[Traminer-users] how to sort a sequence plot (seqIplot) by more than one variable

[Joel Schwartz]

Hi Jan,

Yes, that worked. Using the order() function, I created a new, sorted version of the sequence object and got the sort order I wanted. 

Thanks!
Joel

On Jul 19, 2012, at 10:53 AM, Jan Goebel wrote:

> Dear Joel,
> 
> the help page on plot.stslist states that sortv has to be a variable name:
> 
>   sortv: name of an optional variable used to sort the sequences
>          before plotting.
> 
> So my guess is, that you have to create a new variable within your data frame and not to supply an "external" vector.
> 
> However ?seqIplot has in my opinion at least some fuzziness, because here you find:
> "The ‘sortv’ argument can be used to pass a vector of numerical values for sorting the sequences. See ‘plot.stslist’ for a complete list of optional arguments."
> 
> Best wishes,
> 
> Jan
> 
> On 07/17/2012 03:25 PM, Joel Schwartz wrote:
>> Hi Alexis,
>> 
>> I tried your suggestion and for some reason it's not working, even when I create a sorting
>> variable that uses a single variable to sort on. Here's what I did:
>> 
>> # Original version, which works fine. See first attached file below, which shows plot is
>> clearly sorted by f09as.
>> seqIplot(df.seq09, border = NA, withlegend = "right", sortv=df09$f09as)
>> 
>> # Create sorting variable
>> term.sort = order(df09$f09as)
>> 
>> # Create plot again, using sorting variable. This version of the plot is unsorted. See second
>> attached file.
>> seqIplot(df.seq09, border = NA, withlegend = "right", sortv=term.sort)
>> 
>> I checked the sorting variable by looking at what it does to the original data frame and it
>> looked exactly like it should, so the sorting variable doesn't seem to have a problem. Here's
>> the command I used for that: df09[order(df09$f09as), ]
>> 
>> Any idea what could be going wrong? If it would help to look at the sequence object or
>> data.frame I'm working with, I can send those.
>> 
>> Thanks again,
>> Joel
>> 
>> 
>> =
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On Jul 16, 2012, at 12:10 AM, Alexis gabadinho wrote:
>> 
>>> Hi Joel,
>>> 
>>> Use first the order function to create one single sorting variable, and then pass this
>>> variable to the seqIplot function. Here is an example with the biofam data frame where
>>> sequences are sorted by gender and birthyr
>>> 
>>> data(biofam)
>>> biofam.seq <- seqdef(biofam, 10:25)
>>> csort <- order(biofam$sex, biofam$birthyr)
>>> seqIplot(biofam.seq, sortv=csort)
>>> 
>>> All the best,
>>> Alexis
>>> 
>>> 
>>> Le 16. 07. 12 08:12, Joel Schwartz a écrit :
>>>> I'm a new TraMineR user and just ran into a problem while using the seqIplot function. I'm
>>>> making a plot of hundreds of sequences. To make it possible to see patterns, I'm trying to
>>>> sort the sequences by more than one variable. It works as expected when I sort by one
>>>> variable. But when I try to sort by more than one, I get the exact same result as when I
>>>> sort by one variable.
>>>> 
>>>> Here are the two commands I'm using
>>>> 
>>>> # Sort by one variable
>>>> seqIplot(df.seq, border=NA, withlegend="right", sortv=df$s09as)
>>>> 
>>>> # Sort by two variables
>>>> seqIplot(df.seq, border = NA, withlegend="right", sortv=c(df$s09as, df$f09as))
>>>> 
>>>> I get the exact same plot either way, and no warnings or errors.
>>>> 
>>>> Is there a way to sort by more than one variable?
>>>> 
>>>> Thanks for your help.
>>>> 
>>>> Best Wishes,
>>>> Joel Schwartz
>>>> 
>>>> 
>>>> 
>>>> 
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>> 
>> =
>> 
>> 
>> This body part will be downloaded on demand.
>> 
> 
> -- 
> -----------------------------------------
> Dr. Jan Goebel
> Head of the Division
> Data Operation and Research Data Center
> 
> DIW Berlin
> Socio-Economic Panel Study (SOEP)
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