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Re: Reading particular data from a text file [message #91183 is a reply to message #91174]

Fri, 12 June 2015 01:34

Rosie
Messages: 27
Registered: September 2012

Junior Member

On Thursday, June 11, 2015 at 5:59:19 PM UTC+1, Jeremy Bailin wrote:
> On Wednesday, June 10, 2015 at 12:24:37 PM UTC-4, Parij wrote:
>> I have a text file as shown.
>> First column(S) I have 2 values 1 and 2
>> 2nd column (E) I have 3 values , 1,2,3 as shown repeating.
>> 3rd column (N)shows number of years.
>> Years (Y)are given from column 4 onward.
>> I need to pick up years for corresponding S and E. What would be the best possible ways to pick up those years ?
>>
>> S E N Y
>> 1 1 1 2004
>> 1 2 2 2001,2000
>> 1 3 3 1999,2000,2006
>> 2 1 3 2000,2001,2005
>> 2 2 0
>> 2 3 1 2000
>>
>> Thanks for any suggestion.
>> Regards.
>
> I would first read in the file using something like idlastro's readcol.pro with format="i,i,i,a" so that S, E, and N are integers and Y is a string. Then figure out which rows you want using logic on S and E, and for each row i use something like FIX(STRSPLIT(y[i], ',', /EXTRACT)) to get the list of years associated with it.
>
> -Jeremy.

Thanks a lot Jeremy !

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[Message index]

		Reading particular data from a text file By: Rosie on Wed, 10 June 2015 09:24
		Re: Reading particular data from a text file By: Jeremy Bailin on Thu, 11 June 2015 09:59
		Re: Reading particular data from a text file By: Rosie on Fri, 12 June 2015 01:34

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