# Install CAVE
CAVE is the **C**ommon **A**WIPS **V**isualization **E**nvironment that is used for rendering and analyzing data for AWIPS. Unidata supports CAVE to work on three platforms: [Centos (Redhat) Linux](#linux), [Windows](#windows), and [macOS](#macos). The installer may require administrator priviledges to install and may require other system changes (environment variables, etc) as well.
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## General Requirements
Regardless of what Operating System CAVE is running on, these general requirements are recommended in order for CAVE to perform optimally:
- Java 1.8
- OpenGL 2.0 Compatible Devices
- At least 4GB RAM
- At least 2GB Disk Space for Caching
- NVIDIA Graphics Card
- [Latest NVIDIA Driver](http://www.nvidia.com/Download/index.aspx?lang=en-us)
> Note: While other graphics cards *may* work, NVIDIA Quadro graphics card is recommended for full visualization capability
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## Linux
### System Requirements
- 64 bit CentOS/Red Hat 7
### Download and Installation Instructions
1. Download the following installer: [**awips_install.sh** ](https://www.unidata.ucar.edu/software/awips2/awips_install.sh)
2. In a terminal, go to the download directory
3. Make the installer an executable by running: `chmod 755 awips_install.sh`
4. Run the installer: `sudo ./awips_install.sh --cave`
- This will install the application in `/awips2/cave/` and set the local cache to `~/caveData/`
To run CAVE either:
- Use the terminal and type the command `cave`
- Find the application in the Linux Desktop menu: Applications > Internet > AWIPS CAVE
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## Windows
For Windows, Unidata offers two installation options: a [**Linux Virtual Machine**](#method-1-linux-virtual-machine), or a [**Direct Windows Installation**](#method-2-direct-windows-install).
Currently, the [virtual machine (VM)](#method-1-linux-virtual-machine) is the recommended form of install for those who do not have administrative priviledges on the machine, or beginners who want a simpler installation process.
> Note: At the moment, the VM option may not render all products in CAVE (ex. RGB composites of satellite imagery)
The [direct installation method](#method-2-direct-windows-install) is recommended for those who have administrative priviledges and a little bit of experience installing more software.
### Method 1: Linux Virtual Machine
This method is recommended for beginners, or those with less computer knowledge as it is a very simple installation, however at this time, some CAVE functionality may be missing (ex: rendering RGB satellite images).
#### System Requirements
- [VMWare Workstation Player](https://www.vmware.com/products/workstation-player/workstation-player-evaluation.html) must be installed (free software)
#### Download and Installation Instructions
1. Download the zipped file containing the virtual machine: [**unidata_cave.zip** ](https://www.unidata.ucar.edu/downloads/awips2/unidata_cave.zip)
2. Unzip the folder by right-clicking and selecting "Extract All". All files will be extracted into a new folder.
3. Open VMWare Player and go to **Player** > **File...** > **Open** and locate the folder that was created from the downloaded zipped file. Select the file called **"CentOS 7 - Unidata CAVE 18-1-1.vmx"**.
4. Run this new VM option. If it asks if it's been moved or copied, select **"I Copied It"**.
- There will be a user in the Linux machine named "awips" and the password is "awips"
- The root password is "unidataAWIPS" if ever needed
Once inside the VM, to run CAVE either:
- Use the desktop icon
- Use the terminal and type the command `cave`
- Find the application in the Linux Desktop menu: Applications > Internet > AWIPS CAVE
### Method 2: Direct Windows Install
This method is recommended for personal use and requires Administrative priviledges. It should enable full CAVE capability, but it is a bit lengthy and might take about 20 minutes or so to complete.
> Note: It is important to use the exact versions of software that we link to or specify in our instructions. Deviations may cause installation problems or failures.
#### System Requirements
- 64-bit Miniconda3 (Python3.7 - 4.8.2)
- Python3 (comes with Miniconda installation)
- 64-bit Java JDK 1.8 (1.8_181)
- 64-bit Visual C++ Build Tools 2015 Update 3 (14.1)
- Numpy (1.15.1)
- Jep (3.8.2)
- User Variable PATH must have miniconda3 location
- User Variables PYTHONHOME and PYTHONPATH must be defined
- System Variable JAVA_HOME must be defined
#### Download and Installation Instructions
1. Download and install 64-bit [Miniconda Python3.7 version 4.8.2 for Windows](https://repo.anaconda.com/miniconda/Miniconda3-py37_4.8.2-Windows-x86_64.exe)
- **Allow** Miniconda3 to set **PATH** and other environment variables
- **Register** miniconda as the default python
2. Download and install the 64-bit [Java JDK 1.8_181](https://www.unidata.ucar.edu/downloads/awips2/jdk-8u181-windows-x64.exe) (this is necessary so Jep can install properly).
- Select **Development Tools** as the installation options
- Make note of where it installs on your computer (the default is C:\ProgramFiles\Java\jdk1.8.0_181)
3. Set the environment variables:
- Access the Environment Variables window by typing "env" in the start bar, hitting enter, and clicking on the "Environment Variables..." button at the bottom of the "System Properties" window
- User Variables: **PYTHONPATH** and **PYTHONHOME**
- System Variable: **JAVA_HOME**
> Note: If PYTHONHOME is not set, the **gridslice** Python module will not be installed or available
4. [Download and install 64-bit Microsoft Visual Studio C++ Build Tools](https://my.visualstudio.com/Downloads?q=build%20tools%20c++%203&wt.mc_id=o~msft~vscom~older-downloads)
- To access the page linked above you will need a Microsoft account
- Download 64-bit **Visual C++ Build Tools 2015 Update 3**
- When running the installer, choose the **Default** Installation
5. Install dependent Python packages
- Open a terminal by typing "cmd" into the start bar and hitting enter
- Run the following command: `pip install numpy==1.15.1 jep=3.8.2`
6. Download and install: [**awips-cave.msi** ](https://www.unidata.ucar.edu/downloads/awips2/awips-cave.msi)
- In addition to the application directory, the MSI installer will attempt to copy the [*gridslice*](https://github.com/Unidata/gridslice) shared library to `$PYTHONHOME/Dlls/`. If the `$PYTHONHOME` environmental variable is not defined *gridslice* will not be installed. You can check to see if it was installed in the Dlls directory after you have completed steps 1-3.
> Note: CAVE will still run without gridslice, but certain bundles which use derived parameters, such as [**isentropic analysis**](../images/screenCapture-2016.04.04.13.41.26-20160404_000000.png), will not load.
To run CAVE, either:
- Type "cave" in the start bar and hit enter
- Find and run CAVE app in the file browser: C:\Program Files\Unidata\AWIPS CAVE\cave.exe
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## macOS
### System Requirements
- NVIDIA Graphics card is recommended, some Intel Graphics cards will working
> Note: Most AMD graphics cards are not supported
### Download and Installation Instructions
1. Download and install both: [**awips-cave.dmg** ](https://www.unidata.ucar.edu/downloads/awips2/awips-cave.dmg) and [**awips-python.pkg** ](https://www.unidata.ucar.edu/downloads/awips2/awips-python.pkg)
- This will install CAVE as an application and set the local cache to `~/Library/caveData`
> Note: The awips-python.pkg is not necessarily required, and CAVE will still run without it, but any derived data such as barbs, arrows, and various grid products will not render without having **jep** installed (it is assumed to be in /Library/Python/2.7/site-packages/jep/)
To run CAVE either:
- Use the System Menu Go > Applications > CAVE
- Type ⌘ + Spacebar and then type "cave", the application should appear and you can hit **enter** to run it
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## EDEX Connection
Unidata and XSEDE Jetstream have partnered to offer a EDEX data server in the cloud, open to the Unidata university community. Select the server in the Connectivity Preferences dialog, or enter **edex-cloud.unidata.ucar.edu** (without *http://* before, or *:9581/services* after).
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## Local Cache
After connecting to an EDEX server, you will have a local directory named **caveData** which contains files synced from EDEX as well as a client-side cache for data and map resources.
You can reset CAVE by removing the **caveData** directory and reconnecting to an EDEX server. Your local files have been removed, but if you are re-connecting to an EDEX server you have used before, the remote files will sync again to your local **~/caveData** (bundles, colormaps, etc.).
- Linux: `/home//caveData/`
- macOS: `/Users//Library/caveData/`
- Windows: `C:\Users\\caveData\`