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install.packages('rgdal', type = "source", configure.args=c(
    '--with-gdal-config=/Library/Frameworks/GDAL.framework/Programs/gdal-config',
    '--with-proj-include=/Library/Frameworks/PROJ.framework/Headers',
    '--with-proj-lib=/Library/Frameworks/PROJ.framework/unix/lib'))

install.packages('rgeos', type = "source", configure.args=c(
    '--with-gdal-config=/Library/Frameworks/GDAL.framework/Programs/gdal-config',
    '--with-proj-include=/Library/Frameworks/PROJ.framework/Headers',
    '--with-proj-lib=/Library/Frameworks/PROJ.framework/unix/lib'))
    

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conda install gdal
gdalinfo --version
# GDAL 2.1.0, released 2016/04/25

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echo 'export PATH=/Library/Frameworks/GDAL.framework/Programs:$PATH' >> ~/.bash_profile
source ~/.bash_profile

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library(rgdal)
library(rgeos)
library(maptools)

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# Convert from .shp to .geojson files
$ ogr2ogr -skipfailures -f GeoJSON -t_srs crs:84 [filename].geojson [filename].shp
# Convert from .kml to .geojson files
$ ogr2ogr -skipfailures -f GeoJSON -t_srs crs:84 [filename].geojson [filename].kml
# Convert from .kml to .shp files
$ ogr2ogr -skipfailures -f 'ESRI SHAPEFILE' [filename].shp [filename].kml
# Convert from .shp to .kml files
$ ogr2ogr -skipfailures -f KML [filename].kml [filename].shp

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> ogrDrivers()$name
 [1] "AeronavFAA"     "AmigoCloud"     "ARCGEN"         "AVCBin"        
 [5] "AVCE00"         "BNA"            "Carto"          "Cloudant"      
 [9] "CouchDB"        "CSV"            "CSW"            "DGN"           
[13] "DXF"            "EDIGEO"         "ElasticSearch"  "ESRI Shapefile"
[17] "Geoconcept"     "GeoJSON"        "GeoRSS"         "GFT"           
[21] "GML"            "GPKG"           "GPSBabel"       "GPSTrackMaker" 
[25] "GPX"            "HTF"            "HTTP"           "Idrisi"        
[29] "Interlis 1"     "Interlis 2"     "JML"            "JP2OpenJPEG"   
[33] "JPEG2000"       "KML"            "LIBKML"         "MapInfo File"  

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# Get the layers from .kml file
layers <- ogrListLayers('bbmp.kml')[2:198]
i<-1
# Get polygon from first layer
poly.data <- readOGR(dsn="bbmp.kml", layer=layers[1], encoding="utf-8", verbose = F)
n <- length(slot(poly.data, "polygons"))
poly.data <- spChFIDs(poly.data, as.character(i:(i+n-1)))
i <- i + n
# Combine remaining polygons with first polygon
timer_all <- Sys.time()

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# Get the layers from .kml file
layers <- ogrListLayers('bbmp.kml')
# Import layers to a list
timer_all <- Sys.time()
pb <- txtProgressBar(max=length(layers), style = 3)
options(warn=-1) # disable warnings
poly.data <- list()
for (i in 1:length(layers)) {
    poly.data[i] <- readOGR(dsn="bbmp.kml", layer=layers[i], encoding="utf-8", verbose = F)
}

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#plot the first layer
plot(poly.data[[1]])
#plot the other layers
for (i in 2:length(layers)) {
    plot(poly.data[[i]], add=T)
}

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library(httr)
key <- '[your apikey]'
img_url <- '[your image url]'

# Submit an OCR job
request <- POST(url='https://api.havenondemand.com/1/api/async/ocrdocument/v1',
                body = list(apikey = key,
                            url = img_url,
                            mode = 'document_photo'))