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Re: st: Mkmat doesn't seem to store the observation values correctly?


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Mkmat doesn't seem to store the observation values correctly?
Date   Mon, 22 Oct 2012 08:56:44 +0200

My guess would be that your variable Ticker contains the values 8, 9,
2, 1, ... but that these values have labels 441235, 463,13212, 1213,
... You can check that by typing in Stata -list Ticker in 1/10,
nolabel-, and see if you than get the values 8, 9, 2, 1....

Hope this helps,
Maarten

On Sun, Oct 21, 2012 at 12:31 PM, Tim Streibel <Tim.Streibel@gmx.de> wrote:
> You're right, when I input the values as you did, it perfectly works. My variable name was correct, could it be a problem that I imported the data from Excel?
> Thanks a lot!
>
> -------- Original-Nachricht --------
>> Datum: Sun, 21 Oct 2012 11:15:49 +0100
>> Von: Nick Cox <njcoxstata@gmail.com>
>> An: statalist@hsphsun2.harvard.edu
>> Betreff: Re: st: Mkmat doesn\'t seem to store the observation values correctly?
>
>> I don't know why you thought that. I can't reproduce your problem.
>> Check your variable names carefully.
>>
>> . input Ticker
>>
>>         Ticker
>>   1.   441235
>>   2.      463
>>   3.    13212
>>   4.     1213
>>   5.      321
>>   6.      212
>>   7.      346
>>   8.     1322
>>   9.     3434
>>  10. end
>>
>> . l
>>
>>      +--------+
>>      | Ticker |
>>      |--------|
>>   1. | 441235 |
>>   2. |    463 |
>>   3. |  13212 |
>>   4. |   1213 |
>>   5. |    321 |
>>      |--------|
>>   6. |    212 |
>>   7. |    346 |
>>   8. |   1322 |
>>   9. |   3434 |
>>      +--------+
>>
>> . mkmat Ticker, matrix(X)
>>
>> . mat li X
>>
>> X[9,1]
>>     Ticker
>> r1  441235
>> r2     463
>> r3   13212
>> r4    1213
>> r5     321
>> r6     212
>> r7     346
>> r8    1322
>> r9    3434
>>
>>
>> On Sun, Oct 21, 2012 at 11:05 AM, Tim Streibel <Tim.Streibel@gmx.de>
>> wrote:
>> > Sorry, I thought it would be clear that the values are just different
>> >
>> >  list Ticker
>> >
>> >      +--------+
>> >      | Ticker |
>> >      |--------|
>> >   1. | 441235 |
>> >   2. |    463 |
>> >   3. |  13212 |
>> >   4. |   1213 |
>> >   5. |    321 |
>> >      |--------|
>> >   6. |    212 |
>> >   7. |    346 |
>> >   8. |   1322 |
>> >   9. |   3434 |
>> >
>> > variable type: long
>> >
>> > Do you need any other information?
>> >
>> > -------- Original-Nachricht --------
>> >> Datum: Sun, 21 Oct 2012 10:50:22 +0100
>> >> Von: Nick Cox <njcoxstata@gmail.com>
>> >> An: statalist@hsphsun2.harvard.edu
>> >> Betreff: Re: st: Mkmat doesn\'t seem to store the observation values
>> correctly?
>> >
>> >> You don't show us your original variable, so we can't see any grounds
>> >> for your claim.
>> >>
>> >> Nick
>> >>
>> >> On Sun, Oct 21, 2012 at 9:44 AM, Tim Streibel <Tim.Streibel@gmx.de>
>> wrote:
>> >> > First of all, I am sure that mkmat stores the values correctly, but I
>> >> dont know in which way it stores them.
>> >> >
>> >> > All I want to do is creating a matrix from a variable of my dataset
>> >> (even only 1xT format). However if I use mkmat, matrix list does not
>> yield the
>> >> original values of my variable (as you can see below). Since I would
>> like
>> >> to do some calculations with the created matrix, I would like to check
>> >> whether the matrix contains the correct values.
>> >> >
>> >> >
>> >> > mkmat Ticker, matrix(X)
>> >> >
>> >> > . matrix list X
>> >> >
>> >> > X[9,1]
>> >> >     Ticker
>> >> > r1       8
>> >> > r2       9
>> >> > r3       2
>> >> > r4       1
>> >> > r5       5
>> >> > r6       4
>> >> > r7       7
>> >> > r8       3
>> >> > r9       6
>> >>
>> *
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-- 
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
---------------------------------
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