Hi there,
I'm looking at how neuroticism ("per_neurot_y1f") predicts later change in symptoms of anxiety (from Time 1 to Time 3). I'm not sure why I'm getting this error message about this particular string of my model. Here's my code.
manifests <- c("Time1newanxiety", "Time3anxiety", "per_neurot_y1f") latents<-"F1" myModelstep2<-mxModel(model="Step two", type="RAM", manifestVars=manifests, latentVars=latents, mxPath(from="Time1newanxiety", to="Time3anxiety", arrows=1, free=FALSE, values=1, labels=c("L1")), mxPath(from = "F1", to = "Time3anxiety", arrows=1, free=FALSE , values=1, labels=c("L2")), mxPath(from ="Time1newanxiety", to = "F1", arrows = 2, free=TRUE, values = .4, labels=c("L3")), mxPath(from = "per_neurot_y1f", to "Time1newanxiety", arrows=2, free=TRUE, values=.6, labels=c("L4")), mxPath(from = "per_neurot_y1f", to "F1", arrows = 1, free=TRUE, values = .3, labels=c("L5")), mxPath(from = "F1", to = "F1", arrows = 2, free=TRUE, values = 1, labels=c("e1")), mxPath(from = "Time1newanxiety", to = "Time1newanxiety", arrows=2, free=TRUE, values = .8, labels=c("e2")), mxPath(from "per_neurot_y1f", to "per_neurot_y1f", arrows = 2, free=TRUE, values = 1, labels=c("e3")), mxPath(from = "one", to = "Time1newanxiety", arrows=1, free=TRUE, values = 7.36, labels=c("manxiety1")), mxPath(from = "one", to = "F1", arrows=1, free=TRUE, values = .1, labels=c("mchangeanxiety")), mxPath(from = "one", to "per_neurot_y1f", arrows = 1, free=TRUE, values = 8.83, labels=c("mneurot")), mxData(observed=mydata3, type="raw"))
Error: unexpected string constant in "labels=c("L1")), mxPath(from = "F1", to = "Time3anxiety", arrows=1, free=FALSE , values=1, labels=c("L2")), mxPath(from ="Time1newanxiety", to = "F1", arrows = 2, free=TRUE, values = .4, label"
I'm not seeing how that string is really that different from any other part of the mode. I was able to run a more simple version of this model just creating a latent difference score of change in anxiety from Time 1 to Time 3, without adding "per_neurot_y1f," so I don't understand why the same code from that old model now is a problem.
Any help would be greatly appreciated!
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The L5 line wasn't indented so you can't see it in the original post. Here's a better formatted version
myModelstep2<-mxModel(model="Step two", type="RAM", manifestVars=manifests, latentVars=latents,
mxPath(from="Time1newanxiety", to="Time3anxiety", arrows=1, free=FALSE, values=1, labels=c("L1")),
mxPath(from = "F1", to = "Time3anxiety", arrows=1, free=FALSE , values=1, labels=c("L2")),
mxPath(from ="Time1newanxiety", to = "F1", arrows = 2, free=TRUE, values = .4, labels=c("L3")),
mxPath(from = "per_neurot_y1f", to "Time1newanxiety", arrows=2, free=TRUE, values=.6, labels=c("L4")),
mxPath(from = "per_neurot_y1f", to "F1", arrows = 1, free=TRUE, values = .3, labels=c("L5")),
mxPath(from = "F1", to = "F1", arrows = 2, free=TRUE, values = 1, labels=c("e1")),
mxPath(from = "Time1newanxiety", to = "Time1newanxiety", arrows=2, free=TRUE, values = .8, labels=c("e2")),
mxPath(from "per_neurot_y1f", to "per_neurot_y1f", arrows = 2, free=TRUE, values = 1, labels=c("e3")),
mxPath(from = "one", to = "Time1newanxiety", arrows=1, free=TRUE, values = 7.36, labels=c("manxiety1")),
mxPath(from = "one", to = "F1", arrows=1, free=TRUE, values = .1, labels=c("mchangeanxiety")),
mxPath(from = "one", to "per_neurot_y1f", arrows = 1, free=TRUE, values = 8.83, labels=c("mneurot")),
mxData(observed=mydata3, type="raw"))
There are four calls to
mxPath()in that syntax that don't have an equals sign between named argumenttoand its intended value.There's also an equals sign missing after
fromin one of the calls as well.You're missing the '=' after 'to'. You have
to "Time1newanxiety"instead ofto="Time1newanxiety"Thank you! Whoops that was silly of me! I was so focused on the part that the error message pointed my attention to that I forgot to double check the rest of my code.