taskGNU Astronomy Utilities - Tasks: task #15156, Programs as library functions

 
 

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task #15156: Programs as library functions

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Thu 17 Jan 2019 01:22:41 PM UTC  
 
Should Start On:  Thu 17 Jan 2019 12:00:00 AM UTC Should be Finished on:  Thu 17 Jan 2019 12:00:00 AM UTC
Category:  All Gnuastro Priority:  5 - Normal
Item Group:  None Status:  Postponed
Privacy:  Public Percent Complete:  0%
Assigned to:  Mohammad Akhlaghi <makhlaghi> Open/Closed:  Open
Effort:  0.00

Thu 17 Jan 2019 01:22:41 PM UTC, original submission:

High-level command-line programs (as opposed to low-level libraries) are currently the most common way that Gnuastro is used.

When considering task #13786 (to use Gnuastro in higher-level languages like Python, R, or Java), having a library function that can run NoiseChisel (for example, or any other program) from memory, without having to do a system call can be very useful.

One major hurdle in this regard until now was managing all the configuration options necessary for some programs as a function call.

For each program we can have a library function like: `gal_astnoisechisel' (prefixing the program name with `gal_' (the common prefix in all gnuastro's library functions).

To solve the configuration problem, we can break up the program's user defined variables (defined in the main structure of `src/*/main.h') into a separate structure from the generic parameters structure (which currently includes internal parameters also).

The library users can have access to the user defined variable structure and set the values as they like. When the library function is run, it can parse the configuration files using the same existing functions and fill in any value that the user hasn't defined base on them.

The rest (actual running of the program) is then trivial.

After wards, to implement task #13786 (atleast for the programs), we just need a wrapper for Gnuastro's `gal_data_t' data container to the respective language container (for example Numpy's in Python).

Mohammad Akhlaghi <makhlaghi>
Project AdministratorIn charge of this item.

 

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