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Re: round to x number of decimals within floating point value? [message #92475 is a reply to message #92463]

Wed, 23 December 2015 07:57

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Tuesday, December 22, 2015 at 4:17:06 PM UTC-5, omar ali wrote:
> بتاريخ الخميس، 13 يناير، 2011 8:29:29 م UTC+1، كتب Snow53:
>> I need to round the values within a file to three decimal places. For
>> example, 0.00053335 would become 0.001.
>> I also have many NaNs within the file.
>>
>> Any suggestions?
>>
>> Thanks!
>
> Hi there,
> I have gone through the messages and i wonder there is a solution to conver 0.00053335 to 0.001. Indeed, i have a number (0.2345678)and i want it to be with 2 digits after the decimal

David's solution from four years ago is still a good one...
IDL> a = 0.2345678d
IDL> print, round(a*100)/100.0d
0.23000000
Or if you just care about the printed version,
IDL> print, a, format='(D0.2)'
0.23

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[Message index]

		round to x number of decimals within floating point value? By: Snow53 on Thu, 13 January 2011 11:29
		Re: round to x number of decimals within floating point value? By: David Fanning on Fri, 14 January 2011 07:33
		Re: round to x number of decimals within floating point value? By: omar ali on Tue, 22 December 2015 13:17
		Re: round to x number of decimals within floating point value? By: Craig Markwardt on Wed, 23 December 2015 07:57

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