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https://github.com/birchb1024/globulus
Program to automatically re-order columns of CSV by entropy ascending left to right. A companion for `frangipanni`.
https://github.com/birchb1024/globulus
Last synced: about 2 months ago
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Program to automatically re-order columns of CSV by entropy ascending left to right. A companion for `frangipanni`.
- Host: GitHub
- URL: https://github.com/birchb1024/globulus
- Owner: birchb1024
- License: mit
- Created: 2022-11-06T03:05:51.000Z (about 2 years ago)
- Default Branch: trunk
- Last Pushed: 2022-12-22T12:01:57.000Z (about 2 years ago)
- Last Synced: 2024-06-21T18:56:11.559Z (6 months ago)
- Language: Go
- Size: 206 KB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
### NAME
`globulus` - Filter to re-order columns of a CSV file by entropy,
ascending left to right.
### SYNPOSIS
`globulus [filename]`
### DESCRIPTION
The program re-orders the columns of a CSV file given as the argument, or on
standard input if no file is specified. The aim is to produce a hierarchical arrangement
of the records. This is best understood by an example. Given this input
| Description | Agent | Price | Region | Category |
| -------------------------------------------------- | ------------------ | ----- | ------- | ------------------------------ |
| Eldon Base for stackable storage shelf, platinum | Muhammed MacIntyre | 35 | Nunavut | Storage & Organization |
| 1.7 Cubic Foot Compact "Cube" Office Refrigerators | Barry French | 68.02 | Nunavut | Appliances |
| Cardinal Slant-D® Ring Binder, Heavy Gauge Vinyl | Barry French | 2.99 | Nunavut | Binders and Binder Accessories |
| R380 | Clay Rozendal | 3.99 | Nunavut | Telephones and Communication |
| Holmes HEPA Air Purifier | Carlos Soltero | 5.94 | Nunavut | Appliances |
| G.E. Longer-Life Indoor Recessed Floodlight Bulbs | Carlos Soltero | 4.95 | Nunavut | Office Furnishings |
| Angle-D Binders with Locking Rings, Label Holders | Carl Jackson | 7.72 | Nunavut | Binders and Binder Accessories |
| SAFCO Mobile Desk Side File, Wire Frame | Carl Jackson | 6.22 | Nunavut | Storage & Organization |
| SAFCO Commercial Wire Shelving, Black | Monica Federle | 35 | Nunavut | Storage & Organization |
| Xerox 198 | Dorothy Badders | 8.33 | Nunavut | Paper |
The program re-orders the columns like this:
| Region | Category | Agent | Price | Description |
| ------- | ------------------------------ | ------------------ | ----- | -------------------------------------------------- |
| Nunavut | Appliances | Barry French | 68.02 | 1.7 Cubic Foot Compact "Cube" Office Refrigerators |
| Nunavut | Appliances | Carlos Soltero | 5.94 | Holmes HEPA Air Purifier |
| Nunavut | Binders and Binder Accessories | Barry French | 2.99 | Cardinal Slant-D® Ring Binder, Heavy Gauge Vinyl |
| Nunavut | Binders and Binder Accessories | Carl Jackson | 7.72 | Angle-D Binders with Locking Rings, Label Holders |
| Nunavut | Office Furnishings | Carlos Soltero | 4.95 | G.E. Longer-Life Indoor Recessed Floodlight Bulbs |
| Nunavut | Paper | Dorothy Badders | 8.33 | Xerox 198 |
| Nunavut | Storage & Organization | Carl Jackson | 6.22 | SAFCO Mobile Desk Side File, Wire Frame |
| Nunavut | Storage & Organization | Monica Federle | 35 | SAFCO Commercial Wire Shelving, Black |
| Nunavut | Storage & Organization | Muhammed MacIntyre | 35 | Eldon Base for stackable storage shelf, platinum |
| Nunavut | Telephones and Communication | Clay Rozendal | 3.99 | R380 |
It works in these steps:
1. counts the number distinct values in each column
2. reorders the columns with priority given to those with the least distinct values
3. outputs the table in the new order.
### EXAMPLES
This is a good companion for [frangipanni](https://github.com/birchb1024/frangipanni). Which can take the output from
`globulus` and generate the hierarchy, for example we get:
```
$ ./globulus
### COPYRIGHT
Copyright © Peter William Birch: License MIT
### SEE ALSO
[frangipanni](https://github.com/birchb1024/frangipanni)
#### Eucalyptus Globulus
