CN105426521B - Chart zoom and its method for reading data with three level list structure - Google Patents
Chart zoom and its method for reading data with three level list structure Download PDFInfo
- Publication number
- CN105426521B CN105426521B CN201510888549.3A CN201510888549A CN105426521B CN 105426521 B CN105426521 B CN 105426521B CN 201510888549 A CN201510888549 A CN 201510888549A CN 105426521 B CN105426521 B CN 105426521B
- Authority
- CN
- China
- Prior art keywords
- chart
- index
- sea chart
- sea
- display area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Software Systems (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention relates to chart data index more particularly to a kind of chart zooms and its method for reading data with three level list structure.The present invention designs chart index in chart zoom, can retrieve sea chart by chart index.Simultaneously, devise the inside index of each sea chart, inside index includes object mark classified index and object mark index in corresponding sea chart, according to the object mark classified index and object mark index for needing object target categorical attribute to be shown and characteristic attribute successively to search corresponding sea chart in destination display area, can position needs object mark to be shown, and is shown.The reading speed of chart data is substantially increased by this three level list structure, so that improving sea chart shows speed.
Description
Technical field
The present invention relates to chart data index more particularly to a kind of chart zooms and its number with three level list structure
According to read method.
Background technique
Sea chart shows that process is related to the reading to chart data in chart zoom.It include several seas in chart zoom
Scheme, includes again different types of a large amount of object marks in each sea chart, therefore chart zoom is related to huge data volume.But traditional sea
Chart database designs chart index and object mark classified index due to not having, and causes chart data to read slower, sea chart shows speed
Lowly.
Summary of the invention
The technical problem to be solved by the present invention is to propose a kind of chart zoom and its number with three level list structure
According to read method, to improve the reading speed to chart data.The present invention is implemented as follows:
A kind of chart zoom with three level list structure, chart zoom include several sea charts, chart zoom tool
There is chart index；The chart index includes the index information of each sea chart, and the index information of sea chart includes the overlay area of sea chart
Information；Each sea chart is respectively provided with respective internal index；The internal index includes that object mark classified index and object mark index；It is described
Object mark classified index includes its index information for corresponding to each object mark type in sea chart；The index information of object mark type includes object mark class
The categorical attribute of type；The object mark index includes each object target index information of its counterpart mark type；Object target index information
Including object target characteristic attribute.
Further, the index information of sea chart further includes chart numbering, scale denominator, benchmark latitude circle radius, coordinate times
At least one of multiplying factor, the depth of water times multiplying factor.
Further, in the chart index, the ascending sequence of ruler denominator in proportion of the index information of each sea chart；When having
It is big according to the scale denominator in the index information of the new sea chart when index information of new sea chart imports the chart index
The index information of the new sea chart is imported the chart index by the ordering rule of index information in the small and described chart index.
Further, the index information of object mark type further includes the type object target position, length and number information.
Further, the characteristic attribute include object target length, position, geometric type, affiliated area, with reference to space object
Mark at least one of number, space object mark, direction, space object cursor position.
A kind of method for reading data of the chart zoom with three level list structure, chart zoom include several seas
Figure, chart zoom have chart index；The chart index includes the index information of each sea chart, and the index information of sea chart includes
The coverage area information of sea chart；Each sea chart is respectively provided with respective internal index；The internal index includes object mark classified index
And object mark index；The object mark classified index includes its index information for corresponding to each object mark type in sea chart；The rope of object mark type
Fuse breath includes the categorical attribute of object mark type；The object mark index includes that each object target of its counterpart mark type indexes letter
Breath；Object target index information includes object target characteristic attribute；
Described method includes following steps:
Step 1: reading the chart index, and judge the overlay area of each sea chart and target viewing area in chart zoom
The positional relationship in domain；
Step 2: using overlay area and the destination display area not mutually from each sea chart as the destination display area
Related sea chart；The index information of each correlation sea chart forms related naval atlas catalogue；
Step 3: each related sea chart being read from chart zoom according to related naval atlas catalogue, and extracts each related sea chart
In part in the destination display area, to draw the sea chart of the destination display area；
Step 4: according to needing object target categorical attribute to be shown and characteristic attribute successively to look into the destination display area
The object mark classified index and object mark index for looking for corresponding sea chart, need object mark to be shown with positioning, and shown.
Further, the overlay area of sea chart and destination display area are with maximum latitude, minimum latitude, maximum longitude and most
Small longitude indicates；In the step 1, according to the maximum latitude of the overlay area of each sea chart, minimum latitude, maximum longitude and minimum
The maximum latitude of longitude and destination display area, minimum latitude, maximum longitude and minimum longitude relationship judge chart zoom
In the overlay area of each sea chart and the positional relationship of destination display area.
Further, if the maximum latitude of destination display area, minimum latitude, maximum longitude and minimum longitude are respectively
maxlat X,minlat X,maxlon X,minlon X；The maximum latitude of the overlay area of i-th width sea chart, minimum latitude, most
Big longitude and minimum longitude are respectively maxlat i, minlat i, maxlon i, minlon i；Then:
When meeting following condition for the moment, the overlay area of the i-th width sea chart and destination display area phase from:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
When meeting following condition simultaneously, the overlay area of the i-th width sea chart is included in destination display area:
Maxlat X≥minlati；
Minlat X≤maxlati；
Maxlon X≥minloni；
Minlon X≤maxloni；
When meeting following condition simultaneously, destination display area is included in the overlay area of the i-th width sea chart:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
Remaining situation is that destination display area intersects with the overlay area of the i-th width sea chart.
Compared with prior art, the present invention designs chart index in chart zoom, can be retrieved by chart index
Sea chart.Meanwhile the inside index of each sea chart is devised, inside index includes object mark classified index and object mark rope in corresponding sea chart
Draw, according to the object mark for needing object target categorical attribute to be shown and characteristic attribute successively to search corresponding sea chart in destination display area
Classified index and object mark index, can position needs object mark to be shown, and is shown.Significantly by this three level list structure
The reading speed of chart data is improved, so that improving sea chart shows speed.
Detailed description of the invention
Fig. 1: the three level list structural representation of the chart zoom provided in an embodiment of the present invention with three level list structure
Figure；
Fig. 2: the reading data flow diagram of the chart zoom with three level list structure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
Fig. 1 show the three level list structural schematic diagram of the chart zoom with three level list structure.This has three
The chart zoom of grade index structure includes several sea charts, and chart zoom has chart index 1, and chart index 1 includes each sea
Figure (sea chart 1, sea chart 2, sea chart 3 ..., the index information of sea chart n), the index information of sea chart includes the overlay area letter of sea chart
Breath.The sea chart for meeting querying condition can be found by chart index 1.Meanwhile each sea chart is respectively provided with respective internal index, it can
Draw the object mark inside the sea chart for further searching for having found by the inner cable of each sea chart.Inside index includes that object mark is classified
Index 2 and object mark index 3.Object mark classified index includes its index information for corresponding to each object mark type in sea chart, object mark type
Index information includes the categorical attribute of object mark type.The symbol in corresponding sea chart can be further inquired by object mark classified index 2
Close all types of object marks of querying condition.Object mark index 3 includes each object target index information of its counterpart mark type, object target
Index information includes object target characteristic attribute.It can finally be found in corresponding sea chart by object mark index 3 and meet querying condition
Object target position, to be read and be shown in sea chart.
The inside index of each sea chart together constitutes the three level list structure of chart zoom with chart index 1, passes through sea
Index of the picture 1 can quickly position sea chart, and can quickly position characteristic body mark and space inside sea chart by the inside of sea chart index
Object mark realizes the quick reading to chart data.
The inside index of sea chart 1 is shown in Fig. 1.The inside index structure phase of the inside index and sea chart 1 of other sea charts
Together.Sea chart 1 includes n class object mark in total, and the object mark classified index 2 of sea chart 1 includes the 1st class object target index information, the 2nd class object mark
Index information ... and the n-th class object target index information.It again include n object mark, the 1st class object subject matter mark in 1st class object mark
Index 3 include the index information of object mark 1, object mark 2 index information ..., the index information of object mark n.
The index information of sea chart may also include chart numbering, scale denominator, benchmark latitude circle radius, coordinate times multiplying factor,
The depth of water times multiplying factor etc..In sea chart is shown, the big sea chart of scale bar shows more detailed information, answers when sea chart display
This is paid the utmost attention to.Therefore, on the basis of this three level list structure, can by the index information of each sea chart in proportion ruler denominator by
It is small to sort to big, when the index information for having new sea chart imports chart index 1, according in the index information of the new sea chart
The index information of the new sea chart is imported sea chart rope by the ordering rule of index information in scale denominator size and chart index 1
Draw 1.
The index information of object mark type further includes the type object target position, length and number information.Characteristic attribute includes
Object target length, position, geometric type, affiliated area, with reference to space object mark number, space object mark, direction, space object cursor position
Deng.These index informations also can be used as object target querying condition.
The method for reading data of chart zoom with above-mentioned three level list structure is included the following steps:
Step S1: chart index 1 is read, and judges the overlay area of each sea chart and destination display area in chart zoom
Positional relationship；
Step S2: using overlay area and destination display area not mutually from each sea chart as the related sea of destination display area
Figure；The index information of each correlation sea chart forms related naval atlas catalogue；
Step S3: each related sea chart is read from chart zoom according to related naval atlas catalogue, and extracts each related sea
Part in figure in destination display area, to draw the sea chart of destination display area；
Step S4: according to needing object target categorical attribute to be shown and characteristic attribute successively to search couple in destination display area
The object mark classified index 2 and object mark index 3 for answering sea chart, need object mark to be shown with positioning, and shown.
The overlay area of sea chart and destination display area are with maximum latitude, minimum latitude, maximum longitude and minimum longitude table
Show.It, can be according to the maximum latitude of the overlay area of each sea chart, minimum latitude, maximum longitude and minimum longitude and target in step 1
The maximum latitude of display area, minimum latitude, maximum longitude and minimum longitude relationship judge each sea chart in chart zoom
The positional relationship of overlay area and destination display area.
For example, setting the maximum latitude of destination display area, minimum latitude, maximum longitude and minimum longitude is respectively maxlat
X,minlat X,maxlon X,minlon X；The maximum latitude of the overlay area of i-th width sea chart, minimum latitude, maximum longitude
And minimum longitude is respectively maxlat i, minlat i, maxlon i, minlon i；Then:
When meeting following condition for the moment, the overlay area of the i-th width sea chart and destination display area phase from:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
When meeting following condition simultaneously, the overlay area of the i-th width sea chart is included in destination display area:
Maxlat X≥minlati；
Minlat X≤maxlati；
Maxlon X≥minloni；
Minlon X≤maxloni；
When meeting following condition simultaneously, destination display area is included in the overlay area of the i-th width sea chart:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
Remaining situation is that destination display area intersects with the overlay area of the i-th width sea chart.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of method for reading data of the chart zoom with three level list structure, which is characterized in that chart zoom packet
Several sea charts are included, chart zoom has chart index；The chart index includes the index information of each sea chart, the index of sea chart
Information includes the coverage area information of sea chart；Each sea chart is respectively provided with respective internal index；The internal index includes object mark
Classified index and object mark index；The object mark classified index includes its index information for corresponding to each object mark type in sea chart；Object mark
The index information of type includes the categorical attribute of object mark type；The object mark index includes each object target of its counterpart mark type
Index information；Object target index information includes object target characteristic attribute；
Described method includes following steps:
Step 1: reading the chart index, and judge the overlay area of each sea chart and destination display area in chart zoom
Positional relationship；
Step 2: using overlay area and the destination display area not mutually from each sea chart as the phase of the destination display area
Close sea chart；The index information of each correlation sea chart forms related naval atlas catalogue；
Step 3: each related sea chart being read from chart zoom according to related naval atlas catalogue, and is extracted in each related sea chart
Part in the destination display area, to draw the sea chart of the destination display area；
Step 4: according to needing object target categorical attribute to be shown and characteristic attribute successively to search pair in the destination display area
The object mark classified index and object mark index for answering sea chart, need object mark to be shown with positioning, and shown.
2. method for reading data as described in claim 1, which is characterized in that the overlay area of sea chart and destination display area with
Maximum latitude, minimum latitude, maximum longitude and minimum longitude indicate；In the step 1, most according to the overlay area of each sea chart
The maximum latitude of big latitude, minimum latitude, maximum longitude and minimum longitude and destination display area, minimum latitude, maximum longitude
And the relationship of minimum longitude judges the positional relationship of the overlay area of each sea chart and destination display area in chart zoom.
3. method for reading data as claimed in claim 2, which is characterized in that set maximum latitude, the minimum of destination display area
Latitude, maximum longitude and minimum longitude are respectively maxlat X, minlat X, maxlon X, minlon X；I-th width sea chart
The maximum latitude of overlay area, minimum latitude, maximum longitude and minimum longitude are respectively maxlat i, minlat i, maxlon
i,minlon i；Then:
When meeting following condition for the moment, the overlay area of the i-th width sea chart and destination display area phase from:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
When meeting following condition simultaneously, the overlay area of the i-th width sea chart is included in destination display area:
Maxlat X≥minlati；
Minlat X≤maxlati；
Maxlon X≥minloni；
Minlon X≤maxloni；
When meeting following condition simultaneously, destination display area is included in the overlay area of the i-th width sea chart:
Maxlat X≤minlati；
Minlat X≥maxlati；
Maxlon X≤minloni；
Minlon X≥maxloni；
Remaining situation is that destination display area intersects with the overlay area of the i-th width sea chart.
4. method for reading data as described in claim 1, which is characterized in that the index information of the sea chart further includes that sea chart is compiled
Number, at least one of scale denominator, benchmark latitude circle radius, coordinate times multiplying factor, the depth of water times multiplying factor.
5. method for reading data as claimed in claim 4, which is characterized in that in the chart index, the index of each sea chart is believed
Cease the ascending sequence of ruler denominator in proportion；It is new according to this when the index information for having new sea chart imports the chart index
Sea chart index information in scale denominator size and the chart index in index information ordering rule this is new
The index information of sea chart imports the chart index.
6. method for reading data as described in claim 1, which is characterized in that the index information of the object mark type further includes this
Type object target position, length and number information.
7. method for reading data as described in claim 1, which is characterized in that the characteristic attribute includes object target length, position
Set, geometric type, affiliated area, with reference at least one of space object mark number, space object mark, direction, space object cursor position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888549.3A CN105426521B (en) | 2015-12-04 | 2015-12-04 | Chart zoom and its method for reading data with three level list structure |
| PCT/CN2016/107492 WO2017092636A1 (en) | 2015-12-04 | 2016-11-28 | Marine chart database having three-tier index architecture and method for reading data therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888549.3A CN105426521B (en) | 2015-12-04 | 2015-12-04 | Chart zoom and its method for reading data with three level list structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105426521A CN105426521A (en) | 2016-03-23 |
| CN105426521B true CN105426521B (en) | 2019-04-23 |
Family
ID=55504733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510888549.3A Active CN105426521B (en) | 2015-12-04 | 2015-12-04 | Chart zoom and its method for reading data with three level list structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105426521B (en) |
| WO (1) | WO2017092636A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105426521B (en) * | 2015-12-04 | 2019-04-23 | 深圳大学 | Chart zoom and its method for reading data with three level list structure |
| US11410112B2 (en) | 2017-10-27 | 2022-08-09 | Accenture Global Solutions Limited | Industrial data service, data modeling, and data application platform |
| CN108280194B (en) * | 2018-01-26 | 2019-05-21 | 重庆市地理信息中心 | A kind of search and methods of exhibiting towards complex space data |
| CN110503353B (en) * | 2018-05-16 | 2022-04-01 | 北京三快在线科技有限公司 | Distribution area expression method and device |
| CN113297200A (en) * | 2020-06-24 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Data storage and acquisition method and device, electronic equipment and readable storage medium |
| CN113902615B (en) * | 2021-01-08 | 2024-03-01 | 中国船舶重工集团公司第七0七研究所 | Quick seamless splicing display method for electronic chart |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582091A (en) * | 2009-06-10 | 2009-11-18 | 凌阳科技股份有限公司 | Lexicon creation method and system as well as corresponding word searching method and system |
| CN104778024A (en) * | 2015-04-23 | 2015-07-15 | 深圳大学 | Electronic chart displaying method and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459557B (en) * | 2008-11-29 | 2011-02-02 | 成都市华为赛门铁克科技有限公司 | Secure logging centralized storage method and device |
| CN101833986B (en) * | 2010-05-20 | 2011-10-05 | 哈尔滨工业大学 | Method for creating three-stage audio index and audio retrieval method |
| US8600925B2 (en) * | 2011-06-23 | 2013-12-03 | Microsoft Corporation | Object-relational mapped database initialization |
| CN105426521B (en) * | 2015-12-04 | 2019-04-23 | 深圳大学 | Chart zoom and its method for reading data with three level list structure |
-
2015
- 2015-12-04 CN CN201510888549.3A patent/CN105426521B/en active Active
-
2016
- 2016-11-28 WO PCT/CN2016/107492 patent/WO2017092636A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582091A (en) * | 2009-06-10 | 2009-11-18 | 凌阳科技股份有限公司 | Lexicon creation method and system as well as corresponding word searching method and system |
| CN104778024A (en) * | 2015-04-23 | 2015-07-15 | 深圳大学 | Electronic chart displaying method and system |
Non-Patent Citations (1)
| Title |
|---|
| 电子海图空间数据索引结构及检索算法研究;李刚等;《中国航海》;20060228;第4-7页 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017092636A1 (en) | 2017-06-08 |
| CN105426521A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105426521B (en) | Chart zoom and its method for reading data with three level list structure | |
| Schulz et al. | A multi-indicator approach for geolocalization of tweets | |
| CN107229659B (en) | Information searching method and device | |
| CN104428792B (en) | Parameter selection and coarse localization for the interest region of maximum stable extremal region processing | |
| CN104424261B (en) | Information displaying method based on electronic map and device | |
| JP5390840B2 (en) | Information analyzer | |
| CN103488423A (en) | Method and device for implementing bookmark function in electronic reader | |
| Li et al. | Mining trajectory data and geotagged data in social media for road map inference | |
| CN104537098B (en) | CAD diagram paper search method based on GIS technology | |
| CN107203526B (en) | Query string semantic demand analysis method and device | |
| CN105869513A (en) | Method and apparatus for displaying associated mark points on electronic map interface | |
| CN104778190B (en) | Method for obtaining map and electronic device | |
| CN103426191A (en) | Method and system for picture marking | |
| CN107247791B (en) | Parking lot map data generation method and device and machine-readable storage medium | |
| US9208171B1 (en) | Geographically locating and posing images in a large-scale image repository and processing framework | |
| Jaiswal et al. | Predicting time-sensitive user locations from social media | |
| Joseph et al. | New perspectives in political ethnography | |
| CN103646038A (en) | Method and device for processing data of electronic search result | |
| Castellani Ribeiro et al. | An urban data profiler | |
| CN105159885A (en) | Point-of-interest name identification method and device | |
| JP2008158531A (en) | Method and apparatus for automatically identifying region of interest in digital map | |
| CN107221007A (en) | A kind of unmanned vehicle monocular visual positioning method based on characteristics of image dimensionality reduction | |
| CN109614558A (en) | A kind of more locating travel log automatic generation methods and system | |
| CN105845020A (en) | Real-scene map making method and device | |
| US20150347603A1 (en) | System for providing information relating to points of interest |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |