CN112115220A - Map data inspection method and computer-readable storage medium - Google Patents
Map data inspection method and computer-readable storage medium Download PDFInfo
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Abstract
The invention discloses a map data checking method and a computer readable storage medium, the method comprises loading map data to be checked, wherein the map data comprises a plurality of map layers, and the same map layer corresponds to the same geographic element; according to a preset configuration file, checking attribute data of each layer and each geographic element in each layer; carrying out graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection; if errors are detected, recording error information into a problem record table, wherein the problem record table comprises a layer name, an element code value and a problem description; and correcting errors detected in the graph topological relation check. The invention can improve the accuracy, comprehensiveness and convenience of data inspection, and can improve the image examining efficiency and the correcting efficiency.
Description
Technical Field
The present invention relates to the field of data inspection technologies, and in particular, to a map data inspection method and a computer-readable storage medium.
Background
At present, the checking steps of the ARCGIS software on basic geographic data are complicated, the problem of checking the attribute data can only be solved one by checking the name, the type, the length and the value range of each field of an attribute table manually, and misjudgment and time waste are easily caused when mass data are faced. The graphic data inspection relates to a series of operations such as data storage, new topology construction, coordinate definition, tolerance setting, rule addition, topology verification and the like, and is lack of an intelligent modification function.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a map data inspection method and a computer-readable storage medium are provided, which can improve the accuracy, comprehensiveness and convenience of data inspection, and can improve the map reviewing efficiency and the correcting efficiency.
In order to solve the technical problems, the invention adopts the technical scheme that: a map data inspection method, comprising:
loading map data to be checked, wherein the map data comprises a plurality of layers, and the same layer corresponds to the same geographic element;
according to a preset configuration file, performing attribute data check on each layer and each geographic element in each layer, wherein the attribute data check comprises layer name check, layer attribute structure check, element coding check and attribute value field check;
carrying out graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection;
if errors are detected, recording error information into a problem record table, wherein the problem record table comprises a layer name, an element code value and a problem description;
and correcting errors detected in the graph topological relation check.
The invention also proposes a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as described above.
The invention has the beneficial effects that: by automatically checking the attribute data of the map data, the one-click checking of the attributes of the massive vector data can be realized, and the accuracy, comprehensiveness and convenience of the data checking are greatly improved; by automatically checking the graphic topological relation of the map data, compared with the traditional visual check, the accuracy, comprehensiveness, scientificity and convenience of the data check are comprehensively improved; by recording the error information to the problem recording table, the image reviewer is helped to quickly locate the error, the semi-automation of review and modification is realized, and the image reviewing efficiency is improved; by intelligently modifying the checked partial errors, the efficiency and the accuracy of error modification are improved, and the cost of human resources is greatly reduced.
Drawings
FIG. 1 is a flow chart of a method for checking map data according to the present invention.
Detailed Description
In order to explain technical contents, objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, a method for checking map data includes:
loading map data to be checked, wherein the map data comprises a plurality of layers, and the same layer corresponds to the same geographic element;
according to a preset configuration file, performing attribute data check on each layer and each geographic element in each layer, wherein the attribute data check comprises layer name check, layer attribute structure check, element coding check and attribute value field check;
carrying out graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection;
if errors are detected, recording error information into a problem record table, wherein the problem record table comprises a layer name, an element code value and a problem description;
and correcting errors detected in the graph topological relation check.
From the above description, the beneficial effects of the present invention are: the accuracy, comprehensiveness and convenience of data inspection can be improved, and the image reviewing efficiency and the correcting efficiency can be improved.
Further, the configuration file includes a first file, a second file, and a third file, where the first file stores the layer name and the geometric type of each layer, the second file stores the attribute field and the value range of each geographic element, and the third file stores the element code value of each geographic element.
According to the description, customized inspection is realized by presetting the configuration files, and the configuration files can be flexibly set according to different projects and different data requirements.
Further, if an error is detected, recording error information to a problem record table, further comprising:
and respectively carrying out coordinate inspection on the coordinate position information of each geographic element in each layer according to a preset coordinate system.
As can be seen from the above description, the coordinate data can also be checked.
Further, the navigation road connectivity check specifically includes:
loading the map layer of the corresponding road;
calculating the vertical distance between the road end point of a road and the center line of other roads closest to the road end point;
and if the vertical distance is greater than a preset tolerance value, judging that an error is detected, and marking the road end point as a suspension point or marking the road as a one-way broken road.
Further, the correcting the error detected in the graph topology relationship check includes:
and according to the extending direction of the road, extending the road to the central line of other roads nearest to the road.
As can be seen from the above description, the connectivity of the navigation road is ensured.
Further, the vector road section inspection specifically comprises:
loading the map layer of the corresponding road;
acquiring two overlapped or intersected roads according to the coordinate position information of the roads;
judging whether the two roads meet a preset drawing rule according to the road grade information of the two roads, wherein the drawing rule is that a high-grade road is drawn on a low-grade road;
if not, the error is judged to be detected.
From the above description, it can be checked whether there is section processing at different road grades, whether to preferentially ensure the communication of high-grade roads, whether to conform to the overlook on-off principle, etc.
Further, the surface-to-surface overlapping inspection specifically comprises:
acquiring a layer with a corresponding geometric type as a surface according to a preset geographical element combination;
judging whether two overlapped or intersected geographical elements exist according to the obtained coordinate position information of each geographical element in the map layer;
and if so, judging that the two geographic elements have a gland relation, and judging that an error is detected.
Further, the correcting the error detected in the graph topology relationship check includes:
and according to the preset priority of the geographic elements, cutting the overlapping parts or the intersecting parts of the geographic elements with lower priority in the geographic elements with the gland relation.
According to the description, the capping problem among different geographic elements can be effectively solved, the data can be rapidly processed, and the manpower input is reduced.
Further, the correcting the error detected in the graph topology relationship check further includes:
loading a layer with a geometric type of a surface, and calculating the area of each geographic element in the layer;
and if the area of one geographic element is smaller than the preset area value, fusing the geographic element into the geographic element closest to the geographic element.
As can be seen from the above description, the problem of fragmenting the planar elements can be solved.
The invention also proposes a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as described above.
Example one
Referring to fig. 1, a first embodiment of the present invention is: a map data inspection method can be applied to electric power basic map construction service projects, and is used for inspecting attribute data of basic geographic data, inspecting topology of graphic data and intelligently correcting partial problems.
The present embodiment mainly includes attribute data inspection and graphic data inspection.
For attribute data checking, the method comprises the following steps:
s101: loading map data to be checked, wherein the map data comprises a plurality of layers, and the same layer corresponds to the same geographic element; the geographic elements include natural geographic elements such as water systems and vegetation, and socioeconomic elements such as residential areas and roads, wherein each geographic element includes a plurality of categories such as expressways, national roads, provincial roads, county roads, main roads, secondary roads, general roads, and the like. In this embodiment, one layer only contains one geographic element.
S102: and according to a preset configuration file, checking attribute data of each layer and each geographic element in each layer.
Mdb includes a first file layer, a second file field and a third file coverson, the three files may be in a table format, the first file stores layer names and geometric types (points, lines and surfaces) of all layers, the second file stores attribute fields and value domain ranges of all geographic elements, and the third file stores element coding values of all geographic elements.
The attribute data check comprises layer name check, layer attribute structure check, element code check and attribute value field check, namely, whether the layer name is wrong or not, whether the attribute field length, the type and the element code are matched with the configuration file or not, whether the attribute value exceeds the corresponding value field range or not and the like.
The content of the configuration file is set according to the technical specification, when the data meets the requirement of the configuration table, the checking result shows no error, if the data does not meet the requirement of the configuration table, the error is considered to be checked, and step S104 is executed.
S103: and respectively carrying out coordinate inspection on the coordinate position information of each geographic element in each layer according to a preset coordinate system. For example, it is checked whether it is 2000 coordinates (the corresponding coordinate system is the 2000 country geodetic coordinate system).
S104: and recording the error information into a problem record table, wherein the problem record table comprises but is not limited to sequence numbers, layer names, element coding values and problem descriptions. And the problem record table can know which geographic element of which layer has any error, so that subsequent correction is facilitated.
And for graphic data inspection, namely, performing graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection. Further, a general topology check, which is the sum of the three kinds of pattern checks, may also be included.
The navigation road connectivity check is a check on navigation linear road data, specifically, a map layer corresponding to a road is loaded first, then each road in the map layer is traversed, and a vertical distance between a road end point of each road and a road center line of another road closest to the road end point is calculated, if the vertical distance between the road end point of one road and the center line of another road closest to the road end point is greater than a preset tolerance value, the road end point is considered as a suspension point or the road is a unidirectional head-off road, and the suspension point is recorded in a problem record table as error information, for example, which road end point of which road in the map layer is the suspension point can be recorded in the problem record table. And if the vertical distances between the road end point of each road and the road center line of the other road closest to the road end point are less than or equal to the tolerance value, determining that no error exists.
For vector road section inspection, the method mainly aims at large-scale vector road data (namely vector surface-shaped road data), and inspects whether section processing exists at different road grades, whether high-grade road communication is guaranteed preferentially, whether a overlook on-off principle is met and the like. Specifically, map layers of corresponding roads are loaded firstly, and then whether two overlapped or intersected roads exist is judged according to coordinate position information of each road; if yes, acquiring the two roads, and then judging whether the two roads meet a preset drawing rule according to road grade information of the two roads, wherein the drawing rule is that a high-grade road is drawn on a low-grade road; if not, recording the error information to the problem record table.
For example, if it is detected that two overlapped or intersected roads are respectively an expressway and a national road, and the road grade of the expressway is higher than the road grade of the national road, it is determined whether the stacking sequence of the expressway is above the national road, if so, it is determined that no error exists, and if not, the two roads in the map layer are recorded in the problem recording table and do not pass the vector road section inspection.
For the surface-to-surface overlapping inspection, specifically, according to a preset geographical element combination, acquiring a corresponding image layer; in this embodiment, the preset geographic element combination includes a residential area and a residential area, a residential area and a road (where the road is a vector planar road), a residential area and a water system, and a residential area and a vegetation cover, and the corresponding map layers obtained at this time are all map layers with a geometric type of a surface, that is, the geographic elements in these map layers are all planar elements. Then judging whether two overlapped or intersected geographical elements exist according to the obtained coordinate position information of each geographical element in the map layer; if the map information exists, the two geographic elements are considered to have the gland relationship, and the map information is recorded in the problem record table as error information.
Further, after the graph topological relation is checked, the checked error is corrected.
Specifically, for the error detected in the navigation road connectivity check, the road is extended to the center line of the other road closest to the road according to the extending direction of the road marked as the one-way broken road, so that the automatic extending and closing function is realized. For example, assuming that a road in the vertical direction at a certain T-shaped intersection is a one-way broken road, the road in the vertical direction is extended to a road in the horizontal direction, so as to form a complete T-shaped intersection.
And for the errors detected in the face-to-face overlapping check, according to the preset priority of the geographic elements, clipping the overlapping parts or the intersecting parts of the geographic elements with lower priority in the geographic elements with the gland relationship. In this embodiment, the priority order of the geographic elements is: residential area > road > water system > vegetation. For example, if a certain residential area and a certain vegetation have a capping relationship, a portion of the vegetation overlapping or intersecting with the residential area is cut so that there is no overlap or intersection between the two. If the two residential areas have a gland relationship, the residential area with a smaller area is cut.
Further, the method also comprises the correction of the small broken face elements. Specifically, traversing the layer with the geometric type as a surface, and calculating the area of each geographic element in the current layer; and if the area of one geographic element is smaller than the preset area value, fusing the geographic element into the geographic element closest to the geographic element.
According to the method, one-click inspection can be quickly and accurately carried out on basic geographic data attribute data, corresponding topology rules are set according to the technical specification requirements of vector data, topological errors of the graphic data are checked in one-click mode, topological error data are quickly positioned by exporting the problem layers, the intelligent modification function of partial problems is realized, and technicians are assisted in problem data modification. And customized inspection is supported, inspectors can update the background configuration table independently according to different projects and different data requirements, and data in the configuration table can be flexibly set to meet different project requirements.
The embodiment can realize one-click type checking of the mass vector data attributes, and greatly improves the accuracy, comprehensiveness and convenience of data checking. The graphic data inspection comprehensively improves the accuracy, comprehensiveness, scientificity and convenience of data inspection, improves the data quality to a certain extent and reduces the investment of labor cost compared with the traditional visual inspection. By recording the error information to the problem recording table, the image examination personnel can be helped to quickly locate the error, the semi-automation of examination and modification is realized, and the image examination efficiency is greatly improved. Through the intelligent modification of the detected errors, the modification efficiency can be improved, the investment cost can be reduced, and the economic benefit can be brought to a great extent.
Example two
This embodiment is a computer-readable storage medium corresponding to the first embodiment, on which a computer program is stored, which when executed by a processor implements the steps of:
loading map data to be checked, wherein the map data comprises a plurality of layers, and the same layer corresponds to the same geographic element;
according to a preset configuration file, performing attribute data check on each layer and each geographic element in each layer, wherein the attribute data check comprises layer name check, layer attribute structure check, element coding check and attribute value field check;
carrying out graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection;
if errors are detected, recording error information into a problem record table, wherein the problem record table comprises a layer name, an element code value and a problem description;
and correcting errors detected in the graph topological relation check.
Further, the configuration file includes a first file, a second file, and a third file, where the first file stores the layer name and the geometric type of each layer, the second file stores the attribute field and the value range of each geographic element, and the third file stores the element code value of each geographic element.
Further, if an error is detected, recording error information to a problem record table, further comprising:
and respectively carrying out coordinate inspection on the coordinate position information of each geographic element in each layer according to a preset coordinate system.
Further, the navigation road connectivity check specifically includes:
loading the map layer of the corresponding road;
calculating the vertical distance between the road end point of a road and the center line of other roads closest to the road end point;
and if the vertical distance is greater than a preset tolerance value, judging that an error is detected, and marking the road end point as a suspension point or marking the road as a one-way broken road.
Further, the correcting the error detected in the graph topology relationship check includes:
and according to the extending direction of the road, extending the road to the central line of other roads nearest to the road.
Further, the vector road section inspection specifically comprises:
loading the map layer of the corresponding road;
acquiring two overlapped or intersected roads according to the coordinate position information of the roads;
judging whether the two roads meet a preset drawing rule according to the road grade information of the two roads, wherein the drawing rule is that a high-grade road is drawn on a low-grade road;
if not, the error is judged to be detected.
Further, the surface-to-surface overlapping inspection specifically comprises:
acquiring a layer with a corresponding geometric type as a surface according to a preset geographical element combination;
judging whether two overlapped or intersected geographical elements exist according to the obtained coordinate position information of each geographical element in the map layer;
and if so, judging that the two geographic elements have a gland relation, and judging that an error is detected.
Further, the correcting the error detected in the graph topology relationship check includes:
and according to the preset priority of the geographic elements, cutting the overlapping parts or the intersecting parts of the geographic elements with lower priority in the geographic elements with the gland relation.
Further, the correcting the error detected in the graph topology relationship check further includes:
loading a layer with a geometric type of a surface, and calculating the area of each geographic element in the layer;
and if the area of one geographic element is smaller than the preset area value, fusing the geographic element into the geographic element closest to the geographic element.
In summary, according to the map data inspection method and the computer-readable storage medium provided by the invention, the map data is automatically subjected to attribute data inspection, so that mass vector data attribute one-click inspection can be realized, and the accuracy, comprehensiveness and convenience of data inspection are greatly improved; by automatically checking the graphic topological relation of the map data, compared with the traditional visual check, the accuracy, comprehensiveness, scientificity and convenience of the data check are comprehensively improved; by recording the error information to the problem recording table, the image reviewer is helped to quickly locate the error, the semi-automation of review and modification is realized, and the image reviewing efficiency is improved; by intelligently modifying the checked partial errors, the efficiency and the accuracy of error modification are improved, and the cost of human resources is greatly reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A map data inspection method, comprising:
loading map data to be checked, wherein the map data comprises a plurality of layers, and the same layer corresponds to the same geographic element;
according to a preset configuration file, performing attribute data check on each layer and each geographic element in each layer, wherein the attribute data check comprises layer name check, layer attribute structure check, element coding check and attribute value field check;
carrying out graphic topological relation inspection on the map data, wherein the graphic topological relation inspection comprises navigation road connectivity inspection, vector road section inspection and surface overlapping inspection;
if errors are detected, recording error information into a problem record table, wherein the problem record table comprises a layer name, an element code value and a problem description;
and correcting errors detected in the graph topological relation check.
2. The map data inspection method according to claim 1, wherein the configuration file includes a first file, a second file, and a third file, the first file stores the layer name and the geometric type of each layer, the second file stores the attribute field and the value range thereof of each geographic element, and the third file stores the element code value of each geographic element.
3. The map data checking method according to claim 1, wherein if an error is checked, before recording error information in the problem recording table, the method further comprises:
and respectively carrying out coordinate inspection on the coordinate position information of each geographic element in each layer according to a preset coordinate system.
4. The map data inspection method according to claim 1, wherein the navigation road connectivity inspection is specifically:
loading the map layer of the corresponding road;
calculating the vertical distance between the road end point of a road and the center line of other roads closest to the road end point;
and if the vertical distance is greater than a preset tolerance value, judging that an error is detected, and marking the road end point as a suspension point or marking the road as a one-way broken road.
5. The map data inspection method according to claim 4, wherein the correcting the error detected in the graphic topological relation inspection comprises:
and according to the extending direction of the road, extending the road to the central line of other roads nearest to the road.
6. The map data inspection method according to claim 1, wherein the vector road section inspection is specifically:
loading the map layer of the corresponding road;
acquiring two overlapped or intersected roads according to the coordinate position information of the roads;
judging whether the two roads meet a preset drawing rule according to the road grade information of the two roads, wherein the drawing rule is that a high-grade road is drawn on a low-grade road;
if not, the error is judged to be detected.
7. The map data inspection method according to claim 1, wherein the face-to-face overlay inspection is specifically:
acquiring a layer with a corresponding geometric type as a surface according to a preset geographical element combination;
judging whether two overlapped or intersected geographical elements exist according to the obtained coordinate position information of each geographical element in the map layer;
and if so, judging that the two geographic elements have a gland relation, and judging that an error is detected.
8. The map data inspection method according to claim 7, wherein the correcting the error detected in the graphic topological relation inspection includes:
and according to the preset priority of the geographic elements, cutting the overlapping parts or the intersecting parts of the geographic elements with lower priority in the geographic elements with the gland relation.
9. The map data inspection method according to claim 5 or 8, wherein the correcting the error detected in the graphic topological relation inspection further comprises:
loading a layer with a geometric type of a surface, and calculating the area of each geographic element in the layer;
and if the area of one geographic element is smaller than the preset area value, fusing the geographic element into the geographic element closest to the geographic element.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1-9.
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