Installation

This installation guide has been tested on Ubuntu 16.04.6 LTS.

Installing Requirements

It is necessary to use Python 3. This installation guide has been tested with Python 3.5.2 and pip 8.1.1.

Install libwebkit (necessary for Vega)
```
sudo apt install libwebkitgtk-1.0
```

Install Java 8

sudo apt install openjdk-8-jre-headless

Choose the right java version (Java 8)
```
sudo update-alternatives --config java
```
Install ant
```
sudo apt install ant
```
Install xvfb (necessary to run Vega without GUI)
```
sudo apt install xvfb
```
Install py4j
```
pip3 install py4j
```

Clone this repository

git clone https://github.com/anneborcherding/Vega.git

cd Vega

Build Vega using ant
```
ant
```
The resulting zip-file can be found in build/stage/I.VegaBuild/
Copy the zip-file to a location of your choice und unzip it. We will call this folder path/to/vega.

If you wish to run Vega using the GUI, run ./Vega in path/to/vega.
If you wish to run Vega using the Python API, adapt example.py to your needs, copy it to path/to/vega and run it
```
python3 example.py
```

Make sure that you have installed all the requirements
Permission denied exception by xvfb-run: Make sure to use the right path for Vega. It needs to point to the executable.