comp.lang.idl-pvwave archive: archive » Re: idl format codes and output files

Home » Public Forums » archive » Re: idl format codes and output files

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

Re: idl format codes and output files [message #58916 is a reply to message #58915]

Mon, 25 February 2008 13:25

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

On Feb 25, 1:36 pm, Bob Crawford <Snowma...@gmail.com> wrote:
> On Feb 25, 1:16 pm, elwood <epolo...@uwsp.edu> wrote:
>
>> Is there a way to use printf and a format code which takes as a
>> parameter a variable size
>> width that is calculated prior to calling printf.
>> Reason why: So that the output file will have pretty formatted
>> columns.
>
>> For example,
>> Suppose I have a program that prompts for a string.
>> The program doesnt know ahead of time how long the string will be.
>
>> Then I use strlen to find its length
>> len=strlen(word)
>
>> can I do something like the following:
>
>> printf,1,word,format='(alen)'
>
> printf,1,word,format='(a)'
>
> -or-
>
> printf,1,word,fromat='(a0)'

To be more precise, yes you can create a string and pass it to the
format keyword. For example:

read, iwid, prompt="Input width: "
fmt='(I' + strtrim(iwid,2) + ')'
printf, lun, val, format=fmt

Report message to a moderator

[Message index]

		Re: idl format codes and output files By: Kenneth Bowman on Mon, 25 February 2008 10:50
		Re: idl format codes and output files By: Vince Hradil on Mon, 25 February 2008 13:25
		Re: idl format codes and output files By: Bob[3] on Mon, 25 February 2008 11:36

Previous Topic:	idl format codes and output files
Next Topic:	Images with coordinate axes, log scale etc.

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 16:31:24 PDT 2025

Total time taken to generate the page: 0.01325 seconds