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MathGroup Archive 2007

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Re: Help with DateListPlot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82214] Re: Help with DateListPlot
  • From: Bill Rowe <readnewsciv at sbcglobal.net>
  • Date: Mon, 15 Oct 2007 01:22:31 -0400 (EDT)

On 10/14/07 at 6:08 AM, KTugbawa at gmail.com wrote:

>How do you use the DateList Plot function when you have a 3-vector
>database. The first column is the date, the second column contains
>the names, and the last column contains the returns. I know that you
>have to use a loop.The data looks like this:

>Date                          Item                       return
>1/2/01                       TBill                         0.67
>1/3/01                        SP                          0.78
>1/4/01                       inv                            0.5
>1/5/01                       inve                          0.6

No loop is needed. For example, after putting the data into a Mathematica
compatible format, i.e.,

data = {{"1/2/01", "TBill", 0.67}, {"1/3/01", "SP", 0.78}, {"1/4/01",
    "inv", 0.5}, {"1/5/01", "inve", 0.6}};
   
Simply doing

DateListPlot[data[[All, {1, -1}]]]

will generate a plot. There will be warnings since "1/2/01" could be Feb 1, 2001 or Jan 2, 2001.
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