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CITY CENTER DELIMITATION Olomouc case study

First StatGIS conference. CITY CENTER DELIMITATION Olomouc case study. Jaroslav Burian. First StatGIS conference. CITY CENTER DELIMITATION Olomouc case study. Jaroslav Burian. Introduction. Different ideas about delimitation of city centre

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CITY CENTER DELIMITATION Olomouc case study

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  1. First StatGIS conference CITY CENTER DELIMITATION Olomouc case study Jaroslav Burian

  2. First StatGIS conference CITY CENTER DELIMITATION Olomouc case study Jaroslav Burian

  3. Introduction • Different ideas about delimitation ofcity centre • “Centre is defined as a core district of a city with the most intensive commercial occupancy of an areain where shops, financial and cultural institutions and branch offices of big companies are concentrated.” • An objective delimitation of a city centre is important • For a statistical comparison of parameters and data from different cities

  4. City centre • Research of an inner structure of a city is one of the priorities of the current city geography • In Central Europe delimitation of city centers mostly on a theoretical level • Based on a historical development of a city • Different aproaches • City is divided into a historical centre, an inner city and an outer city • A city centre (old town) isusually represented by a medieval core of a city and its immediate surroundings

  5. Study Area • Olomouc region • 102 000 inhabitants • area over 103 km2

  6. Delimitation of Olomouc City Centre Currently in Use • Several delimitations of the city centre in Olomouc: • The city district Olomouc – centre • The cadastral district Olomouc – city • The basic settlement unit – historical centre • Historical town reserve • The functional area of the inner cityin the municipal plan • The economic subcentre core

  7. City district Olomouc – centreCadastral district Olomouc – city

  8. Economic subcentre coreBasic settlement unit – historical centre

  9. Functional area of the inner city-municipal planHistorical town reserve

  10. Comparison

  11. Delimitationof city centre usingGIS Data • Vector layers in dgn and shp formats in scales from 1:2 000 to 1:10 000 Software • ArsGIS 10 • Repeating Shapes tool for ArcGIS → creation of a regular network of points or polygons in a range specified by a user

  12. Delimitation of City Centre According to Price Map • by means of the price map of Olomouc on the basis of the most expensive pieces of land in the city centre • average price - 1 109.5 CZK/m2 • minimum price - 100 CZK/m2 • maximum price - 9770 CZK/m2 • To delimitate the city centre, pieces of land with price higher than 2 600, 5 000 and 9 000 CZK/m2were selected

  13. Delimitation of City Centre According to Price Map

  14. Delimitation of City Centre According to Density ofServices • Public Services Database • Repeating Shapes tool – several regular polygon grids of various shapes (hexagons, squares, triangles) and sizes were created (hexagonal was the best) • For each individual polygon a number of services in it was counted →5% of the polygons with the highest concentration were selected • The biggest continuous area of polygons comprising the city centre was selected

  15. Different polygon shapes

  16. Delimitation of City Centre According to Density ofServices

  17. Delimitation of City Centre According to Density ofPublic Transportation lines • The city of Olomouc corresponds with a monocentric model of a city - most of the main roads lead to the centre • For each polygon a density of bus and tram lines was calculated → the polygons with the highest density were selected • This method of delimitating the city centre proved to be unsuitable(low density of the lines - the historical centre of Olomouc is a pedestrian zone surrounded by parks)

  18. The density of the public transportation lines in a hexagonal grid, polygons of which have the area of 50 000m2 and 250 000m2 The public transportation system basically bypasses the centre Delimitation of City Centre According to Density ofPublic Transportation Lines

  19. Delimitation of City Centre According to Mental Maps • Mental maps (of Lynch's type) tend to differ significantly with respect to the borders of the city centre • The group of 40 respondents (students of Palacky University) • Drawing the city centre in an aerial photograph of the city according to their individual perception • The data were subsequently summed up using the tools of map algebra in the ArcGIS SW

  20. The result was divided into 5categories; each of these represents an accordance of a given percentage of the students on a particular delimitation The category on which most ofthe respondents agreed (more than 80%) is the smallest one Delimitation of City Centre According to Mental Maps

  21. Delimitation of City Centre According to Mental Maps

  22. Both the appearance and thearea of the two smallest delimitations is similar to the delimitations according to the price map and the density of services Comparison with other delimitation

  23. Conclusion • The best results were achieved when delimitating the centre according to the price map and the density of services and these areasweredelimitatedvery similarly • These areas also corresponded with the mental maps of the inhabitants of the city • These methods are appropriatefordelimitation of the city centre • In comparison with the delimitations already in existence the delimitations acquired in this research were significantly smaller

  24. dr. Jaroslav Burian jaroslav.burian@upol.cz Department of Geoinformatics, Faculty of Science Palacký University, Olomouc, Czech Republic

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