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MathGroup Archive 2005

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Re: Rearranging a data array containing calendrical as well as data entries.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg54927] Re: Rearranging a data array containing calendrical as well as data entries.
  • From: DrBob <drbob at bigfoot.com>
  • Date: Sun, 6 Mar 2005 00:56:28 -0500 (EST)
  • References: <20050305164826.HZQM3789.lakermmtao05.cox.net@boris>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

Ah! You're right, but the fix is simple. I thought each line had up to 7 data values (a week per line), but actually they have up to 8. Careless of me not to count them!

Change 7 to 8 in dateValue, and that takes care of it.

If the (max) table width is variable, on the other hand, we'd need different code.

Bobby

On Sat, 5 Mar 2005 10:48:16 -0600, Hans Michel <hmichel at cox.net> wrote:

> Does not match.
>
> January has 31 days.
>
> The USGS data is well ordered.
>
> Hans
>
> "DrBob" <drbob at bigfoot.com> wrote in message
> news:d09cct$d0a$1 at smc.vnet.net...
>> Here's a start:
>>
>> rawData=Import["test.txt","Table"]
>>
>>
> {{1999,1,1,489.82,489.82,495.01,495.01,495.01,495.01,495.01,490.51},{199
> 9,1,2,
>>     490.51,490.51,490.51,490.51,490.38,490.38,490.38,490.38},{
>>
>>
> 1999,1,3,490.38,510.38,510.38,510.38,510.38,510.38,528.66,528.66},{1999,
> 1,4,
>>     528.66,528.66,528.66,501.68,501.68,501.68,501.68},{1999,2,
>>
>>
> 1,501.68,496.44,496.44,496.44,496.44,496.44,478.72,478.72},{1999,2,2,478
> .72,
>>     478.72,478.72,452.82,452.82,452.82,452.82,452.82},{1999,2,
>>
>>
> 3,450.19,450.19,450.19,450.19,450.19,443.98,443.98,443.98},{1999,2,4,443
> .98,
>>     443.98,440.14,440.14},{1999,3,1,440.14,440.14,440.14,453.64,
>>
>>
> 453.64,453.64,453.64,453.64},{1999,3,2,503.98,503.98,503.98,503.98,503.9
> 8,
>>     500.84,500.84,500.84},{1999,3,3,500.84,500.84,473.48,473.48,
>>
>>
> 473.48,473.48,473.48,463.19},{1999,3,4,463.19,463.19,463.19,463.19,457.5
> 4,
>>     457.54,457.54}}
>>
>> Clear[dateValue, month, twoDigit]
>> twoDigit[i_Integer?Positive] := StringJoin @@
>>    PadLeft[Characters@ToString@i, 2, "0"]
>> month[i_Integer] /; 1 <= i <= 12 := month[i] = {"Jan", "Feb", "Mar",
>>  "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}[[i]]
>> dateValue@{yr_, mo_, wk_, values___} := Transpose@{twoDigit[# + 7(
>>   wk - 1)] <> month@mo <> ToString@yr & /@ Range@Length@{values},
>> {values}}
>> Flatten[dateValue /@ rawData, 1]
>>
>> {{"01Jan1999", 489.82},
>>   {"02Jan1999", 489.82},
>>   {"03Jan1999", 495.01},
>>   {"04Jan1999", 495.01},
>>   {"05Jan1999", 495.01},
>>   {"06Jan1999", 495.01},
>>   {"07Jan1999", 495.01},
>>   {"08Jan1999", 490.51},
>>   {"08Jan1999", 490.51},
>>   {"09Jan1999", 490.51},
>>   {"10Jan1999", 490.51},
>>   {"11Jan1999", 490.51},
>>   {"12Jan1999", 490.38},
>>   {"13Jan1999", 490.38},
>>   {"14Jan1999", 490.38},
>>   {"15Jan1999", 490.38},
>>   {"15Jan1999", 490.38},
>>   {"16Jan1999", 510.38},
>>   {"17Jan1999", 510.38},
>>   {"18Jan1999", 510.38},
>>   {"19Jan1999", 510.38},
>>   {"20Jan1999", 510.38},
>>   {"21Jan1999", 528.66},
>>   {"22Jan1999", 528.66},
>>   {"22Jan1999", 528.66},
>>   {"23Jan1999", 528.66},
>>   {"24Jan1999", 528.66},
>>   {"25Jan1999", 501.68},
>>   {"26Jan1999", 501.68},
>>   {"27Jan1999", 501.68},
>>   {"28Jan1999", 501.68},
>>   {"01Feb1999", 501.68},
>>   {"02Feb1999", 496.44},
>>   {"03Feb1999", 496.44},
>>   {"04Feb1999", 496.44},
>>   {"05Feb1999", 496.44},
>>   {"06Feb1999", 496.44},
>>   {"07Feb1999", 478.72},
>>   {"08Feb1999", 478.72},
>>   {"08Feb1999", 478.72},
>>   {"09Feb1999", 478.72},
>>   {"10Feb1999", 478.72},
>>   {"11Feb1999", 452.82},
>>   {"12Feb1999", 452.82},
>>   {"13Feb1999", 452.82},
>>   {"14Feb1999", 452.82},
>>   {"15Feb1999", 452.82},
>>   {"15Feb1999", 450.19},
>>   {"16Feb1999", 450.19},
>>   {"17Feb1999", 450.19},
>>   {"18Feb1999", 450.19},
>>   {"19Feb1999", 450.19},
>>   {"20Feb1999", 443.98},
>>   {"21Feb1999", 443.98},
>>   {"22Feb1999", 443.98},
>>   {"22Feb1999", 443.98},
>>   {"23Feb1999", 443.98},
>>   {"24Feb1999", 440.14},
>>   {"25Feb1999", 440.14},
>>   {"01Mar1999", 440.14},
>>   {"02Mar1999", 440.14},
>>   {"03Mar1999", 440.14},
>>   {"04Mar1999", 453.64},
>>   {"05Mar1999", 453.64},
>>   {"06Mar1999", 453.64},
>>   {"07Mar1999", 453.64},
>>   {"08Mar1999", 453.64},
>>   {"08Mar1999", 503.98},
>>   {"09Mar1999", 503.98},
>>   {"10Mar1999", 503.98},
>>   {"11Mar1999", 503.98},
>>   {"12Mar1999", 503.98},
>>   {"13Mar1999", 500.84},
>>   {"14Mar1999", 500.84},
>>   {"15Mar1999", 500.84},
>>   {"15Mar1999", 500.84},
>>   {"16Mar1999", 500.84},
>>   {"17Mar1999", 473.48},
>>   {"18Mar1999", 473.48},
>>   {"19Mar1999", 473.48},
>>   {"20Mar1999", 473.48},
>>   {"21Mar1999", 473.48},
>>   {"22Mar1999", 463.19},
>>   {"22Mar1999", 463.19},
>>   {"23Mar1999", 463.19},
>>   {"24Mar1999", 463.19},
>>   {"25Mar1999", 463.19},
>>   {"26Mar1999", 457.54},
>>   {"27Mar1999", 457.54},
>>   {"28Mar1999", 457.54}}
>>
>> Bobby
>>
>>
>> On Wed, 2 Mar 2005 22:29:16 -0500 (EST), Gilmar
>> <gilmar.rodriguez at nwfwmd.state.fl.us> wrote:
>>
>>> Dear Mathematica User Friends:
>>>
>>> I have a file containing flow data from the USGS, in the following
>>> format:
>>>
>>> 1999 1 1 489.82 489.82 495.01 495.01 495.01 495.01 495.01 490.51
>>> 1999 1 2 490.51 490.51 490.51 490.51 490.38 490.38 490.38 490.38
>>> 1999 1 3 490.38 510.38 510.38 510.38 510.38 510.38 528.66 528.66
>>> 1999 1 4 528.66 528.66 528.66 501.68 501.68 501.68 501.68
>>> 1999 2 1 501.68 496.44 496.44 496.44 496.44 496.44 478.72 478.72
>>> 1999 2 2 478.72 478.72 478.72 452.82 452.82 452.82 452.82 452.82
>>> 1999 2 3 450.19 450.19 450.19 450.19 450.19 443.98 443.98 443.98
>>> 1999 2 4 443.98 443.98 440.14 440.14
>>> 1999 3 1 440.14 440.14 440.14 453.64 453.64 453.64 453.64 453.64
>>> 1999 3 2 503.98 503.98 503.98 503.98 503.98 500.84 500.84 500.84
>>> 1999 3 3 500.84 500.84 473.48 473.48 473.48 473.48 473.48 463.19
>>> 1999 3 4 463.19 463.19 463.19 463.19 457.54 457.54 457.54
>>>
>>> This format is used by the USGS to compress their data records.
>>>
>>> Each row contains:
>>> Year, Month Number(1 to 12), Row Number (1 to 4), and data entries.
>>>
>>> The first row:
>>> 1999 1 1 489.82 489.82 495.01 495.01 495.01 495.01 495.01 490.51
>>> contains flow values corresponding to: January 1 to January 8,
>>> of the year 1999.
>>>
>>> The second row:
>>> 1999 1 2 490.51 490.51 490.51 490.51 490.38 490.38 490.38 490.38
>>> contains flow values corresponding to: January 9 to January 16,
>>> of the year 1999.
>>>
>>> The third row:
>>> 1999 1 3 490.38 510.38 510.38 510.38 510.38 510.38 528.66 528.66
>>> contains flow values corresponding to: January 17 to January 24,
>>> of the year 1999.
>>>
>>> The fourth row:
>>> 1999 1 4 528.66 528.66 528.66 501.68 501.68 501.68 501.68
>>> contains flow values corresponding to: January 25 to January 31,
>>> of the year 1999.
>>>
>>> I think that you get the picture of how this data set is assembled.
>>>
>>> What I need is a program that can turn the above mentioned horizontal
>>> array, into a simple vertical array, containing two columns;
>>> the first column contains the dates when the data was collected,
>>> and the second column contains the flow values; i.e.
>>>
>>> 01Jan1999 489.82
>>> 02Jan1999 489.82
>>> 03Jan1999 495.01
>>> etc.
>>>
>>> If I give the program a starting date, and ending date for an
>>> arbitrary record; the program should be able to allocate two
>>> arrays to:
>>>
>>> (1.) put the dates between the starting date, and ending date,
>>> to form the first column of the vertical array.
>>>
>>> (2.)match correctly those dates with the data to appear in
>>> the second column of the vertical array.
>>>
>>> The program should discern between regular years, and leap
>>> years.  Those of you that are still using FORTRAN, and have
>>> experienced how difficult it is to deal with date functions
>>> using FORTRAN, might sympathize with my request.
>>>
>>> P.S. To get a larger set of USGS flow data to test your program
>>> please download the following file:
>>>
>>> http://www.gilmarlily.netfirms.com/download/flow.dat
>>>
>>> Thank you for your help!
>>>
>>>
>>>
>>>
>>
>>
>>
>> --
>> DrBob at bigfoot.com
>> www.eclecticdreams.net
>>
>
>
>
>
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


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