CN113127485B - Method for processing linear ground object in power transmission line engineering measurement software - Google Patents
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Abstract
The invention discloses a processing method of linear ground objects in power transmission line engineering measurement software, which comprises the following steps: during the engineering measurement, linear ground objects of roads, rivers, enclosing walls, scarps, slopes and wire nets are abstracted into a uniform linear ground object model, and during the storage, the linear ground object attributes are stored in a form of one record. The processing method of the linear ground feature of the invention innovatively and intelligently splices the newly added linear ground feature, comprehensively considers all conditions of the attribute, the connection mode and the like of the original linear ground feature, realizes the functions of complete linear ground feature connection, editing, cutting, deleting and the like, updates the view in real time and ensures the consistency of drawing and attribute.
Description
Technical Field
The invention belongs to the technical field of data visualization processing. In particular to a method for processing linear ground objects in power transmission line engineering measurement software.
Background
In the power transmission line measurement software, a large number of linear ground object symbols are needed for marking common linear ground objects such as roads, rivers, enclosing walls, scarps, slopes and wire nets. Such linear ground objects have large differences in identification and different attributes, but need to be described in a unified abstract manner, and need to be captured and edited in addition to drawing and attribute identification.
In the prior art, linear ground objects are drawn in a tension spline curve form, but the prior art has certain defects, such as incomplete, accurate and convenient identification of the linear ground objects, and especially after the existing linear ground objects are subjected to operations such as extension and editing, the integrity and real-time updating cannot be guaranteed. The linear ground objects which are subsequently and additionally connected cannot be identified in 3 software such as 'southern CASS', 'Lily power transmission line design software' and 'Qinghuashan Wei EPS software', and can only be drawn in a curve form again; however, since the connection order and relation of the original curves are not stored, only all the curved linear ground objects can be redrawn according to all the connection points, and the connection mode of the original linear ground objects cannot be maintained, which often results in changing the connection mode of the original linear ground objects and changing the drawing of the original linear ground objects.
In the prior art, the 'Douchheng SLACAD power transmission line system' has the defects that the connection mode and the connection sequence of the existing linear ground object are not stored, only all points connected in the linear ground object are searched, and then the curve drawing of the tension spline function is carried out according to the points in the linear ground object. This processing method often results in changing the connection method of the original linear feature after the linear feature is subsequently connected or cut and edited. Another obvious disadvantage is that the attributes of the drawn linear feature are not related, and the relationship between the linear feature and the attribute of the character identifier cannot be related only by manually judging on the drawing surface as the attribute of the linear feature
Software such as southern CASS, lily power transmission line design software, qinghuashan Wei EPS software and the like can only identify linear ground objects in a single operation. That is, when the existing linear feature is connected in the following, the original linear feature and the linear feature with the same attribute and category cannot be classified into the same object, which causes the object to be incomplete and the attribute to be non-uniform. For example, after a section of a road is drawn, when the added line segment of the road is extended again, the 3 types of software cannot connect the newly added road with the original road to form a road, which results in unsmooth connection of linear ground objects on a view, and more importantly, a complete road is determined as a plurality of shorter roads when attribute analysis and statistics are performed, so that incorrect, inaccurate and repeated attribute analysis and statistical results are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a processing method of linear ground objects in power transmission line engineering measurement software.
The purpose of the invention is realized by the following technical scheme:
a processing method of a linear ground object in power transmission line engineering measurement software comprises the following steps: in the engineering measurement process, linear ground objects of roads, rivers, enclosing walls, steep ridges, slopes and wire nets are abstracted into a uniform linear ground object model, and in the storage process, the linear ground object attributes are classified into a record form for data storage.
According to a preferred embodiment, the method for processing the linear feature comprises the following steps: and during drawing and capturing, the linear ground object adopts the mode of carrying out recursive search on each connecting line segment to determine the connection relation, and is connected according to the connection mode established after searching to carry out drawing and capturing.
According to a preferred embodiment, the method for processing the linear ground object comprises the following steps: when the existing linear ground object is connected by adding the line, all possible connection modes are enumerated based on the relation between the new added linear ground object and the existing linear ground object, and the new added line is added into the existing linear ground object according to the connection modes.
According to a preferred embodiment, the method for processing the linear ground object comprises the following steps: after the existing linear ground object is changed, the character mark of the mark attribute is adaptively changed based on the drawing position of the changed linear ground object.
According to a preferred embodiment, the method for changing the marking property of the linear ground object comprises the following steps: firstly, curving each changed linear ground object; and then calculating the curve length of each linear ground feature, and determining the attribute of the selected linear ground feature according to the changed length of the linear ground feature.
According to a preferred embodiment, the determining the attribute of the selected linear feature according to the changed length of the linear feature specifically includes: the attribute of the linear ground object with longer length is adopted when connecting the new linear ground object; when a new line segment is added into the existing linear ground object, if attribute assignment is not carried out on a longer line segment, the attribute of the linear ground object with the attribute is adopted; the edited linear ground object follows the original attribute; if the linear ground object is changed into two linear ground objects after one section of the linear ground object is deleted, the linear ground objects respectively inherit the attribute of the original linear ground object.
According to a preferred embodiment, in the method for processing the linear feature, the drawing mode of the linear feature includes: firstly, calculating curve points of a tension spline function according to stored line segments of the linear ground features, then calculating the length of a curve of the tension spline function, and determining the length of a fixed interval of the linear ground features according to linear ground feature codes; and then determining the number of the fixed intervals to be drawn and the drawing positions of the fixed intervals according to the curve points of the tension spline function and the length of the fixed intervals.
According to a preferred embodiment, when the length of the tension spline curve point is less than a fixed interval length, the drawing scale of the fixed interval is adjusted according to the length.
The main scheme and each further selected scheme of the invention can be freely combined to form a plurality of schemes which are adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: the processing method of the linear ground object of the invention innovatively and intelligently splices the newly added linear ground object, comprehensively considers all conditions such as the attributes and the connection mode of the original linear ground object, realizes the functions of complete linear ground object connection, editing, cutting, deleting and the like, updates the view in real time and ensures the consistency of drawing and attributes.
In addition to the processing methods such as linear feature connection, the present proposal also performs the processing of the details of the linear feature. The method comprises the steps of firstly curvilizing a tension spline function on a linear ground object, then calculating the drawing intervals of the ground object symbols one by one according to the length of a curve, drawing the ground object symbols within a fixed interval length, and carrying out optimization processing on the drawing intervals at a curve turning point, a curve end point and the like, so that drawing display, capture and the like are more accurate.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention discloses a method for processing linear ground objects in power transmission line engineering measurement software.
Preferably, the processing method of the linear ground object includes classification, organization mode and storage method for the linear ground object. The method specifically comprises the following steps: during the engineering measurement, the linear ground objects of roads, rivers, enclosing walls, scarps, slopes and wire nets are abstracted into a uniform linear ground object model. The abstract uniform linear ground object model is convenient to adopt a uniform organization mode and store.
And the linear ground object attribute is classified into a record form for data storage in the storage process. All linear ground object attributes are classified into one record, so that the integrity of the attributes is ensured, and the attribute searching, modifying and updating are facilitated.
Preferably, the method for processing the linear ground object comprises the following steps: and during drawing and capturing, the linear ground object adopts the mode of carrying out recursive search on each connecting line segment to determine the connection relation, and is connected according to the connection mode established after searching to carry out drawing and capturing. Thereby facilitating the improvement of drawing efficiency when the data volume is huge.
Preferably, the method for processing the linear ground object comprises the following steps: when the existing linear ground object is connected with the new additional line, all possible connection modes are enumerated based on the relation between the new additional line ground object and the existing linear ground object, and the new additional line is added into the existing linear ground object according to the connection modes. Thereby ensuring the correctness of the connection relation of the line segments.
Preferably, in the processing method of the linear ground object: after the existing linear ground object is changed, the character mark of the mark attribute is adaptively changed based on the drawing position of the changed linear ground object.
Specifically, the method for changing the labeling attribute of the linear ground object comprises the following steps: firstly, each changed linear ground object is curved; and then calculating the curve length of each linear ground feature, and determining the attribute of the selected linear ground feature according to the changed length of the linear ground feature.
Further, determining the attribute of the selected linear feature according to the changed length of the linear feature specifically includes: the attribute of the linear ground object with longer length is adopted when connecting the new linear ground object; when a new line segment is added into the existing linear ground object, if attribute assignment is not carried out on a longer segment, the attribute of the linear ground object with the attribute is adopted; the edited linear ground object follows the original attribute; if the linear ground object is changed into two linear ground objects after one section of the linear ground object is deleted, the linear ground objects respectively inherit the attribute of the original linear ground object.
Preferably, in the method for processing the linear feature, the drawing method of the linear feature includes: firstly, calculating the curve point of a tension spline function according to the stored line segment of the linear ground object, then calculating the length of the curve of the tension spline function, and determining the length of the fixed interval of the linear ground object according to the linear ground object code; and then determining the number of the fixed intervals to be drawn and the drawing positions of the fixed intervals according to the curve points of the tension spline function and the lengths of the fixed intervals.
Further, when the length of the tension spline function curve point and the fixed interval length is less than a fixed interval length, the drawing proportion of the fixed interval is adjusted according to the length.
The processing method of the linear ground feature of the invention innovatively and intelligently splices the newly added linear ground feature, comprehensively considers all conditions of the attribute, the connection mode and the like of the original linear ground feature, realizes the functions of complete linear ground feature connection, editing, cutting, deleting and the like, updates the view in real time and ensures the consistency of drawing and attribute.
In addition to the processing methods such as linear feature connection, the present proposal also performs the processing of the details of the linear feature. The method comprises the steps of firstly curvilizing a tension spline function on a linear ground object, then calculating the drawing intervals of the ground object symbols one by one according to the length of a curve, drawing the ground object symbols within a fixed interval length, and carrying out optimization processing on the drawing intervals at a curve turning point, a curve end point and the like, so that drawing display, capture and the like are more accurate.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A processing method of linear ground objects in transmission line engineering measurement software is characterized by comprising the following steps: in the engineering measurement process, linear ground objects of roads, rivers, enclosing walls, scarps, slopes and wire nets are abstracted into a uniform linear ground object model, and in the storage process, the linear ground object attributes are stored in a form of one record;
the method for changing the labeling attribute of the linear ground object comprises the following steps:
firstly, curving each changed linear ground object;
then calculating the curve length of each linear ground object, and determining the attribute of the selected linear ground object according to the length of the changed linear ground object;
the determining the attribute of the selected linear feature according to the changed length of the linear feature specifically includes:
the attribute of the linear ground object with longer length is adopted when connecting the new linear ground object;
when a new line segment is added into the existing linear ground object, if attribute assignment is not carried out on a longer segment, the attribute of the linear ground object with the attribute is adopted;
the edited linear ground object follows the original attribute;
if the linear ground object is changed into two linear ground objects after one section of the linear ground object is deleted, the linear ground objects respectively inherit the attribute of the original linear ground object.
2. The processing method of the linear ground object in the transmission line engineering measurement software according to claim 1, characterized in that: and during drawing and capturing, the linear ground object adopts the mode of carrying out recursive search on each connecting line segment to determine the connection relation, and is connected according to the connection mode established after searching to carry out drawing and capturing.
3. The processing method of the linear ground object in the transmission line engineering measurement software according to claim 1, characterized in that: when the existing linear ground object is connected with the new additional line, all possible connection modes are enumerated based on the relation between the new additional line ground object and the existing linear ground object, and the new additional line is added into the existing linear ground object according to the connection modes.
4. The processing method of the linear ground object in the transmission line engineering measurement software according to claim 1, characterized in that:
after the existing linear ground object is changed, the character mark of the mark attribute is adaptively changed based on the drawing position of the changed linear ground object.
5. The method for processing the linear ground object in the power transmission line engineering measurement software according to claim 1, wherein in the method for processing the linear ground object, the drawing mode of the linear ground object comprises:
firstly, calculating curve points of a tension spline function according to stored line segments of the linear ground object, then calculating the length of a curve of the tension spline function, and determining the length of a fixed interval of the linear ground object according to linear ground object codes;
and then determining the number of the fixed intervals to be drawn and the drawing positions of the fixed intervals according to the curve points of the tension spline function and the length of the fixed intervals.
6. The method for processing the linear ground object in the transmission line engineering measurement software according to claim 5, wherein when the length of the tension spline function curve point and the fixed interval is less than a fixed interval length, the drawing proportion of the fixed interval is adjusted according to the length.
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| CN113592977B (en) * | 2021-07-26 | 2023-08-22 | 湖南省国土资源规划院 | Linear ground object processing method, system, memory and device in urban area demarcation |
| CN113688198B (en) * | 2021-08-27 | 2024-03-05 | 湖南省国土资源规划院 | Urban area range demarcation linear ground object cutting-off processing method, storage and device |
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