seawater d18O

[Igaratza Fraile]

I would like to build seawater d18O isoscapes  within the Mediterranean Sea to determine the natal origin of marine organism based on the d18O composition of their calcified structures. 

But I get the following error:

colnames(YOYsum) <- c("source_ID", "lat", "long", "elev", "year", "month", "source_value")

Mediso <- prepsources(data = YOYsum)
MedFit <- isofit(data = Mediso, mean_model_fix = list(elev = F, lat_abs = TRUE))
MedScape <- isoscape(isofit = Mediso)

[1] Building the isoscapes... [1] (this may take a while) Error in if (isofit$mean_fit$spaMM.version != utils::packageVersion(pkg = "spaMM")) { : argument is of length zero

[Alexandre Courtiol]

Hi, welcome to IsoriX,

The issue here is that it should be:

MedScape <- isoscape(isofit = MedFit) and not MedScape <- isoscape(isofit = Mediso).

Best,

Alex

PS: I am on holidays this week (without laptop), so if you encounter more issues, please understand that my answers may be postponed untill next week.