comp.lang.idl-pvwave archive: archive » Everything I always wanted to know about IDL * but were afraid to ask. Chapter1

Home » Public Forums » archive » Everything I always wanted to know about IDL * but were afraid to ask. Chapter1

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Everything I always wanted to know about IDL * but were afraid to ask. Chapter1 [message #36941]

Fri, 14 November 2003 04:16

Nuno Oliveira
Messages: 75
Registered: October 2003

Member

1. Pointers.

I do understand the concept of pointers (or I suppose I do) but I'm with
troubles with working with them on IDL. I create a pointer;

A=PTR_NEW(/ALLOCATE_HEAP)

I know how to add values to the pointer;

*A=first_value

*A=[*A, next_value]

As many times as the values I want to add to the pointer.

I can print the whole pointer with PRINT, *A. But how can I get intermediate
positions??.

As far as I can recall from my C classes I do believe that in C, A means the
memory position pointed by A, in what we could call the first pointer
positions and you could use a counter to get further position with a syntax
like *(A+counter) In IDL *A means not only the memory position pointed by A
but also the full contents of the pointer?

Cheers,

Nuno.

I can tell that for my particular I have already a solution that is to
create an array as new=INTARR(N_ELEMENTS(*A)) and then I make new=*A But my
curiosity still remains.

Report message to a moderator

[Message index]

Everything I always wanted to know about IDL * but were afraid to ask. Chapter1

By: Nuno Oliveira on Fri, 14 November 2003 04:16

Previous Topic:	IDL crashes
Next Topic:	Re: Everything I always wanted to know about IDL * but were afraid to ask. Chapter1

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 14:52:28 PDT 2025

Total time taken to generate the page: 0.53444 seconds