Python Package gr¶

Installation¶

GR is available on PyPI and we recommend installing it with pip:

pip install gr

This will automatically install both the GR runtime and the Python wrapper. You may need to install some additional dependencies on Linux:

Debian/Ubuntu:
apt install libxt6 libxrender1 libxext6 libgl1-mesa-glx libqt5widgets5
CentOS 7:
yum install libXt libXrender libXext mesa-libGL qt5-qtbase-gui
Fedora 28:
dnf install libXt libXrender libXext mesa-libGL qt5-qtbase-gui
openSUSE 42.3 / 15:
zypper install libXt6 libXrender1 libXext6 Mesa-libGL1 libQt5Widgets5
Arch Linux:
pacman -S mesa qt5-base
CentOS 6 / Other Linux distributions
yum install libXt libXrender libXext Mesa-libGL qt-x11

Note: The CentOS 6 build is used for other Linux distributions and relies on Qt 4 for the gksqt application, so you may need to install X11, OpenGL and Qt 4 packages specific to your system.

For information on building the GR runtime yourself, see Building the GR Runtime.

GR does not rely on X11 for its non-interactive output formats, so you will not need the dependencies listed above on a headless system.
GR3 uses GLX for OpenGL context creation, which requires a connection to an X server. If you are using a headless sytem, e.g. a Docker container, you can use Xvfb or similar tools to start an X server that can be used by GR3, although it may only provide software rendering.

After installing GR, you can try it out by creating a simple plot:

from gr.pygr import mlab
mlab.plot(range(100), lambda x: x**2)

You can find several tutorials on using GR in the Tutorials section.

You can find a collection of Python scripts using GR in the Examples section.