## ------------------------------------------------------------------------ ## Load other packages library(RWildbook) library(marked) ## ----eval=FALSE---------------------------------------------------------- # ## Extract data for individual A-001 through A-099 # vignette_2_data <- searchWB(username="username", # password="password", # baseURL ="whaleshark.org", # object="Encounter", # individualID=paste0("A-0",rep(0:9,rep(10,10)),rep(0:9,10))[-1]) ## ------------------------------------------------------------------------ data("vignette_2_data",package="RWildbook") head(vignette_2_data)[,c("individualID","location","year","month","day")] ## ------------------------------------------------------------------------ ## Define start and end dates of capture occasions start.dates1 <- paste0(1998:2016,"-01-01") #Define the start.date value end.dates1 <- paste0(1998:2016,"-04-01") #Define the end.date value ## Format data for use in marked markedData1 <- markedData(data = vignette_2_data, varname_of_capturetime = "dateInMilliseconds", varlist = c("individualID"), start.dates = start.dates1, end.dates = NULL, date_format = "%Y-%m-%d", origin = "1970-01-01") ## ------------------------------------------------------------------------ ## Fit simple CJS model in marked markedData1.proc=process.data(markedData1,model="cjs",begin.time=1) markedData1.ddl=make.design.data(markedData1.proc) markedData1.cjs=crm(markedData1.proc,markedData1.ddl,model.parameters=list(Phi=list(formula=~time),p=list(formula=~time))) ## ----fig.width=6,fig.height=4-------------------------------------------- ## Plot parameter estimates plot(1998:2015,markedData1.cjs$results$reals$Phi$estimate, pch=16,col="green", main="Estimated Capture and Survival Probabilities", xlab="Occasion",ylab="Estimate",ylim=c(0,1)) points(1999:2016,markedData1.cjs$results$reals$p$estimate,pch=16,col="blue") legend("bottomright",pch=16,col=c("green","blue"),legend=c("Survival","Capture"))