Fix invalid URLs

Per CRAN submission failure

CRAN-RELEASE

@@ -0,0 +1,2 @@
+This package was submitted to CRAN on 2020-10-05.
+Once it is accepted, delete this file and tag the release (commit 985fc8d).

NEWS.md

@@ -53,7 +53,7 @@ Released Sunday, September 16, 2018.
 Released Sunday, June 3, 2018.
 
 ### Improvements
-* Update shape files to [2017 versions](https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html).
+* Update shape files to [2017 versions](https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.2017.html).
 * Improvements to `fips` and `fips_info`:
   * Vectorization support (e.g. enter multiple states in `fips` to receive a vector of corresponding FIPS codes)
   * e.g. `fips(c("AK", "AL"))` or `fips(c("Alaska", "Alabama"))`

R/datasets.R

@@ -156,7 +156,7 @@
 #' @docType data
 #' @references
 #'   \itemize{
-#'     \item \url{https://earthquake.usgs.gov/earthquakes/}
+#'     \item \url{https://www.usgs.gov/natural-hazards/earthquake-hazards/earthquakes}
 #'     \item \url{https://earthquake.usgs.gov/earthquakes/search/}
 #'   }
 #' @keywords data

R/usmap.R

@@ -36,19 +36,18 @@
 #' @author Paolo Di Lorenzo \cr
 #' \itemize{
 #'   \item Email: \email{paolo@@dilorenzo.pl}
-#'   \item Website: \url{http://dilorenzo.pl}
-#'   \item Twitter: \url{http://twitter.com/dilorenzopl}
-#'   \item Github: \url{http://www.github.com/pdil/}
+#'   \item Website: \url{https://dilorenzo.pl}
+#'   \item Github: \url{https://github.com/pdil/}
 #' }
 #'
 #' @seealso
 #' Helpful links:
 #' \itemize{
 #'   \item FIPS code information \cr
-#'     \url{http://en.wikipedia.org/wiki/FIPS_county_code}
-#'     \url{http://en.wikipedia.org/wiki/FIPS_state_code}
+#'     \url{https://en.wikipedia.org/wiki/FIPS_county_code}
+#'     \url{https://en.wikipedia.org/wiki/FIPS_state_code}
 #'   \item US Census Shapefiles \cr
-#'     \url{https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html}
+#'     \url{https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html}
 #'   \item Map Features \cr
 #'     \url{https://en.wikipedia.org/wiki/Map_projection}
 #'     \url{https://en.wikipedia.org/wiki/Albers_projection}

README.md

@@ -9,7 +9,7 @@ View code used to generate these plots: [resources/examples.R](https://github.co
 Typically in R it is difficult to create nice US [choropleths](https://en.wikipedia.org/wiki/Choropleth_map) that include Alaska and Hawaii. The functions presented here attempt to elegantly solve this problem by manually moving these states to a new location and providing a fortified data frame for mapping and visualization. This allows the user to easily add data to color the map.
 
 ## Shape Files
-The shape files that we use to plot the maps in R are located in the `data-raw` folder. For more information refer to the [US Census Bureau](https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html). Maps at both the state and county levels are included for convenience (zip code maps may be included in the future).
+The shape files that we use to plot the maps in R are located in the `data-raw` folder. For more information refer to the [US Census Bureau](https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html). Maps at both the state and county levels are included for convenience (zip code maps may be included in the future).
 
 ## Installation
 To install from CRAN _(recommended)_, run the following code in an R console:
@@ -165,7 +165,7 @@ usmap::usmap_crs()
 
 To obtain the projection used by `usmap`, use `usmap_crs()`.
 
-Alternatively, the CRS ([coordinate reference system](https://www.nceas.ucsb.edu/~frazier/RSpatialGuides/OverviewCoordinateReferenceSystems.pdf)) can be created manually with the following command:
+Alternatively, the CRS ([coordinate reference system](https://www.nceas.ucsb.edu/sites/default/files/2020-04/OverviewCoordinateReferenceSystems.pdf)) can be created manually with the following command:
 ```r
 sp::CRS("+proj=laea +lat_0=45 +lon_0=-100 +x_0=0 +y_0=0
          +a=6370997 +b=6370997 +units=m +no_defs")

cran-comments.md

@@ -1,3 +1,7 @@
+## Resubmission
+This is a resubmission. In this version I have:
+
+* Fixed invalid URLs.
 
 ## Test environments
 * local macOS install, R 4.0.2

vignettes/introduction.Rmd

@@ -75,7 +75,7 @@ usmap::fips_info(c("01001", "01003", "01005", "01007"))
 
 #### Further reading
 
-More information about FIPS can be read [here](http://en.wikipedia.org/wiki/Federal_Information_Processing_Standards).
+More information about FIPS can be read [here](https://en.wikipedia.org/wiki/Federal_Information_Processing_Standards).
 
 ---
 

vignettes/mapping.Rmd

@@ -18,7 +18,7 @@ knitr::opts_chunk$set(
 
 ## Extending `plot_usmap` with `ggplot2`
 
-The nice thing about `usmap::plot_usmap` is it returns a [ggplot object](http://docs.ggplot2.org/current/) object, which means we can add `ggplot` layers to the plot right out of the box.
+The nice thing about `usmap::plot_usmap` is it returns a [ggplot object](https://ggplot2.tidyverse.org/index.html) object, which means we can add `ggplot` layers to the plot right out of the box.
 
 ```{r, fig.align='center', fig.width=7, message=FALSE, warning=FALSE}
 library(usmap)