TreeMap Example
by dixie on Date unknown
Tagged as: data, app, lib, tree.
treemap-html is Haskell library and tools for construction foldable HTML tree view.
For the details about real Treemaps see Wikipedia Treemapping
To be honest the library doesn’t construct the real treemap with sizes of rectangles on the map based on some node weight parameters. It is only nested boxes tree view and package names are unfortunately misleading.
On Linux use HackageDB as usually.
On MS Windows you can use also binaries, see dirmap.exe and xml2treemap.exe.
$ cabal install treemap-html
$ cabal install treemap-html-tools
Please be aware that it is an experimental throw away software.
The function treeMap takes the Data.Tree with the String nodes and render it to the String with HTML elements.
Simple example which explain it:
import Text.HTML.TreeMap
import Data.Tree
exampleTree :: Tree String
exampleTree = Node "Slovakia" [
Node "Bratislava" [
Node "Petrzalka" []
],
Node "Zilina" [
Node "Hajik" [
Node "Mr. Cirman" []
]
]
]
main = putStrLn (treeMap exampleTree)
Screen shot from Firefox (unfolded with clicks on the labels):
TreeMap Example
Two basic commands provided:
dirmapxml2treemapCreates tree view from the directory content.
Usage:
Usage: dirmap [OPTION...] directory
-v --verbose verbose output on stderr
-l Integer --level=Integer maxlevel for recursive directory listing
-n Integer --name=Integer maximum size of filename. than truncation.
-o FILE --output=FILE output FILE
-f --files include files in listing
-e do not included subtrees without files
Example usage:
$ dirmap -f -n 1000 -l 2 -o libs_l2.html /usr/lib
Creates tree view from the XML.
Usage:
Usage: xml2treemap [OPTION...] <input file.xml>
-v --verbose verbose output on stderr
-o FILE --output=FILE output FILE
Example usage:
$ xml2treemap -o map.xml /usr/share/dbus-1/interfaces/org.kde.KWin.xml
The boxes are unfolded with mouse click on their text labels.
Linux source code dirmap
Hackage DB modules dirmap
Ant Build XML with xml2treemap