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Array multiplication: implicit loop query [message #26191]

Fri, 10 August 2001 03:56

george
Messages: 22
Registered: August 1996

Junior Member

Hi there

I was just calculating the following equation:

DEN_H = MMR_H * Pres * RMT / ( atomic_mass_H * Gas_constant * TN )

These numbers are 3D arrays, 1D arrays and constants, i.e.,

MMR_H = fltarr(30,91,40)
Pres = fltarr(30)
RMT = fltarr(30,91,40)
atomic_mass_H = constant
Gas_constant = constant
TN =fltarr(30,91,40)

The result of this is DEN_H (previously undefined) which ends up being
fltarr(30) - i.e., 1 dimensional.
To my mind DEN_H should be 3D (30,91,40) - shouldn't it ? Doesn't IDL
understand that I am implicity doing a full 3D calculation here ? It
would seem that, to get this to work I need to make
Pres=fltarr(30,91,40). However, this seems uneccessary because that
means that the 2 new dimensions for pressure are redundant.
Any advice ?? Cheers,
George Millward

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[Message index]

		Array multiplication: implicit loop query By: george on Fri, 10 August 2001 03:56
		Re: Array multiplication: implicit loop query By: bennetsc on Tue, 14 August 2001 23:57
		Re: Array multiplication: implicit loop query By: Richard Younger on Mon, 13 August 2001 13:59
		Re: Array multiplication: implicit loop query By: david[2] on Mon, 13 August 2001 11:52
		Re: Array multiplication: implicit loop query By: Richard Younger on Mon, 13 August 2001 11:37
		Re: Array multiplication: implicit loop query By: david[2] on Mon, 13 August 2001 07:55
		Re: Array multiplication: implicit loop query By: Craig Markwardt on Mon, 13 August 2001 06:58
		Re: Array multiplication: implicit loop query By: Paul van Delst on Mon, 13 August 2001 06:46
		Re: Array Multiplication By: Craig Markwardt on Sun, 25 March 2012 12:58
		Re: Array Multiplication By: lecacheux.alain on Sun, 25 March 2012 08:09

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