Invalid argument at lavaan model

[Neyrian Fernandes]

I am trying to run a cfa in lavaan, but I'am receiving the follow message:

HS.model <- ' visual  =~ x1 + x2 + x3
+               textual =~ x4 + x5 + x6
+               speed   =~ x7 + x8 + x9'
> cfa(HS.model, data=HolzingerSwineford1939)
Error in file(file, "r") : cannot open the connection
In addition: Warning message:
In file(file, "r") : cannot open file ' visual  =~ x1 + x2 + x3
              textual =~ x4 + x5 + x6
              speed   =~ x7 + x8 + x9': Invalid argument

Could anyone help me, please?

[David Adedia]

You need to load the data in lavaan library. If possible extract the individual variables, before modelling.

DMA.

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[Edward Rigdon]

Do you have the lavaan package loaded into your workspace?

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[Christopher David Desjardins]

I am guessing you loaded the sem package as well. You need to unload it or whatever package is conflicting with the cfa() or type lavaan::cfa(). This code reproduces your message

library(lavaan)
library(sem) # tells us cfa() and sem() are masking the functions in lavaan

HS.model <- ' visual  =~ x1 + x2 + x3
              textual =~ x4 + x5 + x6
              speed   =~ x7 + x8 + x9 '

fit <- cfa(HS.model, data=HolzingerSwineford1939)  

# unload the sem package
detach("package:sem", unload = TRUE) 

# works as expected
fit <- cfa(HS.model, data=HolzingerSwineford1939) 

## Alternatively leaving sem loaded
library(lavaan)
library(sem) 

HS.model <- ' visual  =~ x1 + x2 + x3
              textual =~ x4 + x5 + x6
              speed   =~ x7 + x8 + x9 '

fit <- lavaan::cfa(HS.model, data=HolzingerSwineford1939)  # the sem cfa() function masked the lavaan cfa() function

[Christopher David Desjardins]

And I mean you loaded the sem package AFTER the lavaan package.