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Re: st: graphing median values against time
From
Donald Spady <[email protected]>
To
Statalist Statalist <[email protected]>
Subject
Re: st: graphing median values against time
Date
Sun, 30 Mar 2014 18:29:34 -0600
Nick
I had tried various combinations of that command and could not get it to work.
here is my command
.lgraph tottend28 bvisittm1N if bvisittm1N < 55, by(aborig) xlabel(0(3)54) stat(mean) alsocollapse((median)) addplot(lgraph tottend28 bvisittm1N if bvisittm1N <55, by(aborig))
It doesn't work. I get the error
lgraph is not a twoway plot type
r(198);
Don
On Mar 30, 2014, at 5:14 PM, Nick Cox <[email protected]> wrote:
> Timothy explains how to do that in the help.
>
> addplot(plot) This allows additional twoway plots to be plotted.
> See addplot_option. Note that
> because lgraph collapses the data before plotting in twoway,
> plots given in addplot(plot)
> should also refer to the collapsed data. Specify in
> alsocollapse(clist) any additional data
> that need to be collapsed.
>
> So, if you want median as well as mean you must specify
>
> alsocollapse(median) addplot(<whatever>)
>
> Note that nothing obliges you to use another -line- call.
>
> I haven't use -lgraph-, just looked at its help, but Timothy provides
> lots of functionality.
> Nick
> [email protected]
>
>
> On 30 March 2014 23:51, Donald Spady <[email protected]> wrote:
>> Timothy
>> I am using your -lgraph- command and wonder if it is possible to have TWO stats created (e.g. mean and median) for the same variable(s) at the same time. I want to plot both mean and median and cannot create an overlay to do so.
>>
>> Many thanks
>> Don
>> On Mar 28, 2014, at 1:29 AM, Timothy Mak <[email protected]> wrote:
>>
>>> The command -lgraph- that I wrote is for exactly this kind of problem if you don't want to create all the variables before plotting a graph.
>>> You can see it by typing:
>>> ssc des lgraph
>>>
>>> Tim
>>>
>>> -----Original Message-----
>>> From: [email protected] [mailto:[email protected]] On Behalf Of Donald Spady
>>> Sent: 28 March 2014 08:59
>>> To: Statalist Statalist
>>> Subject: Re: st: graphing median values against time
>>>
>>> Nick
>>> It works. Just as I needed. Many thanks.
>>> John: That suggestion didn't work the way I wanted it to, but thanks for the idea.
>>>
>>> Don
>>> On Mar 27, 2014, at 5:48 PM, Nick Cox <[email protected]> wrote:
>>>
>>>> Sure. If you use -egen-'s -median()- and -mean()- functions to get the
>>>> variables you want, then it's any graph you want.
>>>>
>>>> As the median and mean values are repeated, don't plot them repeatedly.
>>>>
>>>> Here are some dopey examples.
>>>>
>>>> . webuse grunfeld
>>>>
>>>> . egen median = median(invest), by(year)
>>>>
>>>> . egen mean = mean(invest), by(year)
>>>>
>>>> . egen tag = tag(year)
>>>>
>>>> . line mean median year if tag
>>>>
>>>> For finer subdivisions, just use more variables as arguments to -by()-.
>>>>
>>>> Nick
>>>> [email protected]
>>>>
>>>>
>>>> On 27 March 2014 22:34, Donald Spady <[email protected]> wrote:
>>>>> Dear all
>>>>> I want to graph the median and mean values of a series of variables against a time variable (on the X axis) and with the option of stratifying the variables by another one (such as sex or disease state). I think I can do this by collapsing the data but is it possible to do this while retaining the data set in its 'original' state. I have searched the archives and the reference manuals but have not come up with anything that seems to be what I want.
>>>>> In many ways what I would like is a box plot with JUST the median (or mean) being plotted: no box, no outliers. Is that possible.
>>>>>
>>>>> Thanks
>>>>> Don
>>>>> *
>>>>> * For searches and help try:
>>>>> * http://www.stata.com/help.cgi?search
>>>>> * http://www.stata.com/support/faqs/resources/statalist-faq/
>>>>> * http://www.ats.ucla.edu/stat/stata/
>>>>
>>>> *
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>>>> * http://www.ats.ucla.edu/stat/stata/
>>>>
>>>
>>>
>>> *
>>> * For searches and help try:
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>>> * http://www.ats.ucla.edu/stat/stata/
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>>> *
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>>> * http://www.ats.ucla.edu/stat/stata/
>>>
>>
>>
>> *
>> * For searches and help try:
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>> * http://www.ats.ucla.edu/stat/stata/
>
> *
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> * http://www.ats.ucla.edu/stat/stata/
>
*
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