Julia Roizemberg Bahiana // CVUT - Winter Semester - 2016/2017 // CAD 5 - GIS - Mgr. Jirí Čtyroký
PROPOSAL
The theme chosen to be analyzed in this
Geoprocessing analysis via ArcGIS software was the
suitability of areas in Prague, Czech Republic, for retail
locations. The elements used to classify if certain
areas, divided in a map with the city borroughs limits,
are suitable for retail business location are metro
entrances spots, limits of flooded areas, quiet parks,
noisy parks, presence of infrastructure, cultural spaces
or elements, whether its close or far from the city
center, and negative or positive residential areas. In
this specific case, quiet parks are negative elements
because they are empty and not attractive for the retail
business for the lack of variety of people spending
money at the place - and this rule applies for the noisy
parks in opposite way -. In the case of residential
areas, they are considered negative areas when the
urban zoning by Institute of Planning and Development
of the City of Prague refers to them as purely residenial
areas, which means that the space is not suitable for
retails in anyway. The rule also applies for the
opposite, positive residential areas, with generally
mixed use. The elements also have different measures
as they have divese levels of importance.
PROPOSAL
Import the layer of city borroughs of Prague.
Import the layer of metro entrances in Prague.
Import the land use map of Prague
Import all the layers of analyzed items
The city borroughs limits layer is
important for the comparison
between suitability in each district.
The metro entrances layer shows
how accessible the areas are. The
land use map of Prague is relevant
for the information of density and
type of occupation in each area.
ELEMENTS
Metro
Metro entrance is essential for commute
with huge potential opportunity for
purchasing, so we process 500 m metro
buffer as a element here, and give the points
+1.
ELEMENTS
City Center
City is essential for commute with huge
potential opportunity for purchasing for the amount of people around, so
we process 500 m buffer
as a element here, and give the points +1.
ELEMENTS
Flood
Flood is a very negative aspect of the
territory for it may cause physical inabilty to
ocuppy the space with the retail business so
we give the points -1..
ELEMENTS
High Density
We considered the highest density of data in city of
Prague as a big amount of points for the calculation as
these are the places where most people can be found
and that increases the opportunity of sales.
This item is constituted by places with density higher
than 60.
So we give points +3.
ELEMENTS
Medium Density
The following maps show density in lower numbers on
the map of the city. For them we considered the
correspondent number of points.
The medium density map is given +2 points.
ELEMENTS
Lower Density
The following maps show density in lower numbers on
the map of the city. For them we considered the
correspondent number of points.
The lower density map is given +1 points.
PS: This density is not the lowest but lower than
medium.
ELEMENTS
Sum of Density
Just as we considered the highest density of
data in city of Prague as being the highest
point, the other three averages of density
continued descending the number of points
and so, in that way we get the map of sum of
areas with the calculation of points.
Definition of
Query Builder
for the map of
density with
relevant
numbers for
the analysis.
ELEMENTS
Positive Residential Areas
Positive Residential Areas are more detailed
and dense, but still essential for commute
with big potential opportunity for
purchasing, so we process 250 m buffer as
a element here, and give the points +1.
ELEMENTS
Negative Residential Areas
The same is considered for the negative
residential areas, but in opposite values, so
we process 250 m buffer as a element here,
and give the points -1.
ELEMENTS
Quiet Park
The quiet parks are also negative elements
because of the previously explanation on
how they are quiet because of the lack of
people doing a great variety of activities. In
addition, they are also influences for the
surroundings in a very detailed way, which,
so we process 250 m buffer as a element
here, and give the points -1.
ELEMENTS
Noisy Park
Because the noisy parks represent a big
potential opportunity for purchasing, so we
process 250 m buffer as a element here, and
give the points +1.
ELEMENTS
Infrastructures
The infrastructures are more detailed and
dense elements, - such as hospitals and
schols - but still essential for commute with
big potential opportunity for purchasing,
because it attracts people for the sake of
necessity, so we process 250 m buffer as a
element here, and give the points +1.
ELEMENTS
Cultural
Because the cultural places - such as
churches and bridges - are a big potential
opportunity for purchasing, because it
attracts easily, and are relatively small and
isolated spots, we process 250 m buffer as
a element here, and give the points +1.
CALCULATION
The calculation was made by exporting a new layer called union that would serve as the base for the result map in
which buffered, geoprocessing tool, items with different points – shown previously in this portfolio –, according to their
relevance, were summed up. The field calculator opened in union’s attribute table is shown below.
RESULT
According to the calculations based on the different points given to the chosen items, a result map with the levels of suitability
of retail locations in Prague was created. As it’s clear, the highest points are located in the city’s center, near or inside Old
Town Square. For some reason, areas far north and far south were given the lowest points, and so, should be considered
negative areas for a retail business. In conclusion, the more concentrated to the literal center of the city, the more suitable for a
retail business the location is.
N