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MathGroup Archive 2012

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  • To: mathgroup at smc.vnet.net
  • Subject: [mg127325] DateList
  • From: "Benedetto Bongiorno" <bongiob at sbcglobal.net>
  • Date: Tue, 17 Jul 2012 01:30:25 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Delivered-to: mathgroup-newout@smc.vnet.net
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Participants,

 

I have had difficulty in using the DateList function.

I am to convert string  dates "mm/dd/yyyy"  to  a date list
{YYYY,MM,DD,0,0,0}.

I have large data sets of approx. 400,000.

Using the following routine, Mathematica hangs and does not produce any
result.

 

lst=Range[1,Length[data]];

ParallelMap[DateList[data[[#,5]],{"Month","/","Day","/","Year"}]&,lst]

 

Abort does not work. I need to do a hard Mathematica close.

 

The problem seems to occur when the dataset is between 200,000 and 300,000.

The routine has worked with data sets of less than 200,000.

 

Any idea as to what causes the problem?

 

Microsoft 7 (64bit), 18Gigs memory, Intel Xeon

Mathematica 8.04

 

Thank You,

 

Ben

 

Benedetto Bongiorno CPA CRE

Cell 214-707-6546

Land 972-470-9138

Fax 972-470-9748

bongiob at sbcglobal.net

 

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