Tiny Dataset Toolkit in JavaScript

I developed a tiny toolkit written in JavaScript containing helper functions to manipulate data...


I usually put all my JavaScript scripts in a sub-directory of the plugins directory (for example, My_Scripts) and use my favorite text editor as described in this post [configure my dev environment].

1. Install

Now, in your plugins directory, create a new directory termed javascript , your folder tree is now like this...

ImageJ/
  +--luts/
  +--macros/ 
  +--plugins/
      +--My_Scripts/
      +--javascript/

Then download the following files tip-gist.js and nashorn-polyfill.js located in github.

• The first file contains various tools to manipulate the data.
• The second file contains missing JS system functions (polyfills in the jargon JS).

ImageJ/
  +--luts/
  +--macros/
  +--plugins/
      +--My_Scripts/
      +--javascript/
         +--tip-gist.js
         +--nashorn_polyfill.js 
            

Now, we are ready to play with the data.

2. How to use it

In the folder My_Scripts, create a new file hello_ML.js and restart ImageJ. Now, in the menu, Plugins > My_Scripts, we'll see the file hello_ML in the sub-menu.

With your favorite text editor, copy the following lines...

// Import helper functions
const IJ_PLUGINS = IJ.getDir('plugins');
load(`${IJ_PLUGINS}/javascript/nashorn_polyfill.js`);
load(`${IJ_PLUGINS}/javascript/tip-gist.js`);

These three lines import the JS functions located in the two files nashorn-polyfill.js and tip-gist.js.

Note: The following JS script only works if you have a Java version greater or equal to 1.9 (it doesn't work with Java 1.8). To check your java version, in the main IJ window, go to Help > About ImageJ.

3. Some examples

The detailed API is located in this post [Link] but here, a simple example showing the various methods available for the object DataSet.

+++ Script hello_ML.js+++ +++ End of Script hello_ML.js+++

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4. Other crazybiocomputing posts

Further readings are available in ...

• Machine Learning Glossary
• Machine Learning in ImageJ Series  [Link]
• JavaScript/ECMAScript TOC [Link]