CN109509238A - The edit methods and system of electronic map - Google Patents
The edit methods and system of electronic map Download PDFInfo
- Publication number
- CN109509238A CN109509238A CN201810829038.8A CN201810829038A CN109509238A CN 109509238 A CN109509238 A CN 109509238A CN 201810829038 A CN201810829038 A CN 201810829038A CN 109509238 A CN109509238 A CN 109509238A
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- straight line
- point
- electronic map
- distance
- line
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012216 screening Methods 0.000 claims description 6
- 238000002372 labelling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Processing Or Creating Images (AREA)
Abstract
The present invention provides a kind of edit methods of electronic map and systems, comprising: obtains the coordinate of beginning and end, the equation of straight line where zequin and terminal；Distance of the calculating all the points to the straight line；Filter out the point at a distance from the straight line in setting value；It is ranked up according to the point that coordinate pair filters out；According to ranking results, the point after sequence is established into line segment between any two.Through the invention, map edit personnel need to only mark beginning and end, so that it may automatically by all the points automatic connection cord section in rectilinear periphery setting range, greatly improve the efficiency of map edit.
Description
Technical field
The present invention relates to technical field of data processing, and in particular, to the edit methods and system of electronic map.
Background technique
With the development of smart phone, electronic map technique has also gradually obtained the attention in market.Electronic map can be into
The drawing output of row arbitrary scale, any range.It is very easy to modify, shortens mapping time.Can easily with
The other informations such as satellite image, aerial photograph source combines, and generates new figure kind.It can use the information of numerical map record, group
Raw new data, as contour indicates landform shape on map, but layman is difficult to understand, and utilizes the contour of electronic map
Digital elevation model can be generated in line and elevational point, and surface relief is showed in digital form, can intuitive three-dimensional earth's surface
Existing landform shape.This is that common topographic map can not reach expression effect.
Need to establish line segment between points in electronic map software, indicate between two points can with intercommunication, and this
One work is currently to complete by manually.There are many quantity at electronic map midpoint, if each lead between points
It crosses and manually establishes the mode of line segment and establish connection, then it is very heavy to the work load of to map editorial staff, also very expend the time
Cost.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of edit methods of electronic map and systems.
A kind of edit methods of the electronic map provided according to the present invention, comprising:
Equation calculation step: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal；
Distance calculates step: the distance of calculating all the points to the straight line；
Screening step: the point at a distance from the straight line in setting value is filtered out；
Sequence step: it is ranked up according to the point that coordinate pair filters out；
Connection Step: according to ranking results, the point after sequence is established into line segment between any two.
Preferably, the equation of straight line is Ax+By+C=0 in the annotation step, obtained according to the coordinate of beginning and end
The value of parameter A, B, C, x, y are respectively abscissa, ordinate on straight line.
Preferably, the distance calculates in step, point arrives the distance of straight line are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
Preferably, the sequence step includes:
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is water
Flat line or oblique line sort from small to large by abscissa.
Preferably, the Connection Step includes: that the point that will be filtered out is added in lists of links, lists of links is traversed, it will
Current point and next point establish line segment.
A kind of editing system of the electronic map provided according to the present invention, comprising:
Equation calculation module: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal；
Distance calculation module: the distance of calculating all the points to the straight line；
Screening module: the point at a distance from the straight line in setting value is filtered out；
Sorting module: it is ranked up according to the point that coordinate pair filters out；
Link block: according to ranking results, the point after sequence is established into line segment between any two.
Preferably, the equation of straight line is Ax+By+C=0 in the labeling module, obtained according to the coordinate of beginning and end
The value of parameter A, B, C.
Preferably, point arrives the distance of straight line in the distance calculation module are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
Preferably, the sorting module includes:
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is water
Flat line or oblique line sort from small to large by abscissa.
Preferably, the link block includes: that the point that will be filtered out is added in lists of links, lists of links is traversed, it will
Current point and next point establish line segment.
Compared with prior art, the present invention have it is following the utility model has the advantages that
Through the invention, map edit personnel need to only mark beginning and end, so that it may rectilinear periphery be set model automatically
Interior all the points automatic connection cord section is enclosed, the efficiency of map edit is greatly improved.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is flow chart of the invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figure 1, a kind of edit methods of electronic map provided by the invention, including
Equation calculation step: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal.
The equation of straight line is Ax+By+C=0, according to starting point that is user's input or remembering in electronics point diagram subscript and
The coordinate of terminal obtains the value of parameter A, B, C, and x, y are respectively abscissa, ordinate on straight line.
Distance calculates step: the distance of calculating all the points to the straight line.
Point arrives the distance of straight line are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
Screening step: the point at a distance from the straight line in setting value is filtered out.
Sequence step: it is ranked up according to the point that coordinate pair filters out.
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is water
Flat line or oblique line sort from small to large by abscissa.
Connection Step: according to ranking results, the point after sequence is established into line segment between any two.The point that will specifically filter out
It is added in lists of links, traverses lists of links, current point and next point is established into line segment.
On the basis of a kind of edit methods of above-mentioned electronic map, the present invention also provides a kind of editor of electronic map systems
System, comprising:
Equation calculation module: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal.
The equation of straight line is Ax+By+C=0, according to starting point that is user's input or remembering in electronics point diagram subscript and
The coordinate of terminal obtains the value of parameter A, B, C.
Distance calculation module: the distance of calculating all the points to the straight line.
Point arrives the distance of straight line are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
Screening module: the point at a distance from the straight line in setting value is filtered out.
Sorting module: it is ranked up according to the point that coordinate pair filters out.
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is water
Flat line or oblique line sort from small to large by abscissa.
Link block: according to ranking results, the point after sequence is established into line segment between any two.The point that will specifically filter out
It is added in lists of links, traverses lists of links, current point and next point is established into line segment
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
It, completely can be by the way that method and step be carried out programming in logic come so that the present invention provides and its other than each device, module, unit
System and its each device, module, unit with logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and embedding
Enter the form of the controller that declines etc. to realize identical function.So system provided by the invention and its every device, module, list
Member is considered a kind of hardware component, and to include in it can also for realizing the device of various functions, module, unit
To be considered as the structure in hardware component；It can also will be considered as realizing the device of various functions, module, unit either real
The software module of existing method can be the structure in hardware component again.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of edit methods of electronic map characterized by comprising
Equation calculation step: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal；
Distance calculates step: the distance of calculating all the points to the straight line；
Screening step: the point at a distance from the straight line in setting value is filtered out；
Sequence step: it is ranked up according to the point that coordinate pair filters out；
Connection Step: according to ranking results, the point after sequence is established into line segment between any two.
2. the edit methods of electronic map according to claim 1, which is characterized in that in the annotation step, straight line
Equation is Ax+By+C=0, obtains the value of parameter A, B, C according to the coordinate of beginning and end, x, y are respectively the horizontal seat on straight line
Mark, ordinate.
3. the edit methods of electronic map according to claim 2, which is characterized in that the distance calculates in step, point
To the distance of straight line are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
4. the edit methods of electronic map according to claim 1, which is characterized in that the sequence step includes:
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is horizontal straight
Line or oblique line sort from small to large by abscissa.
5. the edit methods of electronic map according to claim 1, which is characterized in that the Connection Step includes: that will sieve
The point selected is added in lists of links, traverses lists of links, and current point and next point are established line segment.
6. a kind of editing system of electronic map characterized by comprising
Equation calculation module: obtaining the coordinate of beginning and end, the equation of straight line where zequin and terminal；
Distance calculation module: the distance of calculating all the points to the straight line；
Screening module: the point at a distance from the straight line in setting value is filtered out；
Sorting module: it is ranked up according to the point that coordinate pair filters out；
Link block: according to ranking results, the point after sequence is established into line segment between any two.
7. the editing system of electronic map according to claim 6, which is characterized in that in the labeling module, straight line
Equation is Ax+By+C=0, obtains the value of parameter A, B, C according to the coordinate of beginning and end.
8. the editing system of electronic map according to claim 7, which is characterized in that in the distance calculation module, point
To the distance of straight line are as follows:
Wherein, x0And y0The abscissa and ordinate respectively put.
9. the editing system of electronic map according to claim 6, which is characterized in that the sorting module includes:
Judge the straight line, if it is vertical line, then the ordinate of pressing filtered out sorts from small to large；If it is horizontal straight
Line or oblique line sort from small to large by abscissa.
10. the editing system of electronic map according to claim 6, which is characterized in that the link block includes: that will sieve
The point selected is added in lists of links, traverses lists of links, and current point and next point are established line segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810829038.8A CN109509238A (en) | 2018-07-25 | 2018-07-25 | The edit methods and system of electronic map |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810829038.8A CN109509238A (en) | 2018-07-25 | 2018-07-25 | The edit methods and system of electronic map |
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| Publication Number | Publication Date |
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| CN109509238A true CN109509238A (en) | 2019-03-22 |
Family
ID=65745583
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| CN201810829038.8A Pending CN109509238A (en) | 2018-07-25 | 2018-07-25 | The edit methods and system of electronic map |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603791A (en) * | 1983-06-21 | 1985-01-10 | Sairatsuku:Kk | Picking system |
| JPS6334668A (en) * | 1986-07-30 | 1988-02-15 | Hitachi Ltd | Automatic layout design supporting device |
| JPH05205041A (en) * | 1992-01-30 | 1993-08-13 | Hitachi Ltd | Method and device for curve approximation |
| EP1727064A1 (en) * | 2005-05-25 | 2006-11-29 | Shinko Electric Industries Co., Ltd. | Automatic trace determination apparatus and method |
| CN101308205A (en) * | 2008-07-04 | 2008-11-19 | 北京交通大学 | Method for automatically acquiring critical data from rail satellite positioning data |
| CN102737393A (en) * | 2012-06-13 | 2012-10-17 | 朱桂永 | Method and system for drawing vector diagram of overhead line |
| CN107168697A (en) * | 2017-04-22 | 2017-09-15 | 华南理工大学 | The line automatic obstacle-avoiding optimization method of graphical programming software |
-
2018
- 2018-07-25 CN CN201810829038.8A patent/CN109509238A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603791A (en) * | 1983-06-21 | 1985-01-10 | Sairatsuku:Kk | Picking system |
| JPS6334668A (en) * | 1986-07-30 | 1988-02-15 | Hitachi Ltd | Automatic layout design supporting device |
| JPH05205041A (en) * | 1992-01-30 | 1993-08-13 | Hitachi Ltd | Method and device for curve approximation |
| EP1727064A1 (en) * | 2005-05-25 | 2006-11-29 | Shinko Electric Industries Co., Ltd. | Automatic trace determination apparatus and method |
| CN101308205A (en) * | 2008-07-04 | 2008-11-19 | 北京交通大学 | Method for automatically acquiring critical data from rail satellite positioning data |
| CN102737393A (en) * | 2012-06-13 | 2012-10-17 | 朱桂永 | Method and system for drawing vector diagram of overhead line |
| CN107168697A (en) * | 2017-04-22 | 2017-09-15 | 华南理工大学 | The line automatic obstacle-avoiding optimization method of graphical programming software |
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Application publication date: 20190322 |
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