v1.2.13.8 DOC: minor type revision in param optim vignette

DESCRIPTION

 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.2.13.7
+Version: 1.2.13.8
 Date: 2019-04-02
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),

NEWS.rmd

@@ -13,7 +13,7 @@ output:
 
 
 
-### 1.2.13.7 Release Notes (2019-04-02)
+### 1.2.13.8 Release Notes (2019-04-02)
 
 
 

vignettes/V02.1_param_optim.Rmd

@@ -108,7 +108,7 @@ We can then extract the best parameter sets and the value of the performance cri
 ```{r, warning=FALSE, results='hide', eval=FALSE}
 parPORT <- t(sapply(listOptPORT, function(x) x$par))
 objPORT <- sapply(listOptPORT, function(x) x$objective)
-parPORT  <- data.frame(parPORT, RMSE = objPORT)
+parPORT <- data.frame(parPORT, RMSE = objPORT)
 ```
 
 As can be seen below, the optimum performance criterion values (column *objective*) can differ from the global optimum value in many cases, resulting in various parameter sets.