highcharts-loader

It is a small library that can load charts from highcharts on server side. After loading chart you can save it to file or embed it into your html page in base64 format.

from highcharts_loader import ChartLoader, Options

options = Options(from_file='options.json')
chart = ChartLoader(options)
# save to file
chart.save_to_file('result.png')

options.json example:

{
    "chart": {
        "type": "bar"
    },
    "title": {
        "text": "Which channels are driving engagement?"
    },
    "xAxis": {
        "categories": ["Jan", "Feb", "Mar", "Apr", "May", "Jun",
                       "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
    },
    "series": [{
        "data": [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]
}

Result:

You can find more option params on highcharts official documentation page

Installation

pip install git+git://github.com/lionasp/highcharts-loader/@master

Requirements

Python (3.5, 3.6, 3.7)

Unlimited usage

For unlimited usage you should to run own server rather than relying on the public export.highcharts.com server which is rate limited. You can use solution from this repo

How to use:

Run export server with docker
- Without docker-compose (run next command in terminal for expose the service on port 8080):
```
docker run -d --name highcharts -p 8080:8080 onsdigital/highcharts-export-node
```
- With docker-compose (paste next command to docker-compose.yml file):
```
highcharts:
    image: onsdigital/highcharts-export-docker
    ports:
      - "8080"
```

Send url param to ChartLoader instance

chart = ChartLoader(options, url='http://localhost:8080')

todo

Add tests