CN101458819A - System and method for adaptive electronic map symbolic - Google Patents
System and method for adaptive electronic map symbolic Download PDFInfo
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- CN101458819A CN101458819A CNA2008102398484A CN200810239848A CN101458819A CN 101458819 A CN101458819 A CN 101458819A CN A2008102398484 A CNA2008102398484 A CN A2008102398484A CN 200810239848 A CN200810239848 A CN 200810239848A CN 101458819 A CN101458819 A CN 101458819A
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Abstract
The invention discloses a system for adapting the symbols of electronic map and a method thereof, for automatically refreshing the map symbols corresponding to the objects and areas in map when spatial information is refreshed. The system comprises a map symbol description module for organizing the geometric data, property setting data and later-binding interface data for each element of map symbols, and providing an adjusting interface for map symbol forms; a map symbol form adjusting module for obtaining element property characters of the map symbols after refreshing spatial information; a map symbol display module as the medium between the map symbol description module and the map symbol form adjusting module, for obtaining and outputting refreshed map symbols via the map symbol form adjusting module to corresponding map layers, thereby completing adaptive adjustment of map symbols.
Description
Technical field
The present invention relates to the computer mapping technology field, particularly a kind of system and method for user oriented adaptive electronic map symbolic.
Background technology
Map symbol is the language of map, is the most important means of current electronic map expression of space information, and the form of map symbol can be realized with the variation that spatial data shows synchronously, is the long-term gordian technique of exploring of computer graphics field.
In the prior art, the electronic map symbolic aspect mainly concentrates on the description of map symbol and the computer automatic drafting aspect of map symbol, as: Chinese patent application number is the documents of 200710053790.X, and a kind of computer automatic drafting method of complicated map symbol is provided; Perhaps map elements example symbolism method, and do not relate to modification to map symbol model provides a kind of method for symbolization of geographic element case as: Chinese patent application number for 200810047723.1 documents.
In in the past for the research that realizes the adaptive change of electronic map symbolic form, mainly contain special layer method and map elements example symbolism method, though they all have its points of course, can't satisfy the demand that the electronic chart dynamic real-time shows, and have following problem:
(1) special layer method can be expressed a certain attribute of area feature easily, such as the population histogram of each province, but powerless to the attribute of linear ground object and point-like atural object, and expression-form is limited, such as histogram, cake chart, pyramid or the like.
(2) map elements example symbolism method can select a specific symbol for each atural object, but this symbolism scheme is static, can not realize the self-adaptation adjustment of map symbol.After the spatial information of a certain atural object changes, reindexing that must be artificial or change the variation that other map symbol masterplate just can give expression to spatial information, changing condition that obviously can not the various atural object spatial informations of adaptive expression.
To sum up, the electronic chart of prior art is not considered the adaptivity of map symbol, and electronic chart can not upgrade with correct real-time expression of space information automatically along with the variation that geographical spatial data shows.
Summary of the invention
Technical matters to be solved by this invention is, a kind of system and method for adaptive electronic map symbolic is provided, realize map symbol can be at any time according to the form of the synchronous adjustment self of the variation of spatial information, can be along with the variation that geographical spatial data shows be upgraded automatically, real-time correct expression of space information.
For achieving the above object, the invention provides a kind of system of adaptive electronic map symbolic, be used for when spatial information upgrades, system upgrades the map symbol of corresponding atural object in the map automatically, it is characterized in that, and this system comprises:
The map symbol describing module, geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided;
Map symbol form adjusting module is used to obtain the key element property parameters that spatial information upgrades the back map symbol;
The map symbol display module, as mutual intermediary between this map symbol describing module and this map symbol form adjusting module, obtain the map symbol after the renewal and output to again in the corresponding map figure layer by this map symbol form adjusting module, finish the self-adaptation adjustment of map symbol.
The system of above-mentioned adaptive electronic map symbolic is characterized in that, described map symbol display module further comprises:
Upgrade judge module, be used for when spatial information changes, determine to need to upgrade the map symbol map object;
Trigger update module, be used for when spatial information changes, trigger the map symbol display module and remove to upgrade corresponding map symbol according to the map object that the needs of determining upgrade;
The output display module is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.
The system of above-mentioned adaptive electronic map symbolic is characterized in that, described triggering update module further comprises:
The information interaction module, be used for when update displayed is carried out in the triggering of spatial information update event, to the request of described map symbol describing module and obtain the corresponding map symbol data, the strategy of this map symbol adjustment and corresponding spatial information are passed to described map symbol form adjusting module, and to the new property parameters of this this map symbol of map symbol form adjusting module acquisition request.
The system of above-mentioned adaptive electronic map symbolic is characterized in that, the interface data of described " binding in evening " is described by the statistical items definition.
The system of above-mentioned adaptive electronic map symbolic is characterized in that, described map form adjusting module individual packages series of algorithms is to provide the adjustment strategy of multiple map symbol.
Above-mentioned adaptive electronic map symbolic system is characterized in that described map form adjusting module provides a unified interface to the user.
The system of above-mentioned adaptive electronic map symbolic, it is characterized in that, described " binding in evening " is that map symbol is when showing, the relevant information in the denotational description is according to the map just used corresponding strategy to call the form attribute that relative strategy in the described map symbol signal adjusting module obtains map symbol and is shown.
Further, the present invention also provides a kind of method of adaptive electronic map symbolic, is used for upgrading the map symbol of corresponding atural object in the map automatically when spatial information upgrades, and it is characterized in that this method comprises:
Map symbol is described step, and geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided;
Map symbol form set-up procedure is used to obtain the key element property parameters that spatial information upgrades the back map symbol;
The map symbol step display, be used to provide described map symbol to describe mutual between step and this map symbol form set-up procedure, and utilize the map symbol that obtains in the map form set-up procedure after the renewal to output to again in the corresponding map figure layer, finish the self-adaptation adjustment of map symbol.
The method of above-mentioned adaptive electronic map symbolic is characterized in that, described map symbol step display further comprises:
Upgrade determining step, be used for when spatial information changes, determine to need to upgrade the map object of map symbol;
Trigger step of updating, be used for when spatial information changes, according to the correspondingly renewal of schematic symbol of map object triggering carrying out of the needs renewal of determining;
The output step display is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.
The method of above-mentioned adaptive electronic map symbolic is characterized in that, described triggering step of updating further comprises:
When update displayed is carried out in the triggering of spatial information update event, ask and obtain the corresponding map symbol data;
Provide the adjustment strategy of this map symbol and corresponding spatial information to carry out the adjustment of map symbol form according to these map symbol data;
Ask and obtain the new property parameters of this map symbol, carry out map symbol and upgrade.
Compared with prior art, the system and method for adaptive electronic map symbolic provided by the invention, by introducing the thought of " binding in evening ", realized that electronic map symbolic can change automatically along with the renewal of geographical spatial data demonstration, can be along with the variation that geographical spatial data shows is upgraded automatically, correct expression of space information has satisfied the requirement of electronic chart to map symbol in real time, has reached practical function.
Description of drawings
Fig. 1 is the system architecture schematic block diagram of adaptive electronic map symbolic of the present invention;
Fig. 2 is a system shown in Figure 1 module invokes workflow synoptic diagram;
Fig. 3 is the method flow diagram of adaptive electronic map symbolic of the present invention;
Fig. 4 is the concrete implementing procedure figure that triggers step of updating in the inventive method;
Fig. 5 is provided with the interface synoptic diagram for the present invention's opposite attribute of an element in map symbol is made;
The interface synoptic diagram that Fig. 6 is provided with symbol incident space data community when map symbol uses for the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail, with purpose, scheme and the effect that further specifies the present invention, but not as the restriction to claim protection domain of the present invention.
The present invention is for setting up the adaptive electronic map symbolic system, realize when spatial information upgrades, the form of the synchronous renewal self of the map symbol of corresponding atural object in the map reaches under the unmanned interference situation the adaptive variation of map symbol to give full expression to the changing condition of spatial information.
Fig. 1 shows the primary structure of the system of adaptive electronic map symbolic of the present invention, with reference to figure 1, this system comprises: map symbol describing module 10, geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided; Map symbol form adjusting module 11 is used to obtain the key element property parameters that spatial information upgrades the back map symbol; Map symbol display module 12, as this map symbol describing module 10 and this 11 mutual intermediaries of map symbol form adjusting module, obtain the map symbol after the renewal and output to again in the corresponding map figure layer by this map symbol form adjusting module 11, finish the self-adaptation adjustment of map symbol.Map symbol display module 12 further comprises: upgrade judge module 121, be used for when spatial information changes, determine to need to upgrade the map symbol map object; Trigger update module 122, be used for when spatial information changes, trigger the map symbol display module and remove to upgrade corresponding map symbol according to the map object that the needs of determining upgrade; Output display module 123 is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.Triggering update module 122 further comprises: information interaction module 1221, be used for when update displayed is carried out in the triggering of spatial information update event, ask and obtain the corresponding map symbol data to described map symbol describing module 10, the strategy of this map symbol adjustment and corresponding spatial information are passed to described map symbol form adjusting module 11, and to the new property parameters of these map symbol form adjusting module 11 these map symbols of acquisition request.
Specifically being described below of each module of system:
Map symbol describing module 10: the map symbol describing module is responsible for organizing the geometric data and the attribute configuration data of each key element of symbol.Schematic symbol also needs to comprise the interface data of support " binding in evening " except the data that should comprise each element of forming symbol adaptively, and for example the definition of statistical symbol is described below:
<CHARTSYMBOL
Antialiasing=" true|false " [false] is smooth
Maxsize=" 1-NNN " full-size
Maxvalue=" 1-NNN " greatest measure
Minsize=" 1-NNN " minimum dimension
Minvalue=" 1-NNN " minimum value
Mode=" pie|bar|bleb|3Dbar " [pie] statistical symbol pattern
Outline=" 0,0,0-255,255,255 " [none] profile color
Shadow=" 0,0,0-255,255,255 " [none] shadow color
Size=" 1-NNN " size
Sizefield=" string " size field
Transparency=" 0.0-1.0 " [1.0] transparency
>
(m)＜CHARTVALUE.../the statistical items definition
</CHARTSYMBOL>
Wherein, except that the statistical items definition, remaining attribute all is the description and the character of each key element of map symbol, and is identical with traditional description Model of Map Symbols; Statistical items definition is in order to realize " binding in evening ", and it is defined as follows:
<CHARTVALUE
The field that Lookupfield=" string " uses
Color=" 0,0,0-255,255,255 " [0,0,0] color
Lower=" integer " minimum value
Upper=" integer " maximal value
Value=" integer " numerical value
>
</CHARTVALUE>
When the data of Lookupfield field changed, statistical items can in time obtain notice, and associated then statistical symbol all can obtain according to the situation of change of spatial information upgrading.
The form adjusting module 12 of map symbol: this module adopts strategy pattern (Strategy pattern), the strategy and the algorithm of various adjustment map symbol forms have been encapsulated, satisfy the demand that the expression of space data presentation changes, separate encapsulation between multiple algorithm such as monodrome method, segmentation ordered series of numbers, the progression stage division, make its variation be independent of other module, can increase the dirigibility and the extensibility of system along with the new algorithm of user's increase in demand.
This module provides a unified interface to the user:
int?Adjust(Type?strategy，void
*arguments，void
*result)；
Type strategy: the algorithm that appointment will be used;
Void
*Arguments: point to the pointer of storage of variables, will provide different parameters according to different algorithms;
Void
*Result: point to the pointer of return results, will use different structures according to different algorithms;
The rreturn value of interface function is represented the result of algorithm invokes, if the task of completing successfully then returns 0; Otherwise return a negative integer, the type that expression is wrong.The user just can use a unified function call to use different algorithms like this, has guaranteed unitarity and the convenience used.
Map symbol display module 12: this module adopts tertium quid's pattern (Mediator pattrem), this module as intermediary's object encapsulation 11 of form adjusting modules mutual of map symbol describing module 10 and map symbol, in the Mediator Design Mode, bearing tertium quid's role, making does not need explicit quoting mutually between map symbol describing module 10 and the map symbol form adjusting module 11, thereby make its coupling loose, can change mutual between them independently, and the user has been hidden the complex process that symbol shows, provide a transparent map symbol display interface to the user.
When spatial information changes, map system will carry out full figure or the part be carried out in the zone of upgrading refresh, and this action will be finished in the presence of map symbol display module.
Fig. 2 calls the workflow synoptic diagram for system module.With reference to figure 2, among the figure, this Event triggered map symbol display module 12 of A representation space information updating removes to upgrade corresponding map symbol; B represents that map symbol display module 12 is to map symbol describing module 10 request corresponding map symbol datas; C represents that map symbol describing module 10 offers map symbol display module 12 with the map symbol data; D represents that map symbol display module 12 passes to map symbol form adjusting module with the strategy and the corresponding spatial information of map symbol adjustment, and requires to calculate the new property parameters of map symbol; E represents to refer to that map symbol form adjusting module 11 returns to map symbol display module 12 with result calculated; F represents that the map symbol that map symbol display module 12 will recomputate outputs in the corresponding map figure layer again, finishes the process that the map symbol self-adaptation is adjusted.
The present invention also further provides the method for using the adaptive electronic map symbolic of said system, and Fig. 3 shows the idiographic flow of this method, and with reference to figure 3, the method for adaptive electronic map symbolic of the present invention may further comprise the steps:
S10, map symbol is described step, and geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided;
S11, map symbol form set-up procedure is used to obtain the key element property parameters that spatial information upgrades the back map symbol;
S12, the map symbol step display, be used to provide described map symbol to describe mutual between step and this map symbol form set-up procedure, and utilize the map symbol that obtains in the map form set-up procedure after the renewal to output to again in the corresponding map figure layer, finish the self-adaptation adjustment of map symbol.
Above-mentioned map symbol step display S12 further comprises:
S121 upgrades determining step, is used for when spatial information changes, and determines to need to upgrade the map object of map symbol;
S122 triggers step of updating, is used for when spatial information changes, according to the correspondingly renewal of schematic symbol of map object triggering carrying out of the needs renewal of determining;
S123, the output step display is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.
Fig. 4 shows the concrete implementing procedure that triggers step of updating, please refer to Fig. 4, triggers step of updating S122 and further comprises:
S221 when update displayed is carried out in the triggering of spatial information update event, asks and obtains the corresponding map symbol data;
S222 provides the adjustment strategy of this map symbol and corresponding spatial information to carry out the adjustment of map symbol form according to these map symbol data;
S223 asks and obtains the new property parameters of this map symbol, carries out map symbol and upgrades.
Fig. 5-Fig. 6 has schematically represented the several steps of schematic symbol key in making and use adaptively.Shown in Figure 5 is opposite attribute of an element setting in map symbol is made, wherein outline line and Fill Color are set to user's setting, comprise that the user is set at a certain constant color and the color value that is set to come according to the property value of a certain space attribute field compute sign; Fig. 6 is the interface that when map symbol uses symbol incident space data community is provided with, wherein the outline line of surface element is set at and determines according to " population " property value of the geographic object of its expression that color, Fill Color are set at according to it and represent " GDP " property value of geographic object to determine.After these settings, when the spatial data display update, atural object corresponding map symbol just can change the change with expressing information automatically.
The present invention makes " binding in evening " become possibility by map symbol form adjustment tactful independent become a module.The attribute of traditional map symbol system each key element in the description of symbol is fixed, and can not realize " binding in evening "; The method of special layer then makes the method for adjustment of symbol form and symbol mixes fully rather than two aspects independently, also can not realize " binding in evening ".Schematic symbol is then different fully adaptively, the information that in the data of description of symbol, has comprised realization " binding in evening ", when symbol shows, just according to the relevant information in the denotational description, use the form attribute of the corresponding algorithm computation symbol in the corresponding strategy invocation map symbol form adjusting module, realized the purpose that its form is just finally determined when symbol shows, also promptly realized " binding in evening ", made symbol have the ability that self-adaptation is adjusted with the spatial information variation.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1, a kind of system of adaptive electronic map symbolic is used for when spatial information upgrades, and system upgrades the map symbol of corresponding atural object in the map automatically, it is characterized in that, this system comprises:
The map symbol describing module, geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided;
Map symbol form adjusting module is used to obtain the key element property parameters that spatial information upgrades the back map symbol;
The map symbol display module, as mutual intermediary between this map symbol describing module and this map symbol form adjusting module, obtain the map symbol after the renewal and output to again in the corresponding map figure layer by this map symbol form adjusting module, finish the self-adaptation adjustment of map symbol.
2, the system of adaptive electronic map symbolic according to claim 1 is characterized in that, described map symbol display module further comprises:
Upgrade judge module, be used for when spatial information changes, determine to need to upgrade the map symbol map object;
Trigger update module, be used for when spatial information changes, trigger the map symbol display module and remove to upgrade corresponding map symbol according to the map object that the needs of determining upgrade;
The output display module is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.
3, the system of adaptive electronic map symbolic according to claim 2 is characterized in that, described triggering update module further comprises:
The information interaction module, be used for when update displayed is carried out in the triggering of spatial information update event, to the request of described map symbol describing module and obtain the corresponding map symbol data, the strategy of this map symbol adjustment and corresponding spatial information are passed to described map symbol form adjusting module, and to the new property parameters of this this map symbol of map symbol form adjusting module acquisition request.
4, the system of adaptive electronic map symbolic according to claim 1 is characterized in that, the interface data of described " binding in evening " is described by the statistical items definition.
5, the system of adaptive electronic map symbolic according to claim 1 is characterized in that, described map form adjusting module individual packages series of algorithms is to provide the adjustment strategy of multiple map symbol.
6, adaptive electronic map symbolic according to claim 1 system is characterized in that described map form adjusting module provides a unified interface to the user.
7, the system of adaptive electronic map symbolic according to claim 1, it is characterized in that, described " binding in evening " is that map symbol is when showing, the relevant information in the denotational description is according to the map just used corresponding strategy to call the form attribute that relative strategy in the described map symbol signal adjusting module obtains map symbol and is shown.
8, a kind of method of adaptive electronic map symbolic is used for upgrading the map symbol of corresponding atural object in the map automatically when spatial information upgrades, and it is characterized in that this method comprises:
Map symbol is described step, and geometric data, the attribute configuration data that are used for each key element of organizing map symbol reach the interface data of " binding in evening ", and the adjustment interface of map symbol form is provided;
Map symbol form set-up procedure is used to obtain the key element property parameters that spatial information upgrades the back map symbol;
The map symbol step display, be used to provide described map symbol to describe mutual between step and this map symbol form set-up procedure, and utilize the map symbol that obtains in the map form set-up procedure after the renewal to output to again in the corresponding map figure layer, finish the self-adaptation adjustment of map symbol.
9, the method for adaptive electronic map symbolic according to claim 8 is characterized in that, described map symbol step display further comprises:
Upgrade determining step, be used for when spatial information changes, determine to need to upgrade the map object of map symbol;
Trigger step of updating, be used for when spatial information changes, according to the correspondingly renewal of schematic symbol of map object triggering carrying out of the needs renewal of determining;
The output step display is used for the map symbol after upgrading is outputed to corresponding map figure layer again, and shows.
10, the method for adaptive electronic map symbolic according to claim 9 is characterized in that, described triggering step of updating further comprises:
When update displayed is carried out in the triggering of spatial information update event, ask and obtain the corresponding map symbol data;
Provide the adjustment strategy of this map symbol and corresponding spatial information to carry out the adjustment of map symbol form according to these map symbol data;
Ask and obtain the new property parameters of this map symbol, carry out map symbol and upgrade.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706813A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院地理科学与资源研究所 | Map symbol library management system and method based on self-adaptation mechanism |
| CN108022273A (en) * | 2016-10-28 | 2018-05-11 | 中国测绘科学研究院 | A kind of figure number Detachable drafting method and system |
-
2008
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706813A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院地理科学与资源研究所 | Map symbol library management system and method based on self-adaptation mechanism |
| CN101706813B (en) * | 2009-11-27 | 2012-10-10 | 中国科学院地理科学与资源研究所 | Map symbol library management system and method based on self-adaptation mechanism |
| CN108022273A (en) * | 2016-10-28 | 2018-05-11 | 中国测绘科学研究院 | A kind of figure number Detachable drafting method and system |
| CN108022273B (en) * | 2016-10-28 | 2021-08-17 | 中国测绘科学研究院 | Picture number detachable picture making method |
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