diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+              GNU GENERAL PUBLIC LICENSE
+                Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+              END OF TERMS AND CONDITIONS
+
+     How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/TaxonomyTools.cabal b/TaxonomyTools.cabal
new file mode 100644
--- /dev/null
+++ b/TaxonomyTools.cabal
@@ -0,0 +1,87 @@
+name:                TaxonomyTools
+-- The package version.  See the Haskell package versioning policy (PVP) 
+-- for standards guiding when and how versions should be incremented.
+-- http://www.haskell.org/haskellwiki/Package_versioning_policy
+-- PVP summary:      +-+------- breaking API changes
+--                   | | +----- non-breaking API additions
+--                   | | | +--- code changes with no API change
+version:             1.0.0
+synopsis:            Tool for parsing, processing, comparing and visualizing taxonomy data
+description:         Taxonomy Tool utilizes functions from the Taxonomy library to provide
+                     .
+                     several commandline utilities for routine-tasks with taxonomy data.
+                     .
+                     Currently some tools accept either the <ftp://ftp.ncbi.nih.gov/pub/taxonomy/ NCBI taxonomy dump> as input,
+                     .
+                     while other retrieve the data directly from the <http://www.ncbi.nlm.nih.gov/gquery/ NCBI Entrez REST> interface.
+                     .
+                     It is planned to support both datasources with each tool.
+		     .
+		     Usage instructions can be found in the <https://github.com/eggzilla/TaxonomyTools README>
+                     .
+                     Currently following Tools are included:
+                     .
+                     * Accessions2TaxIds: 
+                     Converts a list of NCBI accession numbers into NCBI taxonomy ids
+                     .
+                     * TaxIds2Tree: 
+                     List of taxonomy ids is converted into a graphical tree representation
+                     either as .svg (via graphviz) or as .json (via d3js).
+                     .
+                     * TaxIds2TreeCompare:
+                     Multiple lists of taxonomy ids are converted into a visualisation of the
+                     taxonomic tree highlighting the input nodes corresponding to their list.
+                     .
+                     * TaxIds2Text: 
+                     List of taxonomy ids is converted in a short text summary for each node.
+                     .
+                     * TreeDistance: 
+                     Computes the distance between two input nodes on the given tree.
+                     
+license:             GPL-3
+license-file:        LICENSE
+author:              Florian Eggenhofer
+maintainer:          egg@tbi.univie.ac.at
+-- copyright:           
+category:            Bioinformatics
+build-type:          Simple
+cabal-version:       >=1.8
+
+source-repository head
+  type:     git
+  location: https://github.com/eggzilla/TaxonomyTools
+
+source-repository this
+  type:     git
+  location: https://github.com/eggzilla/TaxonomyTools/tree/1.0.0
+  tag:      1.0.0
+
+executable TaxIds2Text
+  Hs-Source-Dirs:      ./src/Bio/
+  main-is:	       TaxIds2Text.hs
+  ghc-options:         -Wall -O2
+  build-depends:       base >=4.5 && <5, cmdargs, Taxonomy, either-unwrap, fgl, bytestring
+
+executable Accessions2TaxIds
+  Hs-Source-Dirs:      ./src/Bio/
+  main-is:	       Accessions2TaxIds.hs
+  ghc-options:         -Wall -O2 -fno-warn-unused-do-bind
+  build-depends:       base >=4.5 && <5, cmdargs, process, directory, Taxonomy, either-unwrap, fgl, cassava, vector, bytestring, parsec, EntrezHTTP, hxt
+
+executable TaxIds2TreeCompare
+  Hs-Source-Dirs:      ./src/Bio/
+  main-is:	       TaxIds2TreeCompare.hs
+  ghc-options:         -Wall -O2    
+  build-depends:       base >=4.5 && <5, cmdargs, process, directory, Taxonomy, either-unwrap, fgl, cassava, vector, bytestring
+
+executable TaxIds2Tree
+  Hs-Source-Dirs:      ./src/Bio/
+  main-is:	       TaxIds2Tree.hs
+  ghc-options:         -Wall -O2 
+  build-depends:       base >=4.5 && <5, cmdargs, process, directory, Taxonomy, either-unwrap, fgl, cassava, vector, bytestring, aeson
+
+executable TaxIdsDistance
+  Hs-Source-Dirs:      ./src/Bio/
+  main-is:	       TaxIdsDistance.hs
+  ghc-options:         -Wall -O2
+  build-depends:       base >=4.5 && <5, cmdargs, process, directory, Taxonomy, either-unwrap, fgl, vector, bytestring
diff --git a/src/Bio/Accessions2TaxIds.hs b/src/Bio/Accessions2TaxIds.hs
new file mode 100644
--- /dev/null
+++ b/src/Bio/Accessions2TaxIds.hs
@@ -0,0 +1,110 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE Arrows #-}
+
+--dist/build/Accessions2TaxIds/Accessions2TaxIds -i /scratch/egg/AccessionList > ~egg/TaxidOut
+
+module Main where
+    
+import System.Console.CmdArgs    
+import Text.ParserCombinators.Parsec
+import Data.List
+import Data.Either.Unwrap
+import Control.Concurrent
+import Bio.EntrezHTTP
+import Text.XML.HXT.Core  
+ 
+data Options = Options            
+  { inputFilePath :: String
+  } deriving (Show,Data,Typeable)
+
+options :: Options            
+options = Options
+  { inputFilePath = def &= name "i" &= help "Path to input accession file containing taxids seperated by linebreaks."
+  } &= summary "Accessions2TaxIds" &= help "Florian Eggenhofer - 2015" &= verbosity   
+  
+main :: IO [()]    
+main = do
+  Options{..} <- cmdArgs options       
+  accessionsFile <- readFile inputFilePath
+  let accessions = lines accessionsFile
+  gis <- retrieveGIsEntrez accessions
+  taxIds <- retrieveTaxIdsEntrez gis
+  mapM putStrLn (map show taxIds)
+
+
+retrieveTaxIdsEntrez :: [Int] -> IO [Int]
+retrieveTaxIdsEntrez geneIds = do
+  taxIdsOutput <- retrieveElementsEntrez geneIds retrieveTaxIdEntrez
+  let taxids = concatMap readEntrezTaxId taxIdsOutput
+  return taxids
+
+retrieveGIsEntrez :: [String] -> IO [Int]
+retrieveGIsEntrez accessions = do
+  gisOutput <- retrieveElementsEntrez accessions retrieveGIEntrez
+  let parsedGisOutput = map parseGIfromEntrez gisOutput
+  let gis = concatMap fromRight parsedGisOutput
+  return gis
+
+retrieveGIEntrez :: [String] -> IO String
+retrieveGIEntrez accessions = do
+       let idList = intercalate "," accessions
+       let query' = "retmax=400&term=" ++ idList
+       let entrezQuery = EntrezHTTPQuery (Just "esearch") (Just "nucleotide") query'
+       threadDelay 10000000                  
+       result <- entrezHTTP entrezQuery
+       return result
+
+parseGIfromEntrez :: String -> Either ParseError [Int]
+parseGIfromEntrez input = parse genParserGIfromEntrez "genParserGIfromEntrez" input
+
+genParserGIfromEntrez :: GenParser Char st [Int]
+genParserGIfromEntrez = do
+  string "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE eSearchResult PUBLIC \"-//NLM//DTD esearch 20060628//EN\" \"http://eutils.ncbi.nlm.nih.gov/eutils/dtd/20060628/esearch.dtd\">\n"
+  string "<eSearchResult><Count>"
+  many1 digit
+  string "</Count><RetMax>"
+  many1 digit 
+  string "</RetMax><RetStart>"
+  many1 digit
+  string "</RetStart><IdList>\n"
+  gis <- many1 (Text.ParserCombinators.Parsec.try parseGI)
+  string "</IdList><TranslationSet/><QueryTranslation/></eSearchResult>"
+  return gis
+
+parseGI :: GenParser Char st Int
+parseGI = do
+  string "<Id>"
+  gi <- many1 digit
+  string "</Id>\n"
+  return (readInt gi)
+  
+retrieveTaxIdEntrez :: [Int] -> IO String
+retrieveTaxIdEntrez geneIds = do
+  let geneIdStrings = map show geneIds
+  let idList = intercalate "," geneIdStrings
+  let query' = "id=" ++ idList
+  let entrezQuery = EntrezHTTPQuery (Just "esummary") (Just "nucleotide") query'
+  threadDelay 10000000                  
+  result <- entrezHTTP entrezQuery
+  return result
+
+readEntrezTaxId :: String -> [Int]
+readEntrezTaxId input = runLA (xreadDoc >>> getEntrezTaxId) input
+
+getEntrezTaxId :: ArrowXml a => a XmlTree Int
+getEntrezTaxId = getChildren >>> atTag "DocSum" >>>
+  proc entrezDocSum -> do
+  taxId <- atName "TaxId" >>> getChildren >>> getText -< entrezDocSum
+  returnA -< read taxId :: Int
+             
+readInt :: String -> Int
+readInt = read
+
+-- | gets all subtrees with the specified tag name
+atTag :: ArrowXml a =>  String -> a XmlTree XmlTree
+atTag tag = deep (isElem >>> hasName tag)
+
+atName :: ArrowXml a => String -> a XmlTree XmlTree
+atName elementId = deep (isElem >>> hasAttrValue "Name" (== elementId))
+
diff --git a/src/Bio/TaxIds2Text.hs b/src/Bio/TaxIds2Text.hs
new file mode 100644
--- /dev/null
+++ b/src/Bio/TaxIds2Text.hs
@@ -0,0 +1,55 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE Arrows #-}
+
+-- ./dist/build/TaxIds2Text/TaxIds2Text -t /home/mescalin/egg/current/Projects/Haskell/TaxonomyTools/RF00169_accessionnumbers.tax -r Phylum -i /scratch/egg/taxdmpnew/ > out.csv
+module Main where
+    
+import System.Console.CmdArgs    
+import Data.Either.Unwrap
+import qualified Data.ByteString.Char8 as BC
+import Bio.Taxonomy
+import Data.Maybe
+import Text.Read
+
+data Options = Options            
+  { taxDumpDirectoryPath :: String,
+    taxonomicRank :: String,
+    taxNodeListFilePath :: String
+  } deriving (Show,Data,Typeable)
+             
+options :: Options
+options = Options
+  { taxDumpDirectoryPath = def &= name "i" &= help "Path to input NCBI taxonomy dump files directory",
+    taxonomicRank = "Class" &= name "r" &= help "Requested taxonomic rank - default Class",
+    taxNodeListFilePath = def &= name "t" &= help "Path to input taxonomy id list without header"
+  } &= summary "TaxIds2Text - List of taxonomy ids is converted in a short text summary for each node." &= help "Florian Eggenhofer - 2015" &= verbosity   
+        
+main :: IO ()
+main = do
+  Options{..} <- cmdArgs options
+  graphOutput <- readNamedTaxonomy taxDumpDirectoryPath
+  let currentRank = readMaybeRank taxonomicRank 
+  if isNothing currentRank
+    then putStrLn "Please provide a valid taxonomic Rank (e.g. Class)."
+    else do
+      if isLeft graphOutput 
+       then print ("Could not parse provided taxonomy dump files" ++ show (fromLeft graphOutput))
+       else do 
+         if null taxNodeListFilePath 
+           then do 
+             putStrLn "Provide a path to input taxonomy id list or to RNAlienResult CSV."
+           else  do -- input taxid path present
+             taxidtable <- readFile taxNodeListFilePath
+             let taxidtableentries = map (\l -> read l :: Int) (lines taxidtable)
+             let graph = fromRight graphOutput
+             let maybeParentNodes = map (\taxidtableentry -> getParentbyRank taxidtableentry graph (Just Phylum)) taxidtableentries
+             let parentNodeStrings = map (\maybeParentNode -> maybe "not found,not found" (\(_,n) ->  printSimpleNode n) maybeParentNode) maybeParentNodes
+             let outputCSV = map (\(txid,parentNodeString) -> (show txid) ++ "," ++ parentNodeString)   (zip taxidtableentries parentNodeStrings)
+             mapM_ putStrLn outputCSV
+
+printSimpleNode :: SimpleTaxon -> String 
+printSimpleNode snode = show (simpleRank snode) ++ "," ++ BC.unpack (simpleScientificName snode)
+
+readMaybeRank :: String -> Maybe Rank
+readMaybeRank inputString = readMaybe inputString
diff --git a/src/Bio/TaxIds2Tree.hs b/src/Bio/TaxIds2Tree.hs
new file mode 100644
--- /dev/null
+++ b/src/Bio/TaxIds2Tree.hs
@@ -0,0 +1,97 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+-- | TaxIds2Tree
+-- dist/build/TaxIds2Tree/TaxIds2Tree -i /scratch/egg/data/taxdump/ -o /home/mescalin/egg/current/Projects/Haskell/TaxonomyTools/ -t /home/mescalin/egg/current/Projects/Haskell/TaxonomyTools/RF00169_accessionnumbers.tax -f json -l 4
+-- dot -Tsvg taxonomy.dot -o taxonomy.svg
+module Main where
+
+import Prelude 
+import System.Console.CmdArgs    
+import Bio.Taxonomy
+import Data.Either.Unwrap
+import Data.Graph.Inductive
+import Data.Csv
+import qualified Data.Vector as V
+import qualified Data.ByteString.Lazy.Char8 as L
+import Data.Char
+import qualified Data.Aeson.Encode as E
+--------------------------------------------------------
+
+data Options = Options            
+  { taxDumpDirectoryPath :: String,
+    taxNodeListFilePath :: String,
+    alienCSVFilePath ::String,
+    levels :: Int,
+    outputFormat :: String,
+    outputDirectoryPath :: String
+  } deriving (Show,Data,Typeable)
+
+options :: Options
+options = Options
+  { taxDumpDirectoryPath = def &= name "i" &= help "Path to input NCBI taxonomy dump files directory",
+    taxNodeListFilePath = def &= name "t" &= help "Path to input taxonomy id list without header",
+    alienCSVFilePath = def &= name "r" &= help "Path to RNAlienResult CSV. Alternative to input taxonomy id list",
+    levels = (1 ::Int) &= name "l" &= help "Number defining maximum distance from root for nodes in subtree.",
+    outputFormat = "dot" &= name "f" &= help "Requested output format (json,dot). Default: dot",
+    outputDirectoryPath = def &= name "o" &= help "Path to output directory"
+  } &= summary "TaxIds2Tree -  List of taxonomy ids is converted into a graphical tree representation either as .svg (via graphviz) or as .json (via d3js)" &= help "Florian Eggenhofer - 2015" &= verbosity   
+
+main :: IO ()
+main = do
+  Options{..} <- cmdArgs options
+  graphOutput <- readNamedTaxonomy taxDumpDirectoryPath
+  if isLeft graphOutput then 
+    print ("Could not parse provided taxonomy dump files" ++ show (fromLeft graphOutput))
+    else   
+    do if null taxNodeListFilePath then
+         do if null alienCSVFilePath then
+              putStrLn "Provide a path to input taxonomy id list or to RNAlienResult CSV."
+              else 
+              do -- input AlienCSV path present
+                taxidtableentries <- extractTaxidsAlienCSV alienCSVFilePath
+                let graph = fromRight graphOutput
+                let currentSubgraph = extractTaxonomySubTreebyLevel taxidtableentries graph (Just levels)                
+                --let subdiagram = drawTaxonomy (grev currentSubgraph)
+                --writeFile (outputDirectoryPath ++ "taxonomy.dot") subdiagram
+                generateOutput outputFormat outputDirectoryPath currentSubgraph
+         else 
+         do -- input taxid path present
+            taxidtable <- readFile taxNodeListFilePath
+            let taxidtableentries = map (\l -> read l :: Int) (lines taxidtable)
+            let graph = fromRight graphOutput
+            let currentSubgraph  = extractTaxonomySubTreebyLevel taxidtableentries graph (Just levels)                
+            --let subdiagram = drawTaxonomy (grev currentSubgraph)
+            --writeFile (outputDirectoryPath ++ "taxonomy.dot") subdiagram
+            generateOutput outputFormat outputDirectoryPath currentSubgraph
+
+-- | generate output
+generateOutput :: String -> String -> Gr SimpleTaxon Double -> IO ()
+generateOutput requestedFormat outputDirectoryPath inputGraph = do
+  case requestedFormat of
+    "dot" -> generateDotOutput outputDirectoryPath inputGraph
+    "json" -> generateJsonOutput outputDirectoryPath inputGraph
+    _ -> generateDotOutput outputDirectoryPath inputGraph
+
+
+generateDotOutput :: String -> Gr SimpleTaxon Double -> IO ()
+generateDotOutput outputDirectoryPath inputGraph = do
+  let diagram = drawTaxonomy (grev inputGraph)
+  writeFile (outputDirectoryPath ++ "taxonomy.dot") diagram
+  
+
+generateJsonOutput :: String -> Gr SimpleTaxon Double -> IO ()
+generateJsonOutput outputDirectoryPath inputGraph = do
+  let jsonOutput = E.encode (grev inputGraph)
+  L.writeFile (outputDirectoryPath ++ "taxonomy.json") jsonOutput
+
+
+-- | Extract taxids from RNAlien result.csv 
+extractTaxidsAlienCSV :: String -> IO [Node]
+extractTaxidsAlienCSV alienCSVPath = do
+  let myOptions = defaultDecodeOptions {
+         decDelimiter = fromIntegral (ord ';')
+         }
+  inputCSV <- L.readFile alienCSVPath
+  let decodedCsvOutput = V.toList (fromRight (decodeWith myOptions HasHeader inputCSV :: Either String (V.Vector (Int,L.ByteString,L.ByteString))))
+  let taxnodes = map (\(a,_,_) -> a :: Node) decodedCsvOutput
+  return taxnodes 
diff --git a/src/Bio/TaxIds2TreeCompare.hs b/src/Bio/TaxIds2TreeCompare.hs
new file mode 100644
--- /dev/null
+++ b/src/Bio/TaxIds2TreeCompare.hs
@@ -0,0 +1,61 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+-- | TaxIds2TreeCompare  
+-- dist/build/TaxIds2TreeCompare/TaxIds2TreeCompare -i /scratch/egg/taxdmpnew/ -l 4 -t /home/mescalin/egg/current/Projects/Haskell/TaxonomyTools/input.csv -o /home/mescalin/egg/current/Projects/Haskell/TaxonomyTools/
+-- dot -Tsvg comparison.dot -o comparison.svg
+module Main where
+
+import Prelude 
+import System.Console.CmdArgs    
+import Bio.Taxonomy
+import Data.Either.Unwrap
+import Data.Graph.Inductive
+import Data.Csv
+import qualified Data.Vector as V
+import qualified Data.ByteString.Lazy.Char8 as L
+import Data.Char
+--------------------------------------------------------
+
+data Options = Options            
+  { taxDumpDirectoryPath :: String,
+    taxNodeCSVFilePath :: String,
+    levels :: Int,                      
+    outputDirectoryPath :: String
+  } deriving (Show,Data,Typeable)
+
+options :: Options
+options = Options
+  { taxDumpDirectoryPath = def &= name "i" &= help "Path to input NCBI taxonomy dump files directory",
+    taxNodeCSVFilePath = def &= name "t" &= help "Path to input taxonomy csv, each column with comma separated taxids represents one tree",
+    levels = (1 ::Int) &= name "l" &= help "Number defining maximum distance from root for nodes in subtree.",
+    outputDirectoryPath = def &= name "o" &= help "Path to output directory"
+  } &= summary "TaxIds2TreeCompare - Multiple lists of taxonomy ids are converted into a visualisation of the taxonomic tree highlighting the input nodes corresponding to their list." &= help "Florian Eggenhofer - 2015" &= verbosity   
+
+main :: IO ()
+main = do
+  Options{..} <- cmdArgs options
+  graphOutput <- readNamedTaxonomy taxDumpDirectoryPath
+  if (isLeft graphOutput)
+     then do
+       print ("Could not parse provided taxonomy dump files" ++ show (fromLeft graphOutput))
+     else do 
+       let graph = fromRight graphOutput
+       treesTaxids <- extractTreesTaxidsCSV taxNodeCSVFilePath
+       let subgraphs  = map (\treeTaxids -> extractTaxonomySubTreebyLevel treeTaxids graph (Just levels)) treesTaxids
+       let comparisonGraph = compareSubTrees subgraphs
+       let treeComparison = drawTreeComparison comparisonGraph
+       writeFile (outputDirectoryPath ++ "comparison.dot") treeComparison
+      
+-- | Extract taxids from RNAlien result.csv 
+extractTreesTaxidsCSV :: String -> IO [[Node]]
+extractTreesTaxidsCSV treesCSVPath = do
+  let myOptions = defaultDecodeOptions {
+         decDelimiter = fromIntegral (ord ',')
+         }
+  inputCSV <- L.readFile treesCSVPath
+  let decodedCsvOutput = V.toList (fromRight (decodeWith myOptions NoHeader inputCSV :: Either String (V.Vector ([Int]))))
+  --print (fromLeft (decodeWith myOptions NoHeader inputCSV :: Either String (V.Vector ([Int]))))
+  let treesTaxids = decodedCsvOutput
+  return treesTaxids 
+  --return [[]]
+
diff --git a/src/Bio/TaxIdsDistance.hs b/src/Bio/TaxIdsDistance.hs
new file mode 100644
--- /dev/null
+++ b/src/Bio/TaxIdsDistance.hs
@@ -0,0 +1,35 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+-- | TaxonomyTools
+-- dist/build/TaxIdsDistance/TaxIdsDistance -i /scratch/egg/data/taxdump/ -a 9986 -b 4039
+module Main where
+
+import Prelude 
+import System.Console.CmdArgs    
+import Bio.Taxonomy
+import Data.Either.Unwrap
+import Data.Graph.Inductive
+--------------------------------------------------------
+
+data Options = Options            
+  { taxDumpDirectoryPath :: String,
+    organism1 :: Int,
+    organism2 :: Int
+  } deriving (Show,Data,Typeable)
+
+options :: Options
+options = Options
+  { taxDumpDirectoryPath = def &= name "i" &= help "Path to input NCBI taxonomy dump files directory",
+    organism1 = def &= name "a" &= help "NCBI Taxonomy Id of the first organism",
+    organism2 = def &= name "b" &= help "NCBI Taxonomy Id of the second organism"
+  } &= summary "TaxIdsDistance - Computes the distance between two input nodes on the given tree." &= help "Florian Eggenhofer - 2015" &= verbosity   
+
+main :: IO ()
+main = do
+  Options{..} <- cmdArgs options
+  graphOutput <- readNamedTaxonomy taxDumpDirectoryPath
+  if isLeft graphOutput then 
+    print ("Could not parse provided taxonomy dump files" ++ show (fromLeft graphOutput))
+    else   
+    do let distance = sp (organism1 :: Node) (organism2 :: Node) (undir (fromRight graphOutput))
+       print (length distance)
