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Re: AW: st: RE: Graphing time on the x axis


From   moleps islon <moleps2@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: st: RE: Graphing time on the x axis
Date   Mon, 21 Dec 2009 22:15:44 +0100

The measurements have taken place at -clock-. However trying to twoway
graph with clock along the x axis resulted in the problem with
changing dates and jumps on the graph. I tried to cricumvent this by
subtracting clock with the first clock-value.. but as you see it
leaves me with the same problem. I´m sure there is someway around
this...



.format x %9.0g

. l x clock in 1/5

     +------------------+
     |     x     clock |
     |------------------|
  1. |     0   18:46:46 |
  2. | 18000   18:47:04 |
  3. | 30000   18:47:16 |
  4. | 36000   18:47:22 |
  5. | 66000   18:47:52 |
     +------------------+

M




On Mon, Dec 21, 2009 at 9:58 PM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>
> <>
>
> I am not sure why you - format x %td_HH:MM:SS- while I formatted - format x
> %tc_HH:MM:SS-. What happens when you
>
> ***
> format x %9.0g
> l in 1/5
> ***
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of moleps
> Sent: Montag, 21. Dezember 2009 21:51
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: AW: st: RE: Graphing time on the x axis
>
> To me there doesnt seem to be any difference between the sets, but doing the
> following explains why the graph looks as it does. However I do not
> understand how this comes about or how I can rectify it...
>
>
>
> . list x in 1/5
>
>     +----------+
>     |        x |
>     |----------|
>  1. | 00:00:00 |
>  2. | 00:00:18 |
>  3. | 00:00:30 |
>  4. | 00:00:36 |
>  5. | 00:01:06 |
>     +----------+
>
> . sort x
>
> . list x in 1/5
>
>     +----------+
>     |        x |
>     |----------|
>  1. | 05:10:24 |
>  2. | 05:10:30 |
>  3. | 05:10:36 |
>  4. | 05:10:42 |
>  5. | 05:10:48 |
>     +----------+
>
>
> M
>
>
>
> On 21. des. 2009, at 21.18, Martin Weiss wrote:
>
>>
>> <>
>>
>> How is your dataset different from the one I am playing with?
>>
>>
>> *******
>> clear*
>> set obs 1000
>> set seed 10234
>>
>> gen x=(_n-1)*6000
>>
>> format x %tc_HH:MM:SS
>>
>> gen mean_amp =rnormal()
>> gen meanp =rnormal()
>>
>> gen byte c7=(runiform()<.2)+1
>>
>> compress
>>
>> tw (line mean_amp x if c7==1) /*
>> */ (line mean_amp x if c7==2) /*
>> */ (line meanp x if c7==1)  /*
>> */ (line meanp x if c7==2)
>> *******
>>
>>
>> HTH
>> Martin
>>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of moleps
>> Sent: Montag, 21. Dezember 2009 20:32
>> To: statalist@hsphsun2.harvard.edu
>> Subject: Re: AW: st: RE: Graphing time on the x axis
>>
>> picture of the graph
>>
>> http://www.flickr.com/photos/45805518@N04/?saved=1
>>
>> commands
>>
>>
>>
>>
>>
>> . format x %td_HH:MM:SS
>>
>> . list x in 1/5
>>
>>     +----------+
>>     |        x |
>>     |----------|
>>  1. | 00:00:00 |
>>  2. | 00:00:18 |
>>  3. | 00:00:30 |
>>  4. | 00:00:36 |
>>  5. | 00:01:06 |
>>     +----------+
>> . tw (line  mean_amp x if c7==1) (line  mean_amp x if c7==2) (line   meanp
> x
>> if c7==1) (line   meanp x
>>> if c7==2)
>>
>> Regards,
>>
>> M
>>
>>
>>
>> On 21. des. 2009, at 19.57, Martin Weiss wrote:
>>
>>>
>>> <>
>>>
>>>
>>> You should probably reproduce the problem with a dataset shipped with
>> Stata.
>>> Is the time variable numeric or string?
>>>
>>>
>>>
>>> HTH
>>> Martin
>>>
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: owner-statalist@hsphsun2.harvard.edu
>>> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von moleps
>>> Gesendet: Montag, 21. Dezember 2009 19:48
>>> An: statalist@hsphsun2.harvard.edu
>>> Betreff: Re: st: RE: Graphing time on the x axis
>>>
>>> Maybe I was unclear in my description of the graph, but i dont think it
> is
>> a
>>> scale or label question. The problem is that given the coordinates
> (00:00,
>>> 2.3) (05:36,1.9) (07:20,3.1) (18:58,2.9) they are not graphed in that
>> order;
>>> Instead I have (07:20,3.1) (18:58,2.9) (00:00, 2.3) (05:36,1.9) ...
>>>
>>> Regards
>>>
>>> M
>>>
>>>
>>> On 21. des. 2009, at 13.45, Nick Cox wrote:
>>>
>>>> Clearly you need to specify your own.
>>>>
>>>> A convenience tool is -mylabels- from SSC. You just need to specify the
>>> conversion from Stata's underlying scale, presumably milliseconds, to
> your
>>> desired scale, which may be hours (you don't say what you want instead).
>> See
>>> the help for more.
>>>>
>>>> Nick
>>>> n.j.cox@durham.ac.uk
>>>>
>>>> moleps islon
>>>>
>>>> I´ve created a variable, time, for two measurements that both have
>>>> been subtracted from the starting time of the measuerement so that the
>>>> two  start out with time 00:00:00 and I have measurements every 10
>>>> sec. However after doing a twoway plot the starting point is not
>>>> 00:00:00. Instead I have these tick marks and values along the x
>>>> axis:: 07:20--12:53--18:58--00:00--05:36.... Any ideas?
>>>>
>>>>
>>>> *
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>>>
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>>
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