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Re: Specification for a new array slicing function [message #15565 is a reply to message #15437]

Thu, 20 May 1999 00:00

Jack Saba
Messages: 30
Registered: January 1996

Member

> Stein Vidar Hagfors Haugan wrote:

>> My suggestion would be something a bit more like the native
>> Fortran 9X syntax (not that I actually *know* exactly how that
>> syntax works!) , e.g.:
>> a(0:5:2,:,5:9) would be translated into
>> arex(a,[0,5,2],-1,[5,9])

The Fortran standard is [Start]:[End][:Stride]. ":" without
preceding or following numbers means all elements; any or
all of Start, End, or :Stride can be left off and would default
to first element, last element, :1, respectively.

I don't see why a new function, whatever it's called, should
be needed to handle this. It looks (from the user perspective)
like a simple extension of the current IDL syntax for array
sectioning. And, again from at least this user's perspective,
Sect=a[0:5:2,:,5:9] is preferable to Sect=AS(a,[0,5,2],-1,[5,9]),
which is nowhere near as easy to remember or obvious-looking.

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[Message index]

		Specification for a new array slicing function By: Liam Gumley on Wed, 19 May 1999 00:00
		Re: Specification for a new array slicing function By: bowman on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Martin Schultz on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Jack Saba on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Martin Schultz on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Liam Gumley on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: steinhh on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Struan Gray on Thu, 20 May 1999 00:00
		Re: Specification for a new array slicing function By: Martin Schultz on Thu, 20 May 1999 00:00

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