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Re: representive digits [message #29135 is a reply to message #29134]

Mon, 04 February 2002 07:18

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

Andrea Pitacco wrote:
>
> On Mon, 04 Feb 2002 13:46:58 +0100, Reimar Bauer
> <r.bauer@fz-juelich.de> wrote:
>
>> Hi,
>>
>>
>> I am searching for a routine to copy numbers to their
>> representive digits in a string.
>>
>> e.g
>>
>> float : 6 digits
>>
>> numbers=[(1/3.)*1000., !pi*10000.]
>>
>> print,numbers,format='(F20.5)'
>>
>> gives a fix mask and returns:
>>
>> 333.33334
>> 31415.92773
>>
>>
>> what I like to have is :
>>
>> 333.333
>> 31415.9
>>
>> Any ideas ?
>
> IDL> numbers=[(1/3.)*1000., !pi*10000.]
> IDL> digNo=6
>
> IDL> Print, StrMid(StrTrim(String(Float(numbers)),2),0,digNo+1)
> 333.333 31415.9
>
> Andrea

Good idea

first result is:

IDL> numbers=[(1/3.)*1000., !pi*10000.]
IDL> digNo=6

IDL> x=StrMid(StrTrim(String(Float(numbers)),2),0,digNo+1)

IDL> fakt=10.0D^ROUND(/L64,ALOG10(numbers ))

IDL> PRINT,fakt*x/fakt,form='(F20.6)'

333.333000
31415.900000

thanks

Reimar

--
Reimar Bauer

Institut fuer Stratosphaerische Chemie (ICG-1)
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
http://www.fz-juelich.de/icg/icg1/
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a IDL library at ForschungsZentrum Juelich
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_lib_intro.h tml

http://www.fz-juelich.de/zb/text/publikation/juel3786.html
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[Message index]

		Re: representive digits By: R.Bauer on Tue, 05 February 2002 09:04
		Re: representive digits By: R.Bauer on Tue, 05 February 2002 09:01
		Re: representive digits By: James Kuyper on Mon, 04 February 2002 07:28
		Re: representive digits By: R.Bauer on Mon, 04 February 2002 07:18
		Re: representive digits By: andrea.pitacco on Mon, 04 February 2002 06:17

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