ctFit returns empty object

[MaurizioSicorello]

Hey all,

I tried to fit a cross-lagged model for daily life data (EMA) for the first time, but the output of ctFIT is empty and I'm not able to fix this issue. I would be really happy about any assistance!

Minimal Reproducible Example

Download "ctsem_test.csv" from https://github.com/MaurizioSicorello/SDERSvalid_Analysis

library(ctsem)

df_ctSEM <- read.csv("ctsem_test.csv")

persModel_ct <- ctModel(type="ct",
                        n.latent=3, n.manifest=3,
                        manifestNames=c("affect_valence_PMcen_scaled", "SDERS_Total_PMcen_scaled", "stressors_PMcen_scaled"),
                        latentNames=c("affect", "SDERS", "stressors"),
                        LAMBDA=diag(3),
                        DRIFT=matrix(c(
                          "drift_Affect_Affect",    "drift_Regulation_Affect",    "drift_Stressors_Affect",
                          "drift_Affect_Regulation","drift_Regulation_Regulation","drift_Stressors_Regulation",
                          "drift_Affect_Stressors", "drift_Regulation_Stressors", "drift_Stressors_Stressors"
                        ), 3, 3, byrow = TRUE)) 


persModel_ct_fit <- ctFit(dat=df_ctSEM,
                          ctmodelobj=persModel_ct,
                          dataform="long")

summary(persModel_ct_fit)

In my case, the code returns:

Length Class Mode
0 NULL NULL

Session Info

R version 4.3.2 (2023-10-31 ucrt)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 11 x64 (build 26100)
ctsem_3.10.4

[cdriveraus]

ctFit is a placeholder for original ctsem v1 commands, it should have returned an informative message but a while since I've checked! Check the current manual and tutorials, you want ctStanfit command instead.

…

On Mon, Jul 21, 2025, 12:16 MaurizioSicorello ***@***.***> wrote: Hey all, I tried to fit a cross-lagged model for daily life data (EMA) for the first time, but the output of ctFIT is empty and I' not able to fix this issue. I would be really happy about any assistance on this issue! Minimal Reproducible Example Download "ctsem_test.csv" from https://github.com/MaurizioSicorello/SDERSvalid_Analysis library(ctsem) df_ctSEM <- read.csv("ctsem_test.csv") persModel_ct <- ctModel(type="ct", n.latent=3, n.manifest=3, manifestNames=c("affect_valence_PMcen_scaled", "SDERS_Total_PMcen_scaled", "stressors_PMcen_scaled"), latentNames=c("affect", "SDERS", "stressors"), LAMBDA=diag(3), DRIFT=matrix(c( "drift_Affect_Affect", "drift_Regulation_Affect", "drift_Stressors_Affect", "drift_Affect_Regulation","drift_Regulation_Regulation","drift_Stressors_Regulation", "drift_Affect_Stressors", "drift_Regulation_Stressors", "drift_Stressors_Stressors" ), 3, 3, byrow = TRUE)) persModel_ct_fit <- ctFit(dat=df_ctSEM, ctmodelobj=persModel_ct, dataform="wide") summary(persModel_ct_fit) In my case, the code returns: Length Class Mode 0 NULL NULL — Reply to this email directly, view it on GitHub <#67>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA7LCBMBDBP4QMJVUQTR5HT3JS4ZPAVCNFSM6AAAAACB7M6K3OVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZYGYYTKMRWGE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[MaurizioSicorello]

Thank you, that solved the problem! In case this is relevant: I reached the outdated manual over "vignette('ctsem')".

Best wishes,
Maurizio

[cdriveraus]

Wow you're right, that is a terrible oversight, the updated manual is also a vignette but apparently the reference never got changed, will fix!

…

On Mon, Jul 21, 2025, 17:33 MaurizioSicorello ***@***.***> wrote: Thank you, that solved the problem! In case this is relevant: I reached the outdated manual over "vignette('ctsem')". Best wishes, Maurizio — Reply to this email directly, view it on GitHub <#67 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA7LCBIRP3UCYNVNB276GWL3JUB25AVCNFSM6AAAAACB7M6K3OVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTGOBTGUZTGMQ> . You are receiving this because you commented.Message ID: ***@***.***>

[cdriveraus]

Ahh it's actually a confusing interaction with the ctsemOMX package, I guess you have that installed also right?

…

On Mon, Jul 21, 2025, 17:33 MaurizioSicorello ***@***.***> wrote: Thank you, that solved the problem! In case this is relevant: I reached the outdated manual over "vignette('ctsem')". Best wishes, Maurizio — Reply to this email directly, view it on GitHub <#67 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA7LCBIRP3UCYNVNB276GWL3JUB25AVCNFSM6AAAAACB7M6K3OVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTGOBTGUZTGMQ> . You are receiving this because you commented.Message ID: ***@***.***>

[MaurizioSicorello]

Yes, I have that installed as well!

[cdriveraus]

Thanks, I need to change the name of its vignette then :)

…

On Mon, Jul 21, 2025, 18:00 MaurizioSicorello ***@***.***> wrote: Yes, I have that installed as well! — Reply to this email directly, view it on GitHub <#67 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA7LCBKUBCNCQE44CWOHTKT3JUFCZAVCNFSM6AAAAACB7M6K3OVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTGOBTGU2TQOA> . You are receiving this because you commented.Message ID: ***@***.***>