CN106909692A - It is a kind of to calculate the method that urban public utilities cover radiation index - Google Patents
It is a kind of to calculate the method that urban public utilities cover radiation index Download PDFInfo
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Abstract
The method that urban public utilities cover radiation index is calculated the invention discloses a kind of, it is comprised the following steps：Step S1, acquisition urban basic data, and urban basic data is imported in file geographical data bank；Step S2, vacuate population space point-like data；Step S3, structure Network data set；Step S4, establishment OD Cost matrixes；Step S5, fractionation field and relating attribute；Step S6, the service provision amount citizen requirement amount ratio that service point is calculated by service position；Step S7, the service provision amount citizen requirement amount ratio that settlement place is calculated by resident's position；Step S8, collect urban public utilities covering radiation index and draw communal facility covering radiation index map.Covering radiation index by calculating the urban public utilities such as school in the range of certain radius, hospital, cultural facility of the invention, reflects the balance degree of urban public utilities, embodies service ability of the urban public utilities in the range of certain space.
Description
Technical field
The present invention relates to a kind of urban public utilities planing method, and in particular to one kind calculates urban public utilities covering spoke
The method for penetrating index, belongs to urban planning and geographic information system technology field.
Background technology
Urban public utilities are the support carriers of urban society's sex service industry, are for citizen provide each of Public Service Product
Public character, service equipment are planted, education, health care, culture, physical culture, traffic, social welfare and guarantee, administration is specifically included
The facility such as management and the service of community service, post and telecommunications and trade financing.Public service facility is growing for meeting people
Material and culture life needs and General Promotion quality of the life play vital effect.Therefore, public service facility
Impartial disposition just turns into the important goal of its planning and layout, especially under the Policy Background of basic public services equalization,
This target seems even more important.
The existing evaluation balanced method of communal facility is typically all to be realized by calculating spatial accessibility, mainly
It is several below：(1) rule of three, the method calculates Service Source total amount (facility quantity, quantity of service etc.) and service population total amount
Ratio, ratio is bigger, and accessibility is better；(2) minimum distance method, it is assumed that resident selects closest communal facility all the time,
Distance is nearer, and accessibility is better；(3) Hu Fu (Huff) modelling.
But, rule of three cannot disclose larger research unit internal reachability change, be suitable only for evaluating the area of communal facility
Distributional difference between domain (such as different provinces, city, county)；Minimum distance method have ignored resident and the other factors such as facility scale examined
Consider, and with the improvement of traffic network and trip mode, the consideration of factor of being adjusted the distance during resident's selection facility by
Gradually decline；Hu Fu (Huff) modelling is more abstract, it is more difficult to understand, while expressing going out for facility and demand point range attenuation relation
Row coefficient of friction is difficult to determine.
The content of the invention
For the deficiency of existing evaluation communal facility harmony method, in order to realize the impartial disposition of urban public utilities
With the target of distributing equilibrium, the present invention provides and a kind of effectively calculates such as school, hospital and cultural and recreational facilities city is public sets
The method for applying covering radiation index, reasonably considers the trans-regional sex chromosome mosaicism acted between people and communal facility, is not only suitable for
Intra-zone is also applied between region, it is visual and understandable, can exactly evaluate a service radiation for the communal facility in city
Scope, service ability and harmony.
The technical scheme adopted by the invention to solve the technical problem is that：One kind calculates urban public utilities covering radiation and refers to
Several methods, it is characterized in that：Comprise the following steps：
Step S1, acquisition urban basic data, and urban basic data is imported in file geographical data bank；
Step S2, vacuate population space point-like data；
Step S3, structure Network data set；
Step S4, establishment OD Cost matrixes；
Step S5, fractionation field and relating attribute；
Step S6, service provision amount-citizen requirement amount ratio that service point is calculated by service position；
Step S7, service provision amount-citizen requirement amount ratio that settlement place is calculated by resident's position；
Step S8, collect urban public utilities covering radiation index and draw communal facility covering radiation index map.
In step sl, the urban basic data includes following spatial data：Urban public utilities, road, settlement place
Border, population and administrative division, the file geographical data bank are the file geographical data bank of ArcGIS softwares.
In step s 2, the population met under certain communal facility action condition is filtered out first, by minimum settlement place
Borderline region carrys out piecemeal, then settlement place borderline region is carried out to be divided into multiple grids, and all population points of each grid are gathered
Collect on the central point of the grid.
The step S2 specifically includes following steps：
(1) demographic data of the screening age in certain interval；
(2) population factor data collection is divided by minimum settlement place borderline region；
(3) each settlement place borderline region is divided into several quadrangles；
(4) its all population point for including is found to each quadrilateral area R；
(5) the population point included to each quadrilateral area R, calculates the centre coordinate position P (X of the quadrilateral areaR,
YR) and total number of people N, total population attribute is appended in center point P and stored.
The step S3 specifically includes following steps：
(1) a factor data collection for sky is created；
(2) road data in region created factor data is imported into concentrate, and the georeferencing of road is necessary
Georeferencing with factor data collection is consistent；
(3) relevant parameter is set, Network data set is built；The relative parameters setting of the Network data set is as follows：Set
Network data set title；Turn type is not built, elevation field is not used, do not set up travel direction, at the coincidence end of line feature
Set up at point connective；Addition attribute " length Length ", unit is set to rice.
The step S4 specifically includes following steps：
(1) Network data set class is obtained；
(2) title of OD Cost matrix figure layers is set；
(3) it is Length to set impedance cost nature, and hunting zone is 3000 meters；
(4) it is residential feature class to set starting point, and setting destination is service point factor kind；
(5) Network data set is solved；
The form of the Name field property value in line feature generic attribute in the OD Cost matrixes figure layer is r-s, wherein r
It is the title of settlement place, s is the title of service point；Name will be included in the attribute of residential feature class and service point factor kind
Necessary supply attribute is included in field, and service point factor kind attribute list.
Supply attribute in the service point factor kind includes that crew size, city are public needed for urban public utilities operation
Facility quantity and urban public utilities area, specifically used which index determine according to the type of urban public utilities, false
As urban public utilities be school or hospital, then the supply attribute in service point factor kind can be run for urban public utilities
One of which or multinomial in required crew size (service number) and urban public utilities area；If urban public utilities are text
Change recreational facilities, then the supply attribute in service point factor kind can be urban public utilities operation required service number, city
One of which or multinomial in city's communal facility quantity and urban public utilities area.
The computational methods of the supply in the service point factor kind are：
If supply attribute uses an index, supply
In formula, C is supply, and to refer to target value, X is the summation that this refers to target value in city to x.
If supply attribute uses many index, supply
In formula, C is supply, and n is the number of supply ATTRIBUTE INDEX, and xi refers to target value for i-th, and X is i-th in city
Refer to the summation of target value.
In step s 5, the Name field in the line feature generic attribute of OD Cost matrixes is split into two parts, and by two
The property value of point field is associated with line feature class；The step S5 specifically includes following steps：
(1) the line feature class L in OD Cost matrix figure layers is preserved；
(2) line feature class L additions field R and field S；
(3) property value for splitting the Name field of line feature class L is r and s two parts；
(4) new field attribute assignment, settlement place title R is entered as r, and service point title S is entered as s；
(5) line feature class L is associated with residential feature class according to the property value of field R, line feature class L and service point key element
Class is associated according to the property value of field S.The purpose for splitting field and relating attribute is to be wanted from OD Cost matrixes figure layer, settlement place
Useful information, and the contact set up between them are extracted in plain class and service point factor kind.
In step s 6, the citizen requirement amount in each service point threshold range is counted respectively, by the connection of citizen requirement amount
To in line feature class L attribute lists, the ratio between service provision amount and citizen requirement amount is calculated by communal facility position；The step
Rapid S6 specifically includes following steps：
(1) add field citizen requirement amount in service point factor kind attribute list and field supply requirement compares SR；
(2) to each the service point key element F in service point factor kindi, reading service point key element FiService point title NiWith
The supply C of urban public utilitiesi；
(3) to the field S of the line feature class L of OD Cost matrixes, by property value and service point key element in attribute query field S
NiThe all elements combination Fs of value identical；
(4) to each key element Fs in Fsj, obtain FsjService number P in the range of serving thresholdj；
(5) citizen requirement amount is calculated, and is stored, the computing formula of the citizen requirement amount is：
In formula, SiIt is i-th citizen requirement amount of service point, n is the sum of key element in Fs, PjIt is j-th key element in Fs
Service number；
(6) the service provision amount-citizen requirement amount ratio in service point threshold range is calculated, and is stored, the service point
The computing formula of the service provision amount-citizen requirement amount ratio in threshold range is：
In formula, SRiIt is i-th supply and demand ratio of service point, CiIt is i-th supply of service point, SiIt is i-th residential area
Citizen requirement amount.
In the step s 7, the ratio data of service provision amount and citizen requirement amount is collected by resident's position, is obtained public
Covering radiation index result of the facility to all residents；The step S7 specifically includes following steps：
(1) field covering radiation index A is added in residential feature generic attribute table；
(2) to each residential feature F of residential feature classi, read FiSettlement place title Ni；
(3) to the field R of the line feature class L of OD Cost matrixes, by property value and residential feature in attribute query field R
NiThe all elements combination Fs of value identical；
(4) to each key element Fs of Fsj, obtain FsjSupply requirement compare SRj；
(5) F is calculatediCovering radiation index, the computing formula of the covering radiation index is：
In formula, AiIt is i-th covering radiation index of key element in Fs, n is the sum of key element in Fs, SRjFor j-th in Fs
The supply requirement ratio of key element.
Preferably, in step s3, the Network data set is created or passed through by Arc Engine secondary development
The instrument of ArcGIS softwares is created；
In step s 4, OD Cost matrixes are built or by the work of ArcGIS softwares by Arc Engine secondary development
Have to create；
In step s 8, communal facility covering radiation index special topic ground is drawn using the ArcMap softwares of ArcGIS platforms
Figure.
The beneficial effects of the invention are as follows：The present invention is by calculating the cities such as school in the range of certain radius, hospital, cultural facility
The covering radiation index of city's communal facility, reflects the balance degree of urban public utilities, embodies urban public utilities certain
Service ability in spatial dimension.
What the present invention proposed a kind of population space point-like data vacuates method, vacuates in method and public is set for specific
The service object colony that type filters out different age group is applied, the data of invalid redundancy are eliminated, makes result of calculation more accurate.
Come, to population piecemeal, to reduce EMS memory occupation during data processing by minimum administrative area border.All people in each quadrangle
Mouth point is gathered a bit, solves the problems, such as the population spatial distribution of inherence, and number is further reduced in the case where precision is ensured
According to amount, computational efficiency is improve.
The present invention proposes a kind of method for calculating urban public utilities covering radiation index, and the method is first with service point
Relation between factor kind and OD Cost matrixes line charts layer is calculated between the service provision amount of service point and citizen requirement amount
Ratio, then find out the corresponding all service points in each residential area on this basis, by resident's position collect service provision amount and
The ratio data of citizen requirement amount, then obtains covering radiation index result of the communal facility to all residents.
Compared to the existing evaluation balanced method of communal facility, the present invention takes full advantage of the 6th census and the
The once available data (as long as meeting data demand, other data sources can also) of geographical national conditions generaI investigation, it is contemplated that different zones
In the complicated between the two interaction of Supply and Demand, be both applicable and region between, be also applied for intra-zone unit.And
And, search of the present invention to communal facility spans Administrative boundaries, more reasonably considers and make between people and urban public utilities
Trans-regional sex chromosome mosaicism.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is the method flow diagram for vacuating population space point-like data of the present invention；
Fig. 3 is the method flow diagram of calculating service provision amount-citizen requirement amount ratio of the present invention；
Fig. 4 is the method flow diagram for vacuating population space point-like data of the present invention.
Specific embodiment
For the technical characterstic for illustrating this programme can be understood, below by specific embodiment, and its accompanying drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used for realizing different knots of the invention
Structure.In order to simplify disclosure of the invention, hereinafter the part and setting to specific examples are described.Additionally, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relation between various embodiments being discussed and/or being set.It should be noted that part illustrated in the accompanying drawings is not necessarily to scale
Draw.Present invention omits the description to known assemblies and treatment technology and process avoiding being unnecessarily limiting the present invention.
For the deficiency of existing evaluation communal facility harmony method, in order to realize the impartial disposition of urban public utilities
With the target of distributing equilibrium, the present invention reasonably consider between people and communal facility act on trans-regional sex chromosome mosaicism, be both applicable
Intra-zone is also applied between region, it is visual and understandable, can exactly evaluate a service spoke for the communal facility in city
Penetrate scope, service ability and harmony.
As shown in figure 1, a kind of method for calculating urban public utilities covering radiation index of the invention, the calculating city
The method of communal facility covering radiation index is mainly used in level of coverage measurement to determine the deficient area of city public services, with
Just administrative department is helped preferably to delimit public service shortage area, formulate suitable planning and effective public policy, method
Comprise the following steps：
Step S1, acquisition urban basic data, and urban basic data is imported in file geographical data bank；
Step S2, vacuate population space point-like data；
Step S3, structure Network data set；
Step S4, establishment OD Cost matrixes；
Step S5, fractionation field and relating attribute；
Step S6, service provision amount-citizen requirement amount ratio that service point is calculated by service position；
Step S7, service provision amount-citizen requirement amount ratio that settlement place is calculated by resident's position；
Step S8, collect urban public utilities covering radiation index and draw communal facility covering radiation index map.
It is of the present invention including such as school, hospital and cultural and recreational facilities etc., come detailed by taking school of primary school as an example below
The description present invention calculates the method that urban public utilities cover radiation index.As shown in Figures 1 to 4, a kind of calculating of the invention
The method that primary school covers radiation index, comprises the following steps：
The spatial datas such as S1, acquisition primary school, road, settlement place border, population and administrative division, and these data are imported
In the file geographical data bank of ArcGIS softwares.
S2, vacuate population point-like data；
Due to the enormous amount of population point-like spatial data, consumption internal memory is more and the calculating time is long, therefore, be to population point
Data are vacuated, to improve program efficiency.The present invention use it is subregional vacuate method, data-handling efficiency is good, energy
Meet required precision, as shown in Fig. 2 its to vacuate process as follows：
The demographic data of S21, screening age in certain (such as primary school selects 6~12 years old) interval；
S22, borderline region (such as street, cell) the division population factor data collection by minimum；
S23, several quadrangles are divided into certain borderline region, travel through all borderline regions；
S24, its all population point for including is found to certain quadrangle R, travel through all quadrangles；
S25, the population point included to certain quadrangle R, calculate its center coordinate position P (XR, YR) and total number of people N,
And store, travel through all quadrangles.
S3, structure Network data set；
Arc Engine be one it is simple, independently of the Arc Objects programmed environments of application program, for set up from
The complete class libraries of of the Embedded GIS component of definition application.Interface of the present invention based on Arc Engine offers is come structure
Establishing network data set.
S31, establishment factor data collection；
S32, importing road Road data.The factor data that road data in region imported into establishment is concentrated, and road
The georeferencing on road must be consistent with the georeferencing of factor data collection；
S33, setting relevant parameter, build Network data set.
Network data set is carried out according to being used as network source and the key element with connectivity policy associated with it and attribute
Build, its specific building process is as follows：
S331, the working space for obtaining road data；
S332, the New-deployed Network data set class in working space, set Network data set title；
S333, addition participate in the road factor kind of network data concentration；
S334, network data are concentrated and do not build turn type, and elevation field is not used, do not set up travel direction, online
Set up at the coincidence end points of element connective；
S335, network data concentrate addition attribute " length (Length) ", and unit is set to rice.
S4, establishment OD Cost matrixes；
Starting-destination (OD) Cost matrix is used for searching and measuring in network from multiple starting points to multiple points of destination
Water channel principium, the present invention uses length cost, and OD Cost matrixes are created based on the interface of Arc Engine offers.
It is as follows that it creates process：
S41, acquisition Network data set class；
S42, the title that OD Cost matrix figure layers are set；
S43, setting impedance cost nature are Length, and hunting zone is 3000 meters；
S44, setting starting point be residential feature class, settings destination be service point factor kind, residential feature class with
Name field will be included in the attribute of service point factor kind；
S45, solution Network data set.
S5, fractionation field and relating attribute；
The form of the Name field property value in the line feature generic attribute of the OD Cost matrixes created in step S4 is r-s,
Wherein r is the title of settlement place, and s is the title of service point, and Name field is split into two parts accordingly.Split field and associate category
Property purpose is that useful information is extracted from OD Cost matrixes figure layer, residential feature class and service point factor kind, and is set up
Contact between them.Its step is as follows：
S51, the line feature class L preserved in OD Cost matrix figure layers；
S52, line feature class L add field R and field S；
S53, the property value of the Name field for splitting line feature class L are r and s two parts；
S54, new field attribute assignment, R are entered as r, and S is entered as s；
S55, line feature class L are associated with residential feature class according to the property value of field R (i.e. settlement place title), L kimonos
Business point factor kind is associated according to the property value of field S (i.e. service point title).
S6, calculate service provision amount-citizen requirement amount ratio by service position；
Field supply requirement is added in S61, service point factor kind attribute list and compares SR；
S62, to certain the service point key element F in service point factor kindi, read FiService point title NiWith supply Ci；
S63, the field S to the line feature class L of OD Cost matrixes, by attribute query itself and NiThe value all key elements of identical
Fs；
S64, to certain key element Fs in Fsj, obtain FsjService number P in the range of serving thresholdj；
S65, repeat step S64, all key elements in traversal Fs；
S66, calculating citizen requirement amountWherein n is the sum of key element in Fs, PjFor j-th will in Fs
The service number of element；
S67, the service provision amount-citizen requirement amount ratio calculated in service point threshold range
S68, repeat step S62-S67, all of service point key element in traverse service point factor kind.
S7, collect service provision amount-citizen requirement amount ratio by resident's position；
S71, the addition field covering radiation index A in residential feature generic attribute table；
S72, certain residential feature F to residential feature classi, read FiSettlement place title Ni；
S73, the field R to the line feature class L of OD Cost matrixes, by attribute query itself and NiThe value all key elements of identical
Fs；
S74, certain key element Fs to Fsj, obtain FsjSupply requirement compare SRj(by step S4, line feature class L can be with
Obtain service provision amount-citizen requirement amount ratio SR that S6 is calculated)；
S75, repeat step S73, all key elements in traversal Fs；
S76, calculating FiCovering radiation indexWherein n is the sum of key element in Fs, SRjFor in Fs
J-th supply requirement ratio of key element；
S77, repeat step S72-S76, all key elements in traversal residential feature class.
S8, drafting communal facility covering radiation index thematic maps, using the figure layer of the ArcMap softwares of ArcGIS platforms
The notation of attribute, public setting is drawn to the ratio data of service provision amount-citizen requirement amount using classification Color method
Apply covering radiation index thematic maps
Additionally, range of application of the invention is not limited to technique, mechanism, the system of the specific embodiment described in specification
Make, material composition, means, method and step.From the disclosure, will be easy as one of ordinary skill in the art
Ground understands, for current technique that is existing or will developing later, mechanism, manufacture, material composition, means, method or
Step, the knot that the function or acquisition that wherein their execution are substantially the same with the corresponding embodiment of present invention description are substantially the same
Really, they can be applied according to the present invention.Therefore, appended claims of the present invention are intended to these techniques, mechanism, system
Make, material composition, means, method or step are included in its protection domain.
Claims (10)
1. it is a kind of to calculate the method that urban public utilities cover radiation index, it is characterized in that：Comprise the following steps：
Step S1, acquisition urban basic data, and urban basic data is imported in file geographical data bank；
Step S2, vacuate population space point-like data；
Step S3, structure Network data set；
Step S4, establishment OD Cost matrixes；
Step S5, fractionation field and relating attribute；
Step S6, service provision amount-citizen requirement amount ratio that service point is calculated by service position；
Step S7, service provision amount-citizen requirement amount ratio that settlement place is calculated by resident's position；
Step S8, collect urban public utilities covering radiation index and draw communal facility covering radiation index map.
2. the method that a kind of calculating urban public utilities according to claim 1 cover radiation index, it is characterized in that, in step
In rapid S1, the urban basic data includes following spatial data：Urban public utilities, road, settlement place border, population and row
Administrative division is drawn, and the file geographical data bank is the file geographical data bank of ArcGIS softwares.
3. the method that a kind of calculating urban public utilities according to claim 2 cover radiation index, it is characterized in that, in step
In rapid S2, the population met under certain communal facility action condition is filtered out first, it is divided by minimum settlement place borderline region
Block, then settlement place borderline region is carried out to be divided into multiple grids, all population points of each grid are gathered the grid
On central point.
4. the method that a kind of calculating urban public utilities according to claim 3 cover radiation index, it is characterized in that, it is described
Step S2 specifically includes following steps：
(1) demographic data of the screening age in certain interval；
(2) population factor data collection is divided by minimum settlement place borderline region；
(3) each settlement place borderline region is divided into several quadrangles；
(4) its all population point for including is found to each quadrilateral area R；
(5) the population point included to each quadrilateral area R, calculates the centre coordinate position P (X of the quadrilateral areaR, YR) and
Total number of people N, total population attribute is appended in center point P and stored.
5. the method that a kind of calculating urban public utilities according to claim 4 cover radiation index, it is characterized in that, it is described
Step S3 specifically includes following steps：
(1) a factor data collection for sky is created；
(2) road data in region created factor data is imported into concentrate, and road georeferencing must with will
The georeferencing of plain data set is consistent；
(3) relevant parameter is set, Network data set is built；The relative parameters setting of the Network data set is as follows：Network is set
Dataset name；Turn type is not built, elevation field is not used, do not set up travel direction, at the coincidence end points of line feature
Set up connective；Addition attribute " length Length ", unit is set to rice.
6. the method that a kind of calculating urban public utilities according to claim 5 cover radiation index, it is characterized in that, it is described
Step S4 specifically includes following steps：
(1) Network data set class is obtained；
(2) title of OD Cost matrix figure layers is set；
(3) it is Length to set impedance cost nature, and hunting zone is 3000 meters；
(4) it is residential feature class to set starting point, and setting destination is service point factor kind；
(5) Network data set is solved；
The form of the Name field property value in line feature generic attribute in the OD Cost matrixes figure layer is r-s, and wherein r is residence
The title on people ground, s is the title of service point；Name words will be included in the attribute of residential feature class and service point factor kind
Section, and necessary supply attribute is included in service point factor kind attribute list.
7. the method that a kind of calculating urban public utilities according to claim 6 cover radiation index, it is characterized in that, in step
In rapid S5, the Name field in the line feature generic attribute of OD Cost matrixes is split into two parts, and by the attribute of two parts field
Value is associated with line feature class；The step S5 specifically includes following steps：
(1) the line feature class L in OD Cost matrix figure layers is preserved；
(2) line feature class L additions field R and field S；
(3) property value for splitting the Name field of line feature class L is r and s two parts；
(4) new field attribute assignment, settlement place title R is entered as r, and service point title S is entered as s；
(5) line feature class L is associated with residential feature class according to the property value of field R, line feature class L and service point factor kind root
Associated according to the property value of field S.
8. the method that a kind of calculating urban public utilities according to claim 7 cover radiation index, it is characterized in that, in step
In rapid S6, the citizen requirement amount in each service point threshold range is counted respectively, citizen requirement amount is connected to line feature class L category
Property table in, calculate the ratio between service provision amount and citizen requirement amount by communal facility position；The step S6 is specifically included
Following steps：
(1) add field citizen requirement amount in service point factor kind attribute list and field supply requirement compares SR；
(2) to each the service point key element F in service point factor kindi, reading service point key element FiService point title NiAnd city
The supply C of communal facilityi；
(3) to the field S of the line feature class L of OD Cost matrixes, by the N of property value and service point key element in attribute query field Si
The all elements combination Fs of value identical；
(4) to each key element Fs in Fsj, obtain FsjService number P in the range of serving thresholdj；
(5) citizen requirement amount is calculated, and is stored, the computing formula of the citizen requirement amount is：
In formula, SiIt is i-th citizen requirement amount of service point, n is the sum of key element in Fs, PjIt is j-th service of key element in Fs
Number；
(6) the service provision amount-citizen requirement amount ratio in service point threshold range is calculated, and is stored, the service point threshold value
In the range of the computing formula of service provision amount-citizen requirement amount ratio be：
In formula, SRiIt is i-th supply and demand ratio of service point, CiIt is i-th supply of service point, SiIt is i-th residence in residential area
People's demand.
9. the method that a kind of calculating urban public utilities according to claim 8 cover radiation index, it is characterized in that, in step
In rapid S7, the ratio data of service provision amount and citizen requirement amount is collected by resident's position, obtain communal facility to all residences
The covering radiation index result of the people；The step S7 specifically includes following steps：
(1) field covering radiation index A is added in residential feature generic attribute table；
(2) to each residential feature F of residential feature classi, read FiSettlement place title Ni；
(3) to the field R of the line feature class L of OD Cost matrixes, by the N of property value and residential feature in attribute query field Ri
The all elements combination Fs of value identical；
(4) to each key element Fs of Fsj, obtain FsjSupply requirement compare SRj；
(5) F is calculatediCovering radiation index, the computing formula of the covering radiation index is：
In formula, AiIt is i-th covering radiation index of key element in Fs, n is the sum of key element in Fs, SRjIt is j-th key element in Fs
Supply requirement ratio.
10. the method that a kind of calculating urban public utilities according to claim 1 to 9 any one cover radiation index,
It is characterized in that,
In step s3, the Network data set is created or by ArcGIS softwares by Arc Engine secondary development
Instrument is created；
In step s 4, OD Cost matrixes built by Arc Engine secondary development or by the instrument of ArcGIS softwares come
Create；
In step s 8, communal facility covering radiation index thematic maps is drawn using the ArcMap softwares of ArcGIS platforms.
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