2. Adjust the map auto-Downsizing software for the land use database, and scale down the database

2. Adjust the map auto-Downsizing software for the land use database, and scale down the database

Second adjustment of land use database

Automatic downsizing software [SmileMap]Introduction

(Note: The GIS platform software has been updated from ArcGIS9.3 to ArcGIS10.0)

(1) software interface introduction:

 

Main Program for automatic downsizing control (C # development: FME-driven internal implementation, fully automatic process-based and parameterized processing)

Auxiliary program for manual downsizing (ArcGIS Engine 9.3 development: narrow area selection, annotation, drawing, report, quality check)

The processing program is programmed with FME + C # + ArcGIS 9.3, which basically realizes the automatic operation of the downsizing operation process. In the process of downsizing, a highly complex geometric computing and automated (process-based) processing steps were adopted. 90-95% of tasks are handed over to the computer (about 5% or 0.5 ~ 1 day (manual intervention ). Increase labor efficiency by more than 10 times.

L The program implements process-based processing (FME Inside) according to the pre-configured "downsizing Rules ). Downsizing and post-processing computing are completed consecutively.

L parameterization control of the downsizing process: this parameter is formulated based on the indicators specified in the national standard documents. You can also modify the configuration according to the region characteristics.

L one machine can perform automatic downsizing tasks in two districts and counties at the same time, unattended. One person can supervise multiple machines for crazy batch processing.

L accept the data format: MapGIS File, ArcGIS (Shape File/File Geodatbase Folder/Access File ).

L output data format: MapGIS File, ArcGIS (Shape/File Geodatbase/Access), and MapInfo File.

L scale down from to/5/10/25/50/100/400. You can scale down the provincial/provincial puzzles.

L a manual drawing interface is provided to complete functions such as drawing, data selection, editing, statistical report, and data browsing check.

 

When using the software, you only need:

1: The program comes with a wizard to create a new downsizing test area. The second adjustment result data is stored in MapGIS or ESRI (Shape File, File Geodatase or Access File) read and place it in the downsizing data folder in the specified format, and generate authorization feature files (XZQ. shp, all original data file features generate authorization description file); the user obtains the customer license authorization file from the software author, and charges; one payment only applies to the data of the current year of the test area, after the data is changed again, it will become invalid.

2: run the program, read the specified downsizing data folder, set a small number of parameters, and perform streamlined downsizing.In addition to the selection and cutting of narrow surfaces, manual intervention is required. All other downsizing processes are automatically implemented.All operations on the image and selection of linear features (striping) have been automatically processed, and the operation can be mastered without the need for the operator to have strong downsizing skills and knowledge.

3: Other necessary manual post-processing (note selection, statistical reports, graph printing, and visual quality check ).

(2) downsizing features:

1. parameterization of all downsizing processes: you can modify the Access database configuration file in advance to specify the downsizing effect. Using the second-level numeric value as the keyword, multiple control values are set for use in the downsizing process to achieve full parametric control.

2: downsizing ratio: From. (The original data scale is/10000)

3: the scope and area of the entire test area are subject to the XZQ. shp issued by the provincial government. It can ensure that the area in the village remains unchanged, the area in the township area remains unchanged, and the area in the county area remains unchanged. The area and border are consistent before and after the downsizing.

4: the area of each township/village remains unchanged. As shown in the figure, villages and towns are used as the area for downsizing. However, if it is to ensure the downsizing of the township area, there will be exchanges between villages within the Township area.

5: the narrow area is converted into a linear shape. You can specify which areas can be converted into linear objects. Predict the line width after conversion. (But not all long and narrow surfaces change the line: the protected water network road network can continue to maintain the surface characteristics .)

6. Adjacent Fusion: The overall order is determined by parameters such as level 2, level 1, and minimum area. In the adjacent fusion, some small image spots that are swallowed up are converted into sporadic objects according to the rules and involved in the subsequent area Deduction Calculation, which makes the second-level geographic statistics more balanced.

7. Hash Fusion: Convergence may occur if the distance between residential areas and water ponds is too close. The program has a built-in "weight" order of hash fusion among multiple categories to ensure that the pressure-covering relationship is reasonable.

8. Exaggerated features: the minimum area of important areas such as industrial and mining areas and residential areas is set separately. Exaggerated processing can be set to retain important features.

9: water network, road network protection + widening of long and narrow area, to prevent the conversion of important surface features into linear. This is useful for retaining important roads and rivers.

10: Right Angle protection and narrow and sharp corner removal are implemented in the process of reducing and simplifying the image.

11. Different simplification methods based on the surface boundary can lead:Quality Reduction/Graph downsizing/Intelligent simplicityThree types of downsizing results. Regardless of the scale-down, the geographic boundaries at the periphery are consistent with those at the administrative district scope, and are not out of bounds or white.

12: linear features are chosen based on the level, width, and length. Linear features are intelligently selected based on the following indicators: margin spacing, length limitation, network connectivity assurance (village-level access, road network, and water network smoothness), linear density limitation, and mesh size limitation, you can achieve excellent selection without human intervention. In traditional manual downsizing, manual experience must be fully relied on.

After the border of a spot image changes, the linear terrain interspersed with the border of the original SPOT Image still maintains the correctness of the topological relationship through the "Fitting" algorithm. This is a major defect and difficulty in the traditional manual downsizing.

13: it can work with ArcSDE + Oracle to output area statistics reports before and after the downsizing to compare and analyze the correctness of the downsizing.

14: it not only fully automated the downsizing process of a single test area, but also batch processing of multiple test areas, unattended.

15: a ready-made ArcGIS Symbol Library is provided to observe the similarity of the rendering pattern before and after the downsizing of the entire area, and intuitively check the correctness of the downsizing. The Automatic Generation of Area Chart is provided, and only a few modifications are required to output the area chart.

(3) Summary of the downsizing process:

1: Automatic Execution of à data pre-processing: Aggregation of villages and towns/villages to determine the scope of processing and the list of units for subsequent processing. Water Network/road network protection pre-processing (set: DLTB. TBYBH = 1 ...).

2: The Node capture operation is automatically executed (nodes of the image spots and linear features are aligned with the local class line to eliminate node drift ).

3: Automatic Execution of a long and narrow figure to a linear figure. Merge the cross-administrative area of the narrow area, split the broken Area Center, and merge the two sides.

4: The fusion operation of a hash is automatically performed (for example, similar Fusion occurs in residential areas and other features ).

5: automatically scale down a graph spot partition. Performs adjacent fusion. Generate sporadic features.

6: automatically merge, simplify, and serial number the results of a scaled down area, constrain the entire measurement area within the administrative area, and eliminate small gaps.

7: auto-execute. Important features can be protected.

8: automatic protection of water network and road network cover + narrow area widening. This feature protects important features from plotting based on surface elements.

9: Automatic Generation of A Class symbol point and a class line.

10.

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11: manually view the correctness and rationality of the results, and perform regression processing after parameter adjustment (try again ).

12: water network, road network and other construction network needs to be manually completed and corrected in the future.

13: manually process the selection of texts and the generation of annotation labels

14. Results Management: Use the management software to automatically generate and reprocess area charts, reports, and test areas (notes ).

15. Data packaging: convert to other target electronic data formats. Format: Mapinfo, MapGIS, and ArcGIS.

(4) Main Achievements of automatic downsizing:

1: Geographic chart spot DLTB_SB_Result.shp

2: Linear XZDW_SB_Result.shp

3: sporadic features LXDW_SB_Result.shp

4: geographic line DLJX_SB_Result.shp

5: Administrative Region XZQ_SB_Result.shp

6: administrative line XZQJX_SB_Result.shp

7: Basic Farmland JBNTBHTB. shp

(5) software authorization and data security design:

1: Use XZQ. shp + 6-bit district code (or 4-bit Municipal Code) to generate an authorization file to permit software execution. Remote email authorization or on-site direct authorization.

2: The software author does not contact Party A's data, and both parties only need to authorize the operation. The downsizing process is controlled by data producers themselves.

3: The processing program and rules are encrypted. The processing rules are customized by the software author.

(6) R & D background and experience

1: after three years of development, R & D personnel have been engaged in land and resources development for more than 15 years. From the beginning, they insisted on achieving the goal of "automatic" downsizing.

2: participants and contributions from departments, companies, and individuals in multiple regions. It has been used for research and development in Chongqing, Chengdu, Wuhan, Beijing, Tianjin, Jiangxi, Shenyang, and Guangzhou.

3: At present, it has passed the data downsizing test in more than 60 measurement zones. Data of Various Landform types including Jiangsu, Hainan, Sichuan, Tibet, Henan, Hebei, Hubei, northeast, and Yunnan. Processing of road network/Water Network-intensive data in Jiangsu (Guangdong and other places.

4: Secondary Development Based on FME, ArcGIS, and other world-class platform algorithms; Support for mainstream Chinese GIS data formats (such as MapGIS input and output ). The underlying algorithms are advanced, the processing process is reliable, the control methods are diverse, and the presentation layers are rich.

 

(7) Example of software downsizing algorithm Effect

Algorithm example: narrow area recognition, central axis, And eliminate the narrow elements with different shapes	Algorithm example: the center line of a narrow area and the area is crushed (Preparing for merger and elimination)
Example of an algorithm: The area size and geocode are used as the group rule to merge the broken surface, and the red crude line is the integrated boundary, the line is the border of the past (the color is not the color system specified by the second adjustment, only the schematic description)	Algorithm example: convergence of residential hash (The image shows the merge of three adjacent hash faces)
Examples of quality reduction algorithms: Straight smoothing of thin and small turns on Curve nodes (Ideal for overall planning and editing)	Examples of cross-axis pre-processing algorithms for long and narrow objects: third-level linear objects, network construction, primary-secondary cut, and attribute value assignment (For processing dense road networks/water networks, such as Jiangsu/Guangdong)
The following categories of GEO charts are default protected values: 101,102,104,105,111,117,118,201,202	Linear Features: Similar short-term connections, suspension feature calculation, horizontal row spacing, length limitation, density limitation, connectivity protection, mesh density limitation, and small mesh elimination. The process parameters are performed according to the parameters specified in the technical documentation for Land and Resources downsizing.
Right Angle Protection
	Line veneer: ensure that the topological relationship between the simplified line and the linear object remains unchanged.

(8) software development and Process Control Technology

Parameter Control
Execute batch processing tasks for downsizing of two test zones at the same time
Background Process Monitoring: prevents "false positives", automatically removes error alarm message boxes, views downsizing logs, and interrupts handling processes

(9) Efficiency and labor hours and costs

1: manual operation 1: Pre-selection (including the cutting operation) before the cross-axis operation in batch for long and narrow image spots ). According to the complexity of the test area, from a few minutes, hours, to 1-2 days, the general test area will not exceed half a day. The manual downsizing helper integrates specific tools (Face segmentation and attribute click modification ).

2: manual operation 2: Make-up of linear features. After the software intelligently extracts linear features, if you feel that the results are not rigorous enough, you can manually select some features to increase the connectivity of road networks, water networks, and villages and towns. 1-2 hours, generally less than half a day. The manual downsizing helper integrates specific tools (line division, cross-layer line replication, and line deletion ).

3: manual operation 3: Drawing operation, very fast. Because of the manual downsizing program, the area wall chart function is customized in depth. Manually add notes and print them. The printing auxiliary element can be automatically generated according to the preset parameters.

4: manual operation 4: visual inspection. Manual assistance for downsizing has integrated data loading and visual inspection tools (flickering, transparent, and shutter) for commonly used image scanning ). Manual visual inspection can appear several times in stages (after central axis, after downsizing, after simplification, and after striping of linear objects ).

5: Optional operations-topology check and graphic defect troubleshooting. 1-2 hours is enough.

6: Optional operations-reports. Currently, Oracle and ArcSDE must be installed (the report function of this program comes from the second-level data library ).

 

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(If necessary, contact us to provide paid services.The author also made up how many days and nights he worked overtime and stayed up late. It is not easy to earn money to support his family. I hope everyone can understand it .)

 

Paid Service Description: General Service

 

Name: Zero-active, scattered, or small-data-volume task
Note: Generally, online services are used for tasks with low overall value and short cycle.
Price 1: Software authorization, Raw Data Processing = 20 thousand RMB/1000 square kilometers
Price 2: Software authorization, Raw Data Processing = 10 thousand RMB/1000 square kilometers 

Directly undertake the downsizing Service

 

Name: directly undertaking the downsizing task
Note: on-site services are generally adopted for tasks with relatively high overall value and long cycle.
Price: negotiable

Professional Technical Services

 

Name: a task of R & D nature that requires programming
NOTE: Special tasks caused by the particularity of data and indicators
Price: negotiable