taskGNU Astronomy Utilities - Tasks: task #15109, Size of dataset as an Arithmetic...

 
 

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task #15109: Size of dataset as an Arithmetic operator

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Sat 08 Dec 2018 04:11:07 PM UTC  
 
Should Start On:  Fri 07 Dec 2018 11:00:00 PM UTC Should be Finished on:  Fri 07 Dec 2018 11:00:00 PM UTC
Category:  Arithmetic Priority:  5 - Normal
Item Group:  Enhancement Status:  Postponed
Privacy:  Public Percent Complete:  0%
Assigned to:  None Open/Closed:  Open
Effort:  0.00

Sat 08 Dec 2018 04:11:07 PM UTC, original submission:

In some processing situations, the size of a dataset along a dimension is necessary. So Arithmetic can use a new operator, maybe called "size" that will do this job. For example the command below will print the size of the dataset along its second dimension.

The only thing I am thinking about is that an operator like this (and maybe others like some future ones on printing the type) only need the dataset's meta-data and don't actually need the dataset's contents! So to be most efficient (especially on large datasets), we should implement a mechanism that if reading from a file, we don't need to actually load the contents and if reading from the stack (dataset already in memory, output of previous operator), we don't make a full copy.

Mohammad Akhlaghi <makhlaghi>
Project Administrator

 

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