As a Python package, SpecViz is installable via any approach that is available for installing Python packages. In practice the easiest way is often using the the Anaconda package manager, but several other options are available. These are detailed below
Install via Anaconda¶
If you do not have Anaconda, please follow the instructions here to install it, or scroll down for manual installation of SpecViz.
If you are using the Space Telescope Science Institute’s AstroConda channel, then all you have to do to install SpecViz is simply type the following at any Bash terminal prompt:
$ conda install specviz
If you do not have AstroConda installed, you can still install SpecViz from AstrocConda by specifying the channel in your install command:
$ conda install --channel http://ssb.stsci.edu/astroconda specviz
At this point, you’re done! You can launch SpecViz by typing the following at any terminal:
To uninstall via Anaconda, simply type the following at a command line:
$ conda uninstall specviz
Install via source¶
SpecViz can also be installed manually using the source code followint the
instructions below. The dependencies are listed in the
setup.cfg file, and
therefore most of them will be handled automatically by the setup functions,
the exception to this is the exception of PyQt, which may require manual
Clone the SpecViz repository somewhere on your system, and install locally using
pip. If you are using an Anaconda virtual environment, please be sure to
activate it first before installing:
$ source activate <environment_name>.
$ pip install git+http://firstname.lastname@example.org
This uses the
pip installation system, so please note that
- You need to have
pipinstalled (included in most Python installations).
- You do not need to run
python setup.py install.
- You do not need to install the dependencies by hand (except for PyQt).
pip command will use your default Python to install.
You can specify by using
pip3, if you’re not using a virtual
You may also install by cloning the repository directly
$ git clone https://github.com/spacetelescope/specviz.git $ cd specviz $ git checkout tags/v0.3.0 $ python setup.py install
SpecViz requires PyQt. Currently, only python environments with 3.5 or higher
installed can use
pip to install PyQt5, in which case simply type:
$ pip install pyqt5
to install it on your system.
In any other case, PyQt can be installed via anaconda:
$ conda install pyqt
To uninstall via
pip, simply type the following at a command line:
$ pip uninstall specviz
On a Mac with Qt5, depending on exactly how you have set up Anaconda, you might see the following error after following the above instructions:
This application failed to start because it could not find or load the Qt platform plugin "cocoa". Reinstalling the application may fix this problem.
If you see this message, you have encountered an incompatibility between Anaconda’s packaging of Qt4 and Qt5. The workaround is to uninstall Qt4 with the following command:
$ conda uninstall pyqt qt
and SpecViz should now happily run.
Conversely, if you’ve had PyQt5 installed previously and you wish to run the PyQt4 version, you may run into a similar error:
$ RuntimeError: the PyQt4.QtCore and PyQt5.QtCore modules both wrap the QObject class
This issue can be solved with the following command:
$ conda uninstall pyqt5 qt5