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Re: format codes [message #93679 is a reply to message #93677]

Wed, 28 September 2016 08:00

Jim Pendleton
Messages: 165
Registered: November 2011

Senior Member

On Wednesday, September 28, 2016 at 5:44:57 AM UTC-6, Craig Markwardt wrote:
> On Tuesday, September 27, 2016 at 10:49:42 AM UTC-4, sayani ghosh wrote:
>> I am working with with phase data that looks like 23568978.124578 in cycles.
>> I want to export the whole value in decimal format without rounding off. The problem while using E11.4 or a or G10.4 is, IDL is rounding my data like 2.3568e+007.. Which is leading to errors in consequent calculations.
>
> FORMAT='(G)'
>
> will print the full double precision and include the exponent where necessary.

For those reading this thread in the future with IDL 8.6 or later, be aware of the difference between "(G)" (FORTRAN-style) and "%g" (C_style) FORMAT specifiers because they are not equivalent.

IDL> print, a, format = '(G)'
1.234567891011112E-066
IDL> print, a, format = '%g'
1.23457e-066
IDL> print, a, format = '%22g'
1.234567891011112e-066

Jim P.

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[Message index]

		format codes By: sayaniforever on Tue, 27 September 2016 07:49
		Re: format codes By: wlandsman on Tue, 27 September 2016 07:59
		Re: format codes By: sayaniforever on Tue, 27 September 2016 09:19
		Re: format codes By: wlandsman on Tue, 27 September 2016 09:27
		Re: format codes By: Markus Schmassmann on Wed, 28 September 2016 01:36
		Re: format codes By: Craig Markwardt on Wed, 28 September 2016 04:44
		Re: format codes By: Jim Pendleton on Wed, 28 September 2016 08:00
		Re: format codes By: Helder Marchetto on Wed, 28 September 2016 08:22
		Re: format codes By: Jim Pendleton on Wed, 28 September 2016 11:17
		Re: format codes By: sg26041991 on Sat, 01 October 2016 22:34

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