阅读说明：本技术 一种市政道路征地房屋统计方法 (Statistical method for municipal road land acquisition houses ) 是由 余波 于 2019-09-30 设计创作，主要内容包括：本发明涉及一种市政道路征地房屋统计方法,包括如下步骤：S1、根据测绘局提供的实测地形图,选择、确定征地拆迁区域；S2、对地形图进行清理,剔除无关联图层,保留房屋图层及其注释；S3、对清理后的地形图进行格式转换,将其导入到GIS软件中；S4、在GIS软件中,对房屋轮廓线进行检测,剔除孤立线段,然后在进行拓扑分析,形成区文件；根据之前导入的房屋注释,对区文件进行属性赋值,并在区文件中建立房屋是否被征用的属性结构；S5、将征地拆迁区域和区文件一起导入到空间分析模块中,进行相交分析以形成相交文件,根据相交文件属性对原房屋区文件进行叠加以得到征地拆迁区域内房屋的成果图纸。使征地拆迁房屋统计变得更加快捷。(The invention relates to a statistical method for municipal road land acquisition houses, which comprises the following steps: s1, selecting and determining land acquisition and removal areas according to the actually measured topographic map provided by the surveying and mapping bureau; s2, cleaning the topographic map, removing the non-related map layers, and reserving the house map layers and the annotations thereof; s3, carrying out format conversion on the cleaned topographic map and importing the topographic map into GIS software; s4, detecting the house contour line in GIS software, eliminating isolated line segments, and then performing topology analysis to form a region file; according to the imported house comments, attribute assignment is carried out on the zone files, and an attribute structure for judging whether the house is imposed or not is established in the zone files; and S5, importing the expropriation and removal area and the area files into a space analysis module, carrying out intersection analysis to form an intersection file, and overlapping the original house area files according to the attributes of the intersection file to obtain a result drawing of the house in the expropriation and removal area. The statistics of expropriating and removing the house becomes faster.)

1. A statistical method for municipal road land acquisition houses is characterized by comprising the following steps:

s1, selecting and determining land acquisition and removal areas according to the actually measured topographic map provided by the surveying and mapping bureau;

s2, cleaning the topographic map, removing the non-related map layers, and reserving the house map layers and the annotations thereof;

s3, carrying out format conversion on the cleaned topographic map and importing the topographic map into GIS software;

s4, detecting the house contour line in GIS software, eliminating isolated line segments, and then performing topology analysis to form a region file; according to the imported house comments, attribute assignment is carried out on the zone files, and an attribute structure for judging whether the house is imposed or not is established in the zone files;

and S5, importing the expropriation and removal area and the area files into a space analysis module, carrying out intersection analysis to form an intersection file, and overlapping the original house area files according to the attributes of the intersection file to obtain a result drawing of the house in the expropriation and removal area.

2. The statistical method of house according to claim 1, wherein the step of establishing a valuation model of the removed house according to a house valuation index system comprises:

selecting six important indexes which have large influence on the price of the house from the aspects of area factors, house structure factors, house age, the number of family members and the like, and establishing a house price evaluation index system;

and constructing a BP network model for evaluating the house price by using a BP neural network according to the house price evaluation index system so as to obtain the mapping relation between the house market price and the influence.

3. The method of claim 2, wherein in step S5, the house area and category in the land seeking area are inversely marked on the result drawing, and the cost statistics are performed to form a house relocation cost report on the result drawing.

4. The statistical method of house of town road expropriation according to claim 3, wherein in step 5, different road routing schemes are reported to different removal costs, and the road routing scheme is determined according to the removal cost report.

5. The statistical method for the municipal road land-seeking house according to claim 1, wherein in step S1, attribute assignment preprocessing is performed on the primitive attributes of the measured topographic map, and land-seeking removal areas are adjusted according to the road route selection scheme.

6. The statistical method of house of town road land seeking according to claim 1, wherein in step S1, the measured topographic map is measured by GPS, unmanned aerial vehicle or Beidou.

Technical Field

The invention relates to the technical field of geographic information processing, in particular to a statistical method for municipal road land acquisition houses.

Background

With the optimization and development of cities, municipal roads are continuously extended to surrounding suburbs, and the construction of the municipal roads faces the removal investment problem of houses in the expropriation areas along the lines. The statistics of the house types and the house areas along the route is an indispensable content in the investment estimation of the feasibility research stage of road engineering design. The existing statistical method marks the house types and areas within the ground wire range one by one according to the latest topographic map, and then classifies and counts.

The existing topographic map in engineering design is generally described by geometric and coordinate features and does not contain attribute features. The existing land acquisition house statistical method is to manually define and measure the area of houses one by one in CAD software, and the method has the disadvantages that when the houses along the line are distributed in a dispersed or more number, a great amount of time is consumed for designers to perform statistics, labels are easy to miss, when the route scheme is changed, the statistics is performed again, and the efficiency is very low.

Disclosure of Invention

The invention aims to provide a municipal road land acquisition house statistical method which can be used for quickly and accurately marking and can be adjusted and modified along with a route scheme.

The above object of the present invention is achieved by the following technical solutions: a statistical method for municipal road land acquisition houses comprises the following steps:

s1, selecting and determining land acquisition and removal areas according to the actually measured topographic map provided by the surveying and mapping bureau;

s2, cleaning the topographic map, removing the non-related map layers, and reserving the house map layers and the annotations thereof;

s3, carrying out format conversion on the cleaned topographic map and importing the topographic map into GIS software;

s4, detecting the house contour line in GIS software, eliminating isolated line segments, and then performing topology analysis to form a region file; according to the imported house comments, attribute assignment is carried out on the zone files, and an attribute structure for judging whether the house is imposed or not is established in the zone files;

and S5, importing the expropriation and removal area and the area files into a space analysis module, carrying out intersection analysis to form an intersection file, and overlapping the original house area files according to the attributes of the intersection file to obtain a result drawing of the house in the expropriation and removal area.

By adopting the technical scheme, the existing topographic map is endowed with attribute characteristics, and the spatial analysis is adopted to mark and count the houses in the land acquisition and removal range of the municipal road, so that the complicated work of counting one by manpower is solved, and the statistics of the land acquisition and removal houses is more rapid; through the intersection analysis of topology and space, the category and the area of the house in the expropriation and removal range can be accurately counted; through preprocessing such as attribute assignment of the topographic map primitives, the cost performance can be achieved, and the statistical range can be adjusted along with the scheme of road route selection.

The invention is further configured to: the method comprises the following steps of establishing a disassembled house evaluation model according to a house price evaluation index system, wherein the steps comprise:

selecting six important indexes which have large influence on the price of the house from the aspects of area factors, house structure factors, house age, the number of family members and the like, and establishing a house price evaluation index system;

and constructing a BP network model for evaluating the house price by using a BP neural network according to the house price evaluation index system so as to obtain the mapping relation between the house market price and the influence.

By adopting the technical scheme, the subjective randomness of the valuation process can be reduced through the house price evaluation index system, so that the valuation result has public confidence, and the efficiency of valuation operation can be improved.

The invention is further configured to: in step S5, the house area and category in the expropriation and removal area are inversely marked on the achievement drawing, and cost statistics is performed to form a removal cost report of the house on the achievement drawing.

By adopting the technical scheme, the house area and the category are inversely marked in the achievement drawing according to the requirement, so that the removal cost statistics of the house in the expropriation removal area is facilitated.

The invention is further configured to: in step 5, different removal cost reports are formed for different route selection schemes, and the route selection scheme is determined according to the removal cost reports.

By adopting the technical scheme, the basis is provided for the road route selection scheme through the removal cost report, and more economical and reasonable road routes can be conveniently selected.

The invention is further configured to: in step S1, attribute assignment preprocessing is performed on the primitive attributes of the measured topographic map, and the land acquisition and removal area is adjusted according to the road route selection scheme.

By adopting the technical scheme, the reusability can be achieved through preprocessing such as attribute assignment of the topographic map primitives, and the like, namely the statistical range can be adjusted along with the scheme of road route selection; the graphic element attributes can be defined according to requirements, so that the method has high flexibility and expandability, and is convenient for investment departments to accurately grasp and control the site of the road investment estimation.

The invention is further configured to: in step S1, the measured topographic map is measured by GPS measurement, drone measurement, or beidou measurement.

In conclusion, the beneficial technical effects of the invention are as follows: by endowing the existing topographic map with attribute characteristics and adopting spatial analysis to mark and count houses in the land acquisition and removal range of the municipal road, the complicated work of counting one by manpower is solved, so that the statistics of the land acquisition and removal houses is more rapid; through the intersection analysis of topology and space, the category and the area of the house in the expropriation and removal range can be accurately counted; through preprocessing such as attribute assignment of the topographic map primitives, the cost performance can be achieved, and the statistical range can be adjusted along with the scheme of road route selection.

Drawings

FIG. 1 is a schematic flow chart of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A statistical method for municipal road land acquisition houses is shown in figure 1 and comprises the following steps: s1, selecting and determining land acquisition and removal areas according to the actually measured topographic map provided by the surveying and mapping bureau; s2, cleaning the topographic map, removing the non-related map layers, and reserving the house map layers and the annotations thereof; s3, carrying out format conversion on the cleaned topographic map and importing the topographic map into GIS software; s4, detecting the house contour line in GIS software, eliminating isolated line segments, and then performing topology analysis to form a region file; according to the imported house comments, attribute assignment is carried out on the zone files, and an attribute structure for judging whether the house is imposed or not is established in the zone files; and S5, importing the expropriation and removal area and the area files into a space analysis module, carrying out intersection analysis to form an intersection file, and overlapping the original house area files according to the attributes of the intersection file to obtain a result drawing of the house in the expropriation and removal area.

The land expropriation and removal area can be the land expropriation and removal of the municipal road and can also be the land expropriation and removal of other urban construction. By endowing the existing topographic map with attribute characteristics and adopting spatial analysis to mark and count houses in the land acquisition and removal range of the municipal road, the complicated work of counting one by manpower is solved, so that the statistics of the land acquisition and removal houses is more rapid; through the intersection analysis of topology and space, the category and the area of the house in the expropriation and removal range can be accurately counted; through preprocessing such as attribute assignment of the topographic map primitives, the cost performance can be achieved, and the statistical range can be adjusted along with the scheme of road route selection.

For the formed intersection file, whether the route scheme of the municipal road is modified or not needs to be judged, if yes, the expropriation and removal area is modified, and then step S2 is executed; and if not, obtaining a result drawing. Topology analysis refers to the property of maintaining invariance under continuous change in space; important topological properties include connectivity and compactness. Spatial analysis is a quantitative study of geospatial phenomena, the conventional ability of which is to manipulate spatial data into different forms and extract its underlying information; the spatial analysis capability is a main aspect of distinguishing the geographic information system from a general information system, and is also a main index for evaluating the success of the geographic information system.

The method comprises the following steps of establishing a disassembled house evaluation model according to a house price evaluation index system, wherein the steps comprise: selecting six important indexes which have large influence on the price of the house from the aspects of area factors, house structure factors, house age, the number of family members and the like, and establishing a house price evaluation index system; and constructing a BP network model for evaluating the house price by using a BP neural network according to the house price evaluation index system so as to obtain the mapping relation between the house market price and the influence. The subjective randomness of the valuation process can be reduced through the house price evaluation index system, the valuation result has public confidence, and the efficiency of valuation operation can be improved. The BP neural network is a multi-layer feedforward neural network trained according to an error back propagation algorithm, the algorithm is called as BP algorithm, the basic idea is a gradient descent method, and a gradient search technology is utilized to minimize the mean square error between an actual output value and an expected output value of the network.

In step S5, inversely marking the house area and category in the expropriation and removal area on the achievement drawing, and performing cost statistics to form a removal cost report of the house on the achievement drawing; and the house area and the category are inversely marked in the achievement drawing according to the needs, so that the removal cost statistics of the houses in the expropriation removal area is facilitated. In step 5, different removal cost reports are formed for different road route selection schemes, and the road route selection scheme is determined according to the removal cost reports; the removal cost report provides basis for the road route selection scheme, so that more economical and reasonable road routes can be selected conveniently.

In step S1, performing attribute assignment preprocessing on the primitive attributes of the actually measured topographic map, and adjusting the land acquisition removal area according to the road route selection scheme; the reusability can be achieved through preprocessing such as attribute assignment of the topographic map primitives, and the statistical range can be adjusted along with the scheme of road route selection; the graphic element attributes can be defined according to requirements, so that the method has high flexibility and expandability, and is convenient for investment departments to accurately grasp and control the site of the road investment estimation. In step S1, the measured topographic map is measured by GPS measurement, drone measurement, or beidou measurement.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.