Print available identifiers with a for loop

README.md

@@ -24,7 +24,7 @@ Usage
 ```julia
 TI = training_image(identifier::AbstractString)
 ```
-where `identifier` can be any of the strings listed with the command `GeoStatsImages.available`
+where `identifier` can be any of the strings listed with the command `GeoStatsImages.available()`
 
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 -------

src/database.jl

@@ -12,18 +12,24 @@
 ## ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 ## OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-datadir = joinpath(Pkg.dir(),"GeoStatsImages","src","data")
+datadir = joinpath(Pkg.dir("GeoStatsImages"),"src","data")
 datafiles = filter(s -> ismatch(r".*\.dat", s), readdir(datadir))
 
 database = Dict()
 for fname in datafiles
   push!(database, fname[1:end-4] => joinpath(datadir, fname))
 end
 
-available = sort(collect(keys(database)))
+identifiers = sort(collect(keys(database)))
+
+function available()
+  for identifier in identifiers
+    println(identifier)
+  end
+end
 
 function training_image(identifier::AbstractString)
-  @assert identifier ∈ available "training image not available"
+  @assert identifier ∈ identifiers "training image not available"
 
   datafile = database[identifier]
 

test/runtests.jl

@@ -3,7 +3,7 @@ using Base.Test
 
 @testset "Basic checks" begin
   # all available images loaded as arrays
-  for identifier in GeoStatsImages.available
+  for identifier in GeoStatsImages.identifiers
     @test isa(training_image(identifier), AbstractArray)
   end