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Re: IDL strplit : split a decimal number [message #40015 is a reply to message #40014]

Wed, 07 July 2004 03:37

Ben Panter
Messages: 102
Registered: July 2003

Senior Member

> For example, let's take A = 147.123456789d
> I need to make an 2D integer array called B, containing the two parts
> of A seperated by the dot ... B(0) = 147 and B(1) = 123456789 ... with

<snip>

> Maybe I shouldn't use the STRSPLIT function to do this?

How about not using strsplit?

IDL> a=123.45434362d

IDL> print, floor(a)
123

IDL> print, a-floor(a)
0.45434362

IDL> print, (a-floor(a))*1e8
45434362.

so b[0]=long(floor(a)) and
b[1]=long((a-floor(a))*1e8)

Note - I've used longs rather than ints as the double precision will be
larger than the point where ints go round again (~32k).

Ben

Blimey. And to think that a year ago I was worried about the sky falling
in with doubles and floats.

--
Ben Panter, Edinburgh
My name (no spaces)@bigfoot which is a com.

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[Message index]

		Re: IDL strplit : split a decimal number By: mwvogel on Wed, 07 July 2004 09:08
		Re: IDL strplit : split a decimal number By: Paolo Grigis on Wed, 07 July 2004 08:41
		Re: IDL strplit : split a decimal number By: mwvogel on Wed, 07 July 2004 07:57
		Re: IDL strplit : split a decimal number By: David Fanning on Wed, 07 July 2004 06:32
		Re: IDL strplit : split a decimal number By: Ben Panter on Wed, 07 July 2004 03:37

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