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| From | Peter Pressman <pspressman@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Dates displaying as SIF rather than HIF on graphs... |
| Date | Fri, 20 Dec 2013 15:02:47 -0800 |
It worked wonderfully. Thank you! On Fri, Dec 20, 2013 at 7:32 AM, Nick Cox <njcoxstata@gmail.com> wrote: > It is important to keep distinct the ideas of "storage type" and > "display format" (not "display type"). Usually Stata graphs respect > display formats; perhaps what's happening here is that the > superimposition of graphs is causing Stata to give up on that; it's > not noticed that the x variable is identical across graphs. > > Whatever the details, -xlabel()- has a suboption -format()- so start > with the extra option > > xla(, format(%td)) > > You might then need to spell out which dates you want shown and their > precise format. > > See also http://www.stata-journal.com/sjpdf.html?articlenum=gr0030 > > Nick > njcoxstata@gmail.com > > > On 20 December 2013 15:18, Peter Pressman <pspressman@gmail.com> wrote: >> I'm new to Stata, and suspect there's an easy answer to this, but can't >> find one that's quite what I need online despite a couple hours of reading. >> >> Briefly, I'm trying to graph the results of a mixed effects model that >> compares brain volumes within subjects over time. This means that for each >> time, each subject number (PIDN) is associated with at least two volumes of >> interest. >> >> The Date variable is taken directly from an Excel sheet. In Data Browser, >> the dates display as, for example, 1/1/2010. When I describe the variable, >> it's in integer format, with display type %td. >> >> I run the mixed effects models as follows: >> >> *xtset PIDN Date* >> >> *xtmixed Volume1 Date|| PIDN:* >> >> *xtmixed Volume2 Date|| PIDN:* >> >> Having obtained my results, I try to get something of a graphic >> representation. >> >> *tsset LinkID Date, daily* >> >> *label variable Date "date"* >> >> *graph twoway (lfitc Volume1 Date)(lfitci Volume2 Date)(connected Volume1 >> Date, connect(L))(connected Volume 2 Date, connect(L)), name >> (FS5_combinedlong) ///* >> *graph save "FS5_combined_long.gph", replace ///* >> >> I can produce graphs without using tsset, but am including it here because >> it seems necessary to manipulate date formatting based on what I've read. >> >> I am using the variable LinkID in the tsset because this is a variable that >> uniquelyidentifies each observation. It is the only way I've found to avoid >> the "repeated time values" error. Perhaps this is where the trouble lies? >> >> In any route, subsequently trying to use the format command on dates has >> not worked. Every time I graph, I get ugly SIF on my x-axis, with no clear >> way to change it. >> >> All I want is the opportunity to display dates in MDY format on the x-axis. >> How do I make this happen? Thank you! >> * >> * 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/ > * > * 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/ * * 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/