[Rd] "What Calls What" diagram. Flow Chart?

[William Dunlap]

Have you tried using trace()?  E.g.,
  > library(lavaan)
  > trace(lavaan)
  >  HS.model <- ' visual  =~ x1 + x2 + x3
  +                    textual =~ x4 + x5 + x6
  +                    speed   =~ x7 + x8 + x9 '
  >      
  >      fit <- cfa(HS.model, data=HolzingerSwineford1939)
  trace: lavaan(model.syntax = HS.model, data = HolzingerSwineford1939, 
      model.type = "cfa", int.ov.free = TRUE, int.lv.free = FALSE, 
      auto.fix.first = TRUE, auto.fix.single = TRUE, auto.var = TRUE, 
      auto.cov.lv.x = TRUE, auto.cov.y = TRUE)
or, to see who is calling what and what eval is evaluating,
  > trace(lavaan, quote(cat(sapply(sys.calls(), function(e)deparse(e)[1]), sep="\n   ")))
  Tracing function "lavaan" in package "lavaan"
  [1] "lavaan"
  > trace(eval, quote(cat("   ", deparse(expr), "\n")))
  Tracing function "eval" in package "base"
  [1] "eval"
  >  HS.model <- ' visual  =~ x1 + x2 + x3
  +                    textual =~ x4 + x5 + x6
  +                    speed   =~ x7 + x8 + x9 '
  >      
  >      fit <- cfa(HS.model, data=HolzingerSwineford1939)
  Tracing eval(mc, parent.frame()) on entry 
      lavaan(model.syntax = HS.model, data = HolzingerSwineford1939,      model.type = "cfa", int.ov.free = TRUE, int.lv.free = FALSE,      auto.fix.first =   TRUE, auto.fix.single = TRUE, auto.var = TRUE,      auto.cov.lv.x = TRUE, auto.cov.y = TRUE) 
Tracing lavaan(model.syntax = HS.model, data = HolzingerSwineford1939,  .... on entry 
  cfa(HS.model, data = HolzingerSwineford1939)
     eval(mc, parent.frame())
     eval(expr, envir, enclos)
     lavaan(model.syntax = HS.model, data = HolzingerSwineford1939, 
     .doTrace(cat(sapply(sys.calls(), function(e) deparse(e)[1]), 
     eval.parent(exprObj)
     eval(expr, p)
     eval(expr, envir, enclos)
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~visual 
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~x1 + x2 + x3 
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~textual 
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~x4 + x5 + x6 
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~speed 
  Tracing eval(parse(text = x)[[1L]]) on entry 
      ~x7 + x8 + x9 
  Tracing eval(formal.args[[deparse(substitute(arg))]]) on entry 
      c("no", "ifany", "always") 
  Tracing eval(formal.args[[deparse(substitute(arg))]]) on entry 
      c("shell", "quick", "radix") 
  Tracing eval(formal.args[[deparse(substitute(arg))]]) on entry 
      c("pearson", "kendall", "spearman")

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 

> -----Original Message-----
> From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r-project.org] On Behalf Of Paul Johnson
> Sent: Monday, October 10, 2011 8:31 AM
> To: Mark.Bravington at csiro.au; R Devel List
> Subject: Re: [Rd] "What Calls What" diagram. Flow Chart?
> 
> On Sun, Oct 9, 2011 at 5:29 PM,  <Mark.Bravington at csiro.au> wrote:
> > Hi Paul
> >
> > Have you tried
> >
> > mvbutils::foodweb( where=asNamespace( 'lavaan'))
> >
> > (assuming lavaan has a namespace, otherwise where='package:lavaan')?
> >
> > Sounds like it's what you're after--
> >
> > Mark
> >
> Thanks, Mark. The foodweb graph for lavaan is a bit overwhelming.
> 
> The graph shows everything it finds that might be called any time, it
> doesn't help me trace the path of a specific user call to a particular
> function. So I'm not entirely sure it is doing what I hope for.
> 
> While matching the graph against the source code, it seems to me some
> R language idioms can confuse/break the foodweb.  When eval is called
> on a string object, then I think function calls can escape detection.
> In the cfa example code I put in the original post, the function
> "lavaan" is called by eval, and as far as I can tell in the foodweb
> output, that connection is not found.
> 
> I'm still studying your package, of course, but here's (I think) an
> example, I know "cfa" does call "lavaan" though eval, but this code
> 
> library(lavaan)
> library(mvbutils)
> mvbutils::foodweb( where=asNamespace( 'lavaan'))
> 
> myfw <- mvbutils::foodweb( where=asNamespace( 'lavaan'))
> 
> callers.of("lavaan", myfw)
> 
> 
> > [1] "independence.model"      "independence.model.fit"
> [3] "independence.model.fit2" "setLavaanOptions"
> 
> 
> 
> 
> --
> Paul E. Johnson
> Professor, Political Science
> 1541 Lilac Lane, Room 504
> University of Kansas
> 
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