2. Development Environment

Before adding components to polar2grid you will need to set up a polar2grid development environment. This will make it easier to get the newest updates from other developers and vice versa. Creating a development environment does not provide the bash wrapper scripts since they depend on a software bundle. It is recommended that you contact the Polar2Grid team before adding/developing any new features to coordinate efforts.

The main code repository for polar2grid can be found on github at https://github.com/davidh-ssec/polar2grid. If you plan to make a lot of changes over a long period of time it may be beneficial to fork the main repository and then make a pull request when you believe your code is ready for other developers to see.

The following instructions will assist in getting an environment up and running that will allow for easy development of polar2grid. Most of the installation logic is kept in a simple script. If you would like more control over the installation process this script is the place to start.

1. Get a copy of the code repository:

   mkdir ~/polar2grid
   cd ~/polar2grid
   git clone https://github.com/davidh-ssec/polar2grid.git polar2grid
   cd polar2grid
   

   If you are working on a specific branch, like ‘ninjo’ for example, you should do the following in addition to the above. If you don’t know what this is for, don’t run it:

   git checkout -b ninjo origin/ninjo
   

   Note

   The develop branch has the newest features, but may not be fully tested. The master branch contains stable/release ready features.

2. Run the development installation script:

   ./create_dev_env.sh /path/to/your_dev_env
   

   This script will walk you through a few questions including whether or not to use ShellB3 (linux only), provide a preinstalled ShellB3, or build and install secondary polar2grid components.

3. Add paths to your environment

   At the end of step #2 the script prints a couple lines that should be added to your .bash_profile or .bashrc. Adding these lines, logging out, and logging back in will make polar2grid available to your shell.

   To run polar2grid from your new development environment run the following command. This command uses viirs2awips, but any other glue script or polar2grid utility should follow the same basic calling sequence:

   p2g_glue viirs awips -vvv -g 211e -f /path/to/test/data/files/SVI01*
   # for more options run
   p2g_glue viirs awips -h