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Re: row calculation in a 2D array [message #12702 is a reply to message #12604]

Mon, 31 August 1998 00:00

Richard G. French
Messages: 65
Registered: June 1997

Member

I don't know what the execution time penalty is for doing this,
but I have often used

avg=reform(rebin(A[3:6,*],1,10))

not sure if the reform is essential in this example but in general
it is useful for making sure a vector is a one-D array.
Dick French

>>
>> I want to perform the same operation on each sub-row in a 2D array.
>> Say I want to calculate the mean of element 4-7 in each row of a 10x10
>> array, and store the result in a 10 element-vector, where each element holds
>> the mean from the respective row
>>
>> how is this done the smartest way, without using time-consuming loops?
>>
>

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[Message index]

		row calculation in a 2D array By: Jonas on Tue, 25 August 1998 00:00
		Re: row calculation in a 2D array By: Richard G. French on Mon, 31 August 1998 00:00
		Re: row calculation in a 2D array By: Vap User on Mon, 31 August 1998 00:00

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