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String Processing Question [message #42864]

Thu, 03 March 2005 12:42

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Folks,

My mind goes into shutdown mode whenever the subject of
string processing comes up. It always has, I don't know
why.

I have a method of doing this, but is looks like
a crock. Here is the situation.

I have a variable:

animal = 'Coyote'

And I have a string:

myString = 'My favorite animal is {1}.

I want to replace "{1}" with "Coyote". What is the
best way to do that, given that "{1}' can occur
anywhere in the string?

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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Re: String Processing Question [message #42980 is a reply to message #42864]

Fri, 04 March 2005 08:40

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Norbert Hahn writes:

> Why is there a need to use /Regex and thusly quoting the braces?
>
> Wouldn't
>
> StrJoin(StrSplit(myString, '{1}', /Extract, /Preserve_Null), animal)
>
> be sufficient?

IDL> animal = 'Coyote'
IDL> myString = 'My favorite animal is {1}.
IDL> print, StrJoin(StrSplit(myString, '{1}', /Extract, /Preserve_Null),
animal)
My favorite animal is CoyoteCoyoteCoyote.

It's good for emphasis, but beyond that, I think
the previous example is better. :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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Re: String Processing Question [message #42993 is a reply to message #42864]

Fri, 04 March 2005 01:06

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

David Fanning wrote:

> Folks,
>
> My mind goes into shutdown mode whenever the subject of
> string processing comes up. It always has, I don't know
> why.
>
> I have a method of doing this, but is looks like
> a crock. Here is the situation.
>
> I have a variable:
>
> animal = 'Coyote'
>
> And I have a string:
>
> myString = 'My favorite animal is {1}.

my_string=replace_string(my_string,'{1}',animal)

You find this function in our library
http://www.fz-juelich.de/icg/icg-i/idl_icglib/idl_source/idl _html/dbase
replace_string_dbase.pro.html

This was written before the regex stuff was implemented in idl.

cheers
Reimar

--
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
http://www.fz-juelich.de/icg/icg-i/
============================================================ ======
a IDL library at ForschungsZentrum Juelich
http://www.fz-juelich.de/icg/icg-i/idl_icglib/idl_lib_intro. html

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