,20,24]],
    "names": ["Sleeping", "Awake"]
}

GET /bar

Extra params for bar chart.

Query	Required	Type	Default	Validation
style		string	vertical	vertical or horizontal
grid		string	show	show or hide

data	Required	Type	Description
x	◯	[]string
y	◯	[][]int
z		[]string	Style will be vertical with z is given

/bar?title=Bar+Chart
&subtitle=Sleeping+hours
&data={
    "x": ["Monday", "Friday", "Sunday"],
    "y": [[8,2,14]],
    "names": ["Sleeping", "Awake"]
}

/bar?title=Bar+Chart
&subtitle=Sleeping+hours
&metric=hours
&theme=dark
&data={
    "x": ["Monday", "Friday", "Sunday"],
    "y": [[8,2,14]],
    "z": [[9,3,15]],
    "names": ["Sleeping", "Awake"]
}

GET /donut

data	Required	Type
names	◯	[]string
values	◯	[]int

/donut?title=Donut+Chart
&data={
    "names": ["Monday", "Friday", "Saturday", "Sunday"],
    "values": [4, 6 ,7, 9]
}

GET /pie

data	Required	Type
names	◯	[]string
values	◯	[]int

/pie?title=Pie+Chart
&subtitle=Sleeping+Hours
&data={
    "names": ["Monday", "Friday", "Saturday", "Sunday"],
    "values": [4, 6 ,7, 9]
}

GET /radar

data	Required	Type	Validation
names	◯	[]string	>=3
values	◯	[][]int	count(names) == count(values[0])
labels		[]string

/radar?title=Radar+Chart
&data={
    "names": ["Mon","Tue", "Wed", "Fri"],
    "labels": ["Work", "Relax", "Travel"],
    "values": [[1,2,3,4], [15,7,8,9], [15,17,5,7]]
}

GET /funnel

data	Required	Type
names	◯	[]string
values	◯	[]int

/funnel?title=Radar+Chart
&data={
    "names": ["Mon","Tue", "Thu", "Fri", "Sat", "Sun"],
    "values": [100,80,60,40,20,10]
}

GET /table

data	Required	Type	Description
names	◯	[]string	aka header
values	◯	[][]string	aka rows

/table?title=Table+Chart
&data={
    "names": ["Branch","Code Coverage", "Quality"],
    "values": [["master","80","90"], ["develop","70","79"]]
}

Self Hosting

curl -sLk https://raw.githubusercontent.com/kevincobain2000/instachart/master/install.sh | sh
## Will run server on localhost:3001
# For more options see --help
./instachart

CHANGE LOG

• v1.0.0 - Initial release with line, bar, donut, pie, radar.
• v1.0.1 - Bug fixes and code refactor.
• v1.0.2 - funnel charts and table as image.
• v1.0.3 - Fixes a few padding issues.
• v1.0.4 - Adds / for frontend. And Installation instructions for self-hosting.
• v1.0.5 - Frontend page with examples.
• v1.0.6 - Code improvements and bug fixes.
• v1.0.7 - Adds trends for bar charts.
• v1.0.8 - Adds support for svg charts.
• v1.0.9 - Validations improvements.
• v1.0.11 - No LP on release version.
• v1.0.14 - Support mini
• v1.0.15 - Do not show grids on mini charts