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Method and system for processing drawing of map labels

A processing method and a technology of a processing system, applied in the field of map annotation drawing processing and map annotation drawing processing system, can solve problems such as slowing down the display speed of map components, affecting the map's appearance and operation, and failing to satisfy the use of maps, etc., to achieve reduction The effect of drawing quantity, facilitating map operation, and speeding up the display speed

Active Publication Date: 2015-07-08
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large amount of data in the geographic information system, the text labeling information of geographic elements on the GIS map is very dense, especially when zooming to a larger display range, the labels will overlap each other, and a large number of labels will overwhelm what should be The rendered map data seriously affects the aesthetics and operation of the map
Especially for some maps with a high level of data refinement, the data level can reach 100,000 or even tens of millions. The drawing of labels will seriously slow down the display speed of map components, and even refresh once every 10 to 20 seconds. Can't satisfy normal map use at all

Method used

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  • Method and system for processing drawing of map labels
  • Method and system for processing drawing of map labels

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] like figure 1 As shown, it is a schematic flow chart of the drawing processing method of map labeling in an embodiment of the present invention, including the following steps:

[0021] S11. Obtain the first occupied range of each displayed mark on the currently displayed map;

[0022] Before drawing the labels to be displayed, you can first obtain all the labels drawn and displayed on the currently displayed map, as well as the occupied range of each displayed label; if the currently displayed map contains too many labels, a large number of labels will overlap each other; In this step, first obtain the label that has been drawn and displayed on the map, and obtain its occupied range; on the currently displayed map, drawing a text label of a geographic element needs t...

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Abstract

The invention provides a method and a system for processing drawing of map labels. The method comprises steps of acquiring first occupied ranges of every displayed labels of a current displaying map; acquiring labels to be displayed and calculating second occupied ranges of labels to be displayed; comparing second occupied ranges of labels to be displayed with first occupied ranges of every displayed labels; and drawing and displaying labels to be displayed if second occupied ranges of labels to be displayed and first occupied ranges of every displayed labels are not overlapped. The invention also provides a system for processing drawing of map labels. By the aid of the method and the system, the drawing speed of map labels can be accelerated, labels cannot be overlapped and the map operation is not affected.

Description

technical field [0001] The invention relates to the technical field of map processing, in particular to a method for drawing and processing map annotations, and a system for drawing and processing map annotations. Background technique [0002] With the development of GIS (Geographic Information System, geographic information system), the marking function on the map has been widely used in many fields. Due to the large amount of data in the geographic information system, the text labeling information of geographic elements on the GIS map is very dense, especially when zooming to a larger display range, the labels will overlap each other, and a large number of labels will overwhelm what should be The presented map data seriously affects the aesthetics and operation of the map. Especially for some maps with a high degree of data refinement, the data level can reach 100,000 or even tens of millions. The drawing of labels will seriously slow down the display speed of map compone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B29/10
Inventor 纪顺玉
Owner GUANGDONG VTRON TECH CO LTD
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