Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: Making a bar graph from the row of a matrix
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Making a bar graph from the row of a matrix
Date
Mon, 8 Apr 2013 18:56:58 +0100
Your runnable code made it easier to see what you are doing; thanks.
Presumably this is just an example we can all play with.
-svmat- is a rather ugly command; the code here avoids it and adds a
couple of small tricks.
More importantly, I suggest considering a -graph dot- command. With
more than a few predictors, which you may have in your real
application(s), it is likely to be easier to read the resulting graph.
clear all
sysuse auto.dta
qui reg price mpg trunk weight
matrix test = e(V)
matrix rowtest = test["weight", 1...]
/* rowtest is the row I want to graph */
gen var_colnames = ""
gen trans_rowtest = .
tokenize "`: colnames rowtest'"
qui forval i = 1/`= colsof(rowtest)' {
replace trans_rowtest = rowtest[1, `i'] in `i'
replace var_colnames = "``i''" in `i'
}
graph bar (asis) trans_rowtest, over(var_colnames)
graph dot (asis)trans_rowtest, over(var_colnames) ///
yli(0, lc(gs12) lw(vthin)) ytitle("coefficient")
Nick
[email protected]
On 8 April 2013 16:49, Mauricio Esteban Cuak <[email protected]> wrote:
> Hi Nick, thanks for the answer.
> The following code plots the graph I wanted and may be useful for other people.
> It doesn't look very nice however.
> As suggested by Nick, I moved the names into a variable (slightly
> tricky) and the values into another.
>
>
> /* Begin CODE */
>
> clear all
>
> sysuse auto.dta
>
> qui reg price mpg trunk weight
>
> matrix test = e(V)
>
>
> matrix rowtest = test["weight", 1...]
>
> /* rowtest is the row I want to graph */
>
>
> local names : colnames rowtest
>
> local n_names : word count `names'
>
>
> gen var_colnames = ""
>
> forval i=1/`n_names' {
>
> local this_name = "`:word `i' of `names''"
>
> replace var_colnames = "`this_name'" if _n == `i'
>
> }
>
> matrix trans_rowtest = rowtest'
>
> svmat trans_rowtest
>
> graph bar trans_rowtest1, over(var_colnames)
>
>
> **************************************
>
>
>
> 2013/4/7 Mauricio Esteban Cuak <[email protected]>
>>
>> Hi Nick, thanks for the answer.
>> The following code plots the graph I wanted and may be useful for other people.
>> It doesn't look very nice however.
>> As suggested by Nick, I moved the names into a variable (slightly tricky) and the values into another.
>>
>>
>> **************BEGIN CODE********************
>>
>> clear all
>>
>> sysuse auto.dta
>>
>> qui reg price mpg trunk weight
>>
>> matrix test = e(V)
>>
>>
>> matrix rowtest = test["weight", 1...]
>>
>> /* rowtest is the row I want to graph */
>>
>>
>> local names : colnames rowtest
>>
>> local n_names : word count `names'
>>
>>
>> gen var_colnames = ""
>>
>> forval i=1/`n_names' {
>>
>> local this_name = "`:word `i' of `names''"
>>
>> replace var_colnames = "`this_name'" if _n == `i'
>>
>> }
>>
>> matrix trans_rowtest = rowtest'
>>
>> svmat trans_rowtest
>>
>> graph bar trans_rowtest1, over(var_colnames)
>>
>>
>>
>>
>>
>>
>> 2013/4/3 Nick Cox <[email protected]>
>>>
>>> The easiest way to do this is probably to copy values from your matrix
>>> to a variable and then call up -twoway bar-.
*
* 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/