I have several covariates, and interactions between them, as Fixed Effects in a Linear Mixed Model in SPSS. I would like to visualize some of these Fixed Effects. I know that in the case of Fixed Effects added as categorical Factors, I can use EMMEANS; however, this is not an option for covariates. I have tried to save the predicted values, in order to visualize interactions between covariates. I am not sure whether this is a valid way of doing it. Another option for plotting interactions that involve a categorical factor as well, is to request EMMEANS for this categorical factor, with covariates set at different values and display the EMMEANS. Any help would be very much appreciated.
Hi Tieme,
I encountered a similar problem with SPSS several times, but the only solution I came up until now is change software, e.g., to R, which would give you more flexibility in plotting results. If you'd like to explore the R solution, I can contact you with another VU colleague, who could help with that.
Best wishes,
Ewa
Thank you Ewa for your answer! I found a way in SPSS, but I may ask your help (or your colleague's help) another time.
Hi Tieme WP Jans, did you sort this out? Can you share the solution with me too please?
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