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Tools

I've used the code from this folder to download data and turn it into images.

Usage

  1. Make sure node.js is installed. Run npm install and check that there are no errors.
  2. Make sure grib-api is installed (if you are on mac, then run brew install grib-api)
  3. Make sure curl is installed - we will need it to download data

Get data

Run:

node ./download

This would result in ~80-90GB of data being transferred to your computer. Takes a while to finish.

Turn the data to images

By default, streamlines are rendered at very high resolution. This creates high CPU load, so be prepared to wait. On a powerful MacbookPro, a single image is generated in 3-4 minutes.

Image generation task is CPU bound, so if you have multiple CPUs you can edit scheduler.js to set the amount of CPUs dedicated to the rendering task, and then run:

node scheduler.js

This will produce images in the ./out folder.

One way to speed up the process is to change the parameters in the drawField file.

Making gif

You can use software of your choice. I prefer to use imagemagick and camtasia.