GI2014 ppt kozuch_p4b_map_compositions

Map compositions of
Plan4Business Project
KOZHUKH Dzmitry (dmitrii@hsrs.cz)
BERZINS Raitis (raitisbe@gmail.com)
CHARVAT Karel (charvat@ccss.cz )
GI2014 – GI/GIS/GDI – Forum
Open GeoData Movement in Europe of Regions
14. Grenzüberschreitendes Sächsisches GIS – Forum am 29./30. April 2014 in Dresden

Thematic Map Viewer application:
• Available at http://www.whatstheplan.eu/viewer

Objective of Thematic Map Viewer application:
• Enable users of the application to do initial (visual) exploration of data that
can be useful for various decisions related to planning (found factory, buy
summer cottage for family, open a store)

Structure of Thematic Map Viewer:

Catalogue part of Thematic Map Viewer:

Creation of a composition for Thematic Map Viewer:
1) load datato database
2) createWMSservice
3) styleWMSservice
4) combine appropriateWMSservices
5) save composition (*.hsl modification of *.wmc)
Workflow: Tools:
LAYMANor manual with shp2pgsql/ogr2ogr etc.
LAYMAN or manual with mapserver,geoserver
LAYMANor manual with mapserver,geoserver,R
Map Creator
Map Creator

Customized map diagrams with R:

Dot density maps with R:
Package maptools
Function dotsInPolys
Use in pl/r function to create geometry collection of points:
CREATE OR REPLACE FUNCTION dot_density_map(g1 text, s1 integer, v1 integer)
RETURNS geometry AS
$BODY$
library(rgeos)
library(sp)
library(maptools)
d<-readWKT(g1,p4s=CRS(paste('+init=epsg:',s1,sep='')))
dots.rand <- dotsInPolys(d, v1, f="regular", compatible=FALSE)
text_r<-writeWKT(dots.rand)
result <- pg.spi.exec(paste('select st_geomfromtext(',''',text_r,'',',s1,') as geom;'));
return(result$geom)
$BODY$
LANGUAGE plr VOLATILE
Use ST_Union with ST_CollectionExtract functions of PostGIS to make MultiPoint layer

Dot density maps with R:

Techniques of thematic cartography used:
1) Choropleth
2) Structured choropleth
3) Proportional symbols
4) Pie chart diagram maps
5) Square pie chart diagram maps
6) ‘Butterfly’ graph diagram maps
7) Isotype diagram maps
8) Comparative bar diagram maps
9) Pyramid diagram maps
10) Proportional spherical diagram maps
11) Dot density maps
12) Area qualitative maps

Other map examples:

Comparison of Thematic Map Viewer with
other web-map applications:
• L'Atlas Interactif des Régions Européennes (AIRE) (http://aire.ums-
riate.fr/fr#content/index.fr.php)
• Bremen Election Atlas: Federal Elections 2009 (http://www.statistik-
bremen.de/tabellen/wahlen/Wahlatlasbtw2009_english/atlas.html)
• De Nationale Atlas van Nederland – 3e editie
(http://geoserver.itc.nl/NatAtlas/NatAtlasViewer/NatAtlasViewer.html#)
• ESRI Demographic Atlas of USA (http://atlas.esri.com/Atlas/)
• EUROSTAT statistical atlas: Regional yearbook 2013
(http://ec.europa.eu/eurostat/statistical-atlas/gis/viewer/)
• HyperAtlas (http://hypercarte.espon.eu/HyperCarte/)
• Interactive statistical atlas of Slovenia (http://stat.monolit.si/)
• Swiss Statistical Atlas (http://www.atlas.bfs.admin.ch/core/projects/13/de-
de/viewer.htm?13.0.de)

Parameters of comparison:
• Basic map controls
• Way to get information about selected feature
• Layer controls
• Topics of contained maps
• Multiscaling
• Number of contained maps
• Year of the most actual data present in atlas
• Number of cartographic technics used for visualizations

Maps from the other applications:

Differences:
Atlas name Multi-scale Number of maps Number of techniques from thematic cartography used
AIRE atlas
Yes (user selects NUTS level from
drop-down menu)
36
6 (choropleth,proportional symbols, discontinuity lines,
anamorphose(cartogram), grid choropleth, potential isolines)
Bremen Election Atlas
No (with zooming units still the same
and no visible generalization occurs)
33 1 (choropleth)
De Nationale Atlas van
Nederland – 3e editie
No (not even zoomable) 29 2 (choropleth, proportional symbols)
ESRI Demographic Atlas of USA
Yes (with zooming user sees statistics
for smaller administrative units)
20 1 (choropleth)
EUROSTAT statistical atlas:
Regional yearbook 2013
No (each map has definied NUTS level
for which it is made)
78 1 (choropleth)
HyperAtlas
Yes (user selects NUTS level from
drop-down menu)
24 2 (choropleth, proportional symbols)
Interactive statistical atlas of
Slovenia
Yes (user can switch between
regions/municipalities, also clicking on
a region zooms in it's municipalities)
107 2 (choropleth, anamorphose(cartogram))
Swiss Statistical Atlas
Yes (user selects level from drop-down
list)
>2000 3 (choropleth, graduated symbols,pie chart diagram maps)
Thematic Map Viewer
Yes (in vas majority of maps user sees
data for smaller administraive unit with
zooming
47
>10 (choropleth, structured choropleth, proportional symbols, pie chart
diagram maps, square pie chart diagram maps, 'butterfly' graph diagram
maps, isotype diagram maps, comparative bar diagram maps, demographic
pyramid diagram maps, proportional spherical diagram maps, area
qualitative maps, dot density maps)

Biggest difference:
• Number of techniques used

Future improvements of Thematic Map Viewer:
• Evaluating techniques of thematic cartography from the point of view of
visualizing multi-temporal data (WMS-T services) step by step:
• Doing synthetic thematic maps – maps that combine several indicators in
variety of ways (show correlation between indicators, sum of indicators etc.)
and visualize these synthetic measures

Thanks for your attention!

GI2014 ppt kozuch_p4b_map_compositions

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GI2014 ppt kozuch_p4b_map_compositions