Improve installation experience

DESCRIPTION

@@ -24,10 +24,11 @@ Suggests:
     testthat (>= 1.0.0),
     devtools,
     knitr,
+    raster,
     rmarkdown
 VignetteBuilder: knitr
 SystemRequirements: Python (>= 3.0) (version must be listed to patch to allow parsing)
 License: MIT + file LICENSE
 LazyData: true
-RoxygenNote: 7.1.1
+RoxygenNote: 7.2.3
 Encoding: UTF-8

NAMESPACE

@@ -2,5 +2,9 @@
 
 export(df_model)
 export(get_data)
+export(install_deepforest)
+importFrom(reticulate,conda_remove)
 importFrom(reticulate,import)
+importFrom(reticulate,install_miniconda)
+importFrom(reticulate,py_install)
 importFrom(reticulate,r_to_py)

R/deepforestr.R

@@ -1,9 +1,36 @@
+#' Install the DeepForest Python package
+#'
+#' @examples
+#' \dontrun{
+#' deepforestr::install_deepforest()}
+#'
+#' @importFrom reticulate install_miniconda py_install conda_remove
+#' @export
+install_deepforest <- function() {
+  miniconda_path = reticulate::miniconda_path()
+  if (!dir.exists(miniconda_path)) {
+    reticulate::install_miniconda()
+  } else {
+    print(sprintf("Using existing miniconda install at %s", miniconda_path))
+  }
+  reticulate::py_install(c("gdal", "rasterio", "fiona"), method = "conda")
+  #if (reticulate::py_module_available("mkl")) {
+    # Remove package that has caused conflicts on Windows due to double install
+    # The correct version of mkl will be installed with deepforest (below)
+    # on systems where it is needed
+  #  reticulate::conda_remove("r-reticulate", packages = c("mkl"))
+  #}
+  reticulate::py_install("DeepForest", method = "conda", pip = TRUE)
+}
+
 #' Get example data
 #'
 #' @param path path to the example data file
 #'
 #' @examples
+#' \dontrun{
 #' deepforestr::get_data("OSBS_029.png")
+#' }
 #'
 #' @importFrom reticulate import r_to_py
 #' @export
@@ -12,10 +39,11 @@ get_data <- function(path) {
 }
 
 #' Deepforest Model object
-#' 
-#' @examples
-#' deepforestr::df_model()
 #'
+#' @examples
+#' \dontrun{
+#' model = deepforestr::df_model()
+#' }
 #' @importFrom reticulate import r_to_py
 #' @export
 df_model <- function() {

README.md

@@ -18,13 +18,8 @@ This will create a local Python installation that will only be used by R and ins
 If installing on Windows you need to [install RTools](https://cran.r-project.org/bin/windows/Rtools/) before installing the R package.
 
 ```R
-install.packages('reticulate') # Install R package for interacting with Python
-reticulate::install_miniconda() # Install Python
-reticulate::py_install(c('gdal', 'rasterio', 'fiona')) # Install spatial dependencies via conda
-reticulate::conda_remove('r-reticulate', packages = c('mkl')) # Remove package that causes conflicts on Windows (and maybe macOS)
-reticulate::py_install('DeepForest', pip=TRUE) # Install the Python retriever package
-devtools::install_github('weecology/deepforestr') # Install the R package for running the retriever
-install.packages('raster') # For visualizing output for rasters
+devtools::install_github('weecology/deepforestr') # Install the R package from GitHub
+deepforestr::install_deepforest() # Install Python & DeepForest; Takes ~3 minutes
 ```
 
 **After running these commands restart R.**