begin ex01

ex01.Rmd

@@ -12,25 +12,23 @@ library(DataExplorer)
 library(raster)
 library(rworldmap)
 library(sp)
-# TODO library(sf)
+library(sf) # https://aur.archlinux.org/packages/udunits
 ```
 
-## R Markdown
+## Croatian Destinations
+Write an R script that creates a map of Croatia. On
+the map, mark 3 places you would like to visit.
+Use the rworldmap library. Use Geonames to obtain
+coordinates: https://www.geonames.org
 
-This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see <http://rmarkdown.rstudio.com>.
 
-When you click the **Knit** button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:
-
-```{r cars}
-summary(cars)
-```
-
-## Including Plots
-
-You can also embed plots, for example:
-
-```{r pressure, echo=FALSE}
-plot(pressure)
-```
-
-Note that the `echo = FALSE` parameter was added to the code chunk to prevent printing of the R code that generated the plot.
+```{r croatia}
+library(rworldmap)
+world <- getMap(resolution = "low")
+plot(world, xlim = c(20, 30), ylim = c(35, 71)
+     , asp = 1
+     , col = "white"
+     ,bg = "lightblue",        # background (sea) color
+)
+#points(airports$lon, airports$lat, col = "red", cex = .6)
+```