CN110597428B - GIS data acquisition method - Google Patents
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- CN110597428B CN110597428B CN201910864411.8A CN201910864411A CN110597428B CN 110597428 B CN110597428 B CN 110597428B CN 201910864411 A CN201910864411 A CN 201910864411A CN 110597428 B CN110597428 B CN 110597428B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/10—Geometric effects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/048—Indexing scheme relating to G06F3/048
- G06F2203/04808—Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
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Abstract
The invention belongs to the technical field of geographic information methods, and discloses a GIS data acquisition method, which comprises the following operations: after the starting node is created, a touch screen is touched by fingers, and if the starting node is within the range of the starting node, drawing is continued; if not, judging whether the finger touches the screen and then releases the screen immediately, if so, drawing a node at the finger click position, otherwise, storing the drawn node and then rendering the current screen data; when the drawing is continued, the mobile terminal presses the node range by fingers to display a magnifying glass for assistance at the upper left corner of the screen, if the other finger presses the screen at the same time, a single node is drawn, and if the other finger presses the screen, a continuous node is drawn; when a node, a single node or continuous nodes are drawn, starting an auxiliary tool for adjusting the nodes; and when the drawing of each node is finished, generating a geometric object according to the drawn node and displaying the geometric object on a screen. The invention makes the data collection process of the method more flexible and efficient, and various drawing modes included in the collection module can be switched at will in the data collection process.
Description
Technical Field
The invention relates to the technical field of geographic information methods, in particular to a GIS data acquisition method.
Background
With the continuous development of a mobile geographic information method GIS, a GIS data rendering, collecting and editing platform based on a large data volume of a mobile terminal is often applied to field data investigation and collection work. The field data investigation and collection work is carried out, and workers often need to carry remote sensing images and corresponding interior data to field work to carry out data collection and editing work; during data acquisition, as most of screens of the existing handheld mobile GIS terminals are small, the interaction mode is single, and the operation of field workers on the screens by using fingers to acquire GIS data is very difficult; if the interactive mode is single or the mobile GIS terminal which can not provide a set of complete acquisition editing process modules is adopted, the efficiency of data acquisition is directly influenced.
Disclosure of Invention
In view of the problems of difficulty in data acquisition, low efficiency and the like in the prior art, it is desirable to provide a GIS data acquisition method.
The invention is realized by the following technical scheme:
a GIS data acquisition method comprises the following steps of drawing a geometric object graph, and acquiring data when the geometric object graph is drawn:
s10) creating a start node
After a user clicks a drawing tool through a finger to select a function of drawing a geometric object, the user lifts the finger to click the position of a drawing starting point and releases the function, the mobile terminal creates a starting node on a screen, and after a schematic ring representing the node range is displayed outside the node, the user clicks the screen again through the finger;
s20) judging whether the re-clicking position of the finger of the user is within the range of the schematic circle or not
If the finger click position of the user is not within the range of the schematic circle, executing the step S30;
if the finger click position of the user is within the range of the schematic circle, executing step S40;
s30) judging whether the finger of the user is immediately lifted up after clicking again
If the user finger is not lifted after clicking, storing the current drawn node until the user finger is lifted to render the current screen data;
if the user' S finger is lifted up immediately after clicking, drawing a node at the finger click position, and executing step S60 after finishing drawing the node;
s40) pressing down by the finger of the user within the range of the schematic circle
Pressing down the finger of the user within the current schematic circle range, and then, generating a magnifier for magnifying and drawing the initial node process at the upper left corner of the screen of the mobile terminal; observing the position of the current node by using a magnifying glass while sliding the finger and executing step S50);
s50) determining whether the user has another finger pressed on the screen
If the user operates with a single finger, sliding the finger to draw continuous nodes;
if the user presses the screen by two fingers, lifting the fingers to draw a single node or continuous nodes;
s60) using an auxiliary tool
When continuous nodes or single nodes are drawn, the following auxiliary tools are adopted for drawing:
if the errors occur in the nodes for drawing the geometric objects, the auxiliary tools are utilized to withdraw the nodes or recover the nodes,
if the existing geometric figure nodes exist, single-point capturing or continuous capturing is adopted;
if a forest belt, a road surface or a river surface with fixed width exists, reverse drawing or buffering surface forming treatment is adopted during drawing;
s70) generating geometric objects
After the user finishes the drawing of the geometric object node, clicking and finishing, and generating a geometric object by the mobile terminal according to the drawn node;
s80) for highlighting
After the drawn geometric object is completed, the mobile terminal highlights the geometric object.
The S10) the mobile terminal creates the start node on the screen in one or more of the following manners: GPS sampling points, continuous sampling points, cross plotting points, or coordinate plotting points.
The mode of the GPS sampling point establishing starting node is as follows: and clicking the screen by a user finger, clicking a GPS acquisition point by the finger after starting the GPS service of the mobile terminal, and drawing a node in the screen by the mobile terminal according to the current GPS positioning coordinate.
The mode of establishing the starting node by the continuous sampling point is as follows: setting a sampling mode and a sampling rate of continuous sampling points according to the distance length or time interval; after the user clicks continuous sampling by fingers, the mobile terminal records the user movement track acquisition graph nodes according to the set sampling mode and sampling rate, and draws the graph nodes on a screen.
The method for creating the starting node by the cross-shaped drawing point comprises the following steps: after a user clicks the drawing tool with a finger, the cross hair is displayed in the center of the screen of the mobile terminal, the user slides the screen with the finger to enable the cross hair to be overlapped with the position of the boundary point to be drawn, the cross drawing tool is clicked, and the mobile terminal creates a node at the position.
The way of the sit plotting point to create the starting node is as follows: a user selects a manual input point coordinate or an import coordinate; if the input coordinate is selected, the user inputs a coordinate point; if the import coordinate is selected, the appointed coordinate file is imported.
The step S30) is performed as follows:
when the step S30) is executed, if the user 'S finger is not lifted after clicking, executing step S302) to save the currently drawn node, and executing step S306) to render the current screen data after the user' S finger is lifted;
if the user' S finger is lifted up immediately after clicking, executing step S304) to draw a node at the finger click position;
s302) saving the drawn nodes;
s304) drawing a node at the point where the finger clicks;
s306) rendering the current screen data after the finger is lifted.
The step S50) is performed as follows:
executing step S50), if the user has another finger to press the screen, executing step S502) to lift another finger and draw a single node; otherwise, executing step S504) to slide the finger and draw continuous nodes on the screen;
s502) lifting the other finger to draw a single node;
s504) sliding the finger draws successive nodes.
The revocation node or the recovery node in S60) is: if the user has a deviation in the current node drawing position in the process of drawing the geometric object node, clicking to cancel the currently drawn node; and if the user inaccurately cancels the node, clicking to recover the cancelled node.
The single-point capture or continuous node capture is that a user captures the existing geometric figure nodes to rapidly draw the nodes in the process of drawing the geometric figure nodes, and the user selects the single-point capture or continuous node capture after selecting the geometric objects as capture nodes;
the reverse delineation is as follows: when the user sketches the current point from the starting point, if the user needs to sketch the current point from the starting point, the user can click the reverse sketching tool at the moment; the current point is changed into the starting point, the original starting point is changed into the current point, and the user continues to draw from the current node;
the buffering surface is formed by drawing a line through GPS sampling points or continuous sampling points, clicking the buffering surface, opening a buffering surface forming window, setting a buffering mode and a buffering distance, clicking a buffering effect on a screen after previewing, and finally clicking to finish generating the buffering surface.
Compared with the prior art, the invention has the beneficial effects that:
the invention makes the data acquisition process of the mobile terminal more flexible and efficient, and various drawing modes included in the acquisition method can be switched at will in the data acquisition process; because the acquired information is rendered simultaneously in the acquisition process, the user is left with sufficient time to select the drawing of the next graph node, and the generation of wrong geometric objects due to insufficient time in the node drawing process of the user is avoided. The user can freely switch between single-point drawing and continuous drawing, and the efficiency of the user in data acquisition can be greatly improved; due to the fact that requirements of different conditions are considered, special functions of a magnifying glass, reverse drawing, node capturing, surface buffering and the like are added, and a user can conveniently and quickly acquire data in the data acquisition process.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a block flow diagram of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a GIS data collection method includes drawing a graph of a geometric object, and data collection when drawing the graph of the geometric object includes the following steps:
s10) creating a start node
After a user clicks a drawing tool through a finger to select a function of drawing a geometric object, the user lifts the finger to click the position of a drawing starting point and releases the function, the mobile terminal creates a starting node on a screen, and after a schematic ring representing the node range is displayed outside the node, the user clicks the screen again through the finger;
s20) judging whether the re-clicking position of the finger of the user is within the range of the schematic circle or not
If the finger click position of the user is not within the range of the schematic circle, executing the step S30;
if the finger click position of the user is within the range of the schematic circle, executing step S40;
s30) judging whether the finger of the user is immediately lifted up after clicking again
If the user finger is not lifted after clicking, storing the current drawn node until the user finger is lifted to render the current screen data;
if the user' S finger is lifted up immediately after clicking, drawing a node at the finger click position, and executing step S60 after finishing drawing the node;
s40) pressing down by the finger of the user within the range of the schematic circle
Pressing down the finger of the user within the current schematic circle range, and then, generating a magnifier for magnifying and drawing the initial node process at the upper left corner of the screen of the mobile terminal; observing the position of the current node by using a magnifying glass while sliding the finger and executing step S50);
s50) determining whether the user has another finger pressed on the screen
If the user operates with a single finger, sliding the finger to draw continuous nodes;
if the user presses the screen by two fingers, lifting the fingers to draw a single node or continuous nodes;
s60) using an auxiliary tool
When continuous nodes or single nodes are drawn, the following auxiliary tools are adopted for drawing:
if the errors occur in the nodes for drawing the geometric objects, the auxiliary tools are utilized to withdraw the nodes or recover the nodes,
if the existing geometric figure nodes exist, single-point capturing or continuous capturing is adopted;
if a forest belt, a road surface or a river surface with fixed width exists, reverse drawing or buffering surface forming treatment is adopted during drawing;
s70) generating geometric objects
After the user finishes the drawing of the geometric object node, clicking and finishing, and generating a geometric object by the mobile terminal according to the drawn node;
s80) for highlighting
After the drawn geometric object is completed, the mobile terminal highlights the geometric object.
Further: the S10) the mobile terminal creates the start node on the screen in one or more of the following manners: GPS sampling points, continuous sampling points, cross plotting points, or coordinate plotting points.
Specifically, the mode for creating the start node by the GPS sampling point is as follows: and clicking the screen by a user finger, clicking a GPS acquisition point by the finger after starting the GPS service of the mobile terminal, and drawing a node in the screen by the mobile terminal according to the current GPS positioning coordinate.
The mode of establishing the starting node by the continuous sampling point is as follows: setting a sampling mode and a sampling rate of continuous sampling points according to the distance length or time interval; after the user clicks continuous sampling by fingers, the mobile terminal records the user movement track acquisition graph nodes according to the set sampling mode and sampling rate, and draws the graph nodes on a screen.
The method for creating the starting node by the cross-shaped drawing point comprises the following steps: after a user clicks the drawing tool with a finger, the cross hair is displayed in the center of the screen of the mobile terminal, the user slides the screen with the finger to enable the cross hair to be overlapped with the position of the boundary point to be drawn, the cross drawing tool is clicked, and the mobile terminal creates a node at the position.
The way of the sit plotting point to create the starting node is as follows: a user selects a manual input point coordinate or an import coordinate; if the input coordinate is selected, the user inputs a coordinate point; if the import coordinate is selected, the appointed coordinate file is imported.
The single-point capture or continuous node capture is that a user captures the existing geometric figure nodes to rapidly draw the nodes in the process of drawing the geometric figure nodes, and the user selects the single-point capture or continuous node capture after selecting the geometric objects as capture nodes;
the reverse delineation is as follows: when the user sketches the current point from the starting point, if the user needs to sketch the current point from the starting point, the user can click the reverse sketching tool at the moment; the current point is changed into the starting point, the original starting point is changed into the current point, and the user continues to draw from the current node;
the buffering surface is formed by drawing a line through GPS sampling points or continuous sampling points, clicking the buffering surface, opening a buffering surface forming window, setting a buffering mode and a buffering distance, clicking a buffering effect on a screen after previewing, and finally clicking to finish generating the buffering surface.
Data acquisition in rendering geometry is performed according to the following steps:
step S10 creates a start node:
after a user selects a function of drawing a geometric object, clicking and releasing a position of a starting point to be drawn by a finger, drawing a starting node on a screen by the mobile terminal, and after a red indicating ring of a node range is displayed outside the starting node, clicking the screen again by the finger; the starting node is created by one or more of a GPS sampling point, a continuous sampling point, a cross plot point, or a coordinate plot point.
The GPS sampling point drawing starting node mode is as follows: clicking a screen by a user finger, clicking a GPS acquisition point by the finger after starting a GPS service of the mobile terminal, and drawing a node in the screen by the mobile terminal according to the current GPS positioning coordinate;
the method for drawing the starting node by the continuous sampling points comprises the following steps: setting a sampling mode and a sampling rate of continuous sampling points according to the distance length or time interval; after clicking continuous sampling by a user finger, recording a user moving track acquisition graph node according to a set sampling mode and a set sampling rate, and drawing the graph node on a screen;
the method for drawing the starting node by the cross drawing point is as follows: after a user clicks a drawing tool with a finger, a cross hair is displayed in the center of a screen of the mobile terminal, the user moves the screen through the finger to enable the cross hair to be overlapped with the position of a boundary point to be drawn, the user clicks the cross drawing tool, and the mobile terminal draws a node at the position;
the method for drawing the initial node by the coordinate plotting points is as follows: the user selects a manual input point coordinate or an import coordinate; if the input coordinate is selected, the user inputs a coordinate point or inputs an azimuth angle and a distance with the previous node; if the import coordinate is selected, an appointed coordinate file is imported, wherein the appointed coordinate file is a coordinate file prepared in advance.
Specific examples are given below.
Referring to fig. 1, the data acquisition when rendering a graphic of a geometric object comprises the steps of:
step S10 creates a start node
After a user clicks a drawing tool through a finger to select a function of drawing a geometric object, the user lifts the finger to click the position of a drawing starting point and releases the function, the mobile terminal creates a starting node on a screen, and after a schematic ring representing the node range is displayed outside the node, the user clicks the screen again through the finger;
step S20 judges whether the re-click position of the user finger is within the node range or not
If the finger click position of the user is within the range of the red indicating circle, executing the step S40; if the user' S finger click position is not within the red circle, the process proceeds to step S30 where the finger click is immediately released.
Step S30 determines whether the user' S finger is immediately lifted up after clicking again.
If the user 'S finger is not lifted after clicking, step S302 is executed to store the currently drawn node until the user' S finger is lifted, and step S306 is executed to render the current screen data. If the user' S finger is lifted immediately after clicking, step S304 is executed to draw a node at the finger click. By adopting the judging mode, the user can move, zoom and other operations on the current screen display at any time in the data acquisition process, and the data rendering and the data acquisition can be freely converted. The user does not need to worry about the method automatically generating wrong geometric figures due to over-slow operation or insufficient time in the process of drawing the geometric object nodes.
Step S40 finger press within node range
The user's finger presses down in the current node scope, and a magnifying glass appears in the screen in the upper left corner this moment. By adopting the magnifying glass tool, the user can draw the nodes more finely and conveniently.
Step S50 judges whether or not there is another finger-held screen
If the user performs the operation with a single finger, step S504 is executed to draw the continuous nodes, and the user slides the finger to draw the continuous nodes on the screen; if the user presses the screen with two fingers, step S502 is executed to draw a single node. The user can slide and press the finger of the current node to a designated position in combination with the magnifying glass, then the other finger is released, and the mobile terminal can draw a node at the current position. By adopting the judging mode, the user can freely switch between single-node drawing and continuous-node drawing, so that the data acquisition efficiency is greatly improved.
Step S60 is performed by using an auxiliary tool for node revocation or node restoration, single-point capture or continuous capture, reverse delineation or surface buffering;
for different requirements, the user can select an auxiliary tool to rapidly draw the geometric object node. Instead of executing the assistant tool of step S60, the process goes to step S20 to continue drawing the geometric object node.
Node revocation and node recovery: if the position of the current node is not ideal when the user draws the geometric object node, the user can click to cancel the current drawn node; if the user incorrectly revokes a node, the node that was recovered for revocation may be clicked on.
Single point capture or continuous capture: the user can quickly draw the nodes by capturing the existing geometric figure nodes in the process of drawing the geometric figure nodes, and the user can select the geometric objects needing to capture the nodes and then select single-point capture or continuous node capture.
Reverse drawing: flexibility in the graph node delineation process. When the user sketches the current point from the starting point, the user may want to sketch from the starting point again, at this time, the user can click the reverse sketching tool, the current point becomes the starting point, the starting point becomes the current point, and the user can continue to sketch from the current point.
Buffering to form noodles: when a forest belt, a road surface or a river surface with fixed width is drawn, a line can be drawn through a GPS sampling point, a continuous sampling point or a picture, then a buffer forming surface is clicked, a buffer forming surface window body is opened, a buffer mode and a buffer distance are set, then the buffer effect can be seen through click preview, and finally a buffer surface can be generated after click completion.
Step S70 generates a geometric object. And after the user finishes the drawing of the geometric object node, clicking to finish, and generating the geometric object according to the drawn node. By adopting the completion determination mode, the user can autonomously determine when the geometric object is drawn, and the generation of wrong geometric objects is avoided.
Step S80 is highlighted. After the rendered geometric object is generated, the method highlights it. In this way, the user can clearly see the geometric object just drawn.
The invention makes the data acquisition process of the mobile terminal more flexible and efficient, and various drawing modes included in the acquisition method can be switched at will in the data acquisition process; due to the fact that the acquisition method and the rendering method are controlled simultaneously, a user can render results in the process of drawing the geometric object nodes when data are acquired. Sufficient time can be left for the user to select the drawing of the next graph node, so that the generation of wrong geometric objects due to insufficient time in the node drawing process of the user is avoided; due to the adoption of a mode of flexibly switching and using a plurality of data acquisition tools. The user can freely switch between single-point drawing and continuous drawing, and the efficiency of the user in data acquisition can be greatly improved; due to the fact that requirements of different conditions are considered, special functions of a magnifying glass, reverse drawing, node capturing, surface buffering and the like are added, and a user can conveniently and quickly acquire data in the data acquisition process.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. A GIS data acquisition method comprises the graphic drawing of geometric objects, and is characterized in that: the data acquisition when drawing the graph of the geometric object comprises the following steps:
s10) creates a start node:
after a user clicks a drawing tool through a finger to select a function of drawing a geometric object, the user lifts the finger to click the position of a drawing starting point and releases the function, the mobile terminal creates a starting node on a screen, and after a schematic ring representing the node range is displayed outside the starting node, the user clicks the screen again through the finger;
s20) judging whether the user' S finger re-click position is within the range of the gesture circle:
if the finger click position of the user is not within the range of the schematic circle, executing the step S30;
if the finger click position of the user is within the range of the schematic circle, executing step S40;
s30) judging whether the user' S finger is immediately lifted up after clicking again:
if the user finger is not lifted after clicking, storing the currently drawn node until the user finger is lifted to render the current screen data, and finishing data acquisition;
if the user' S finger is lifted up immediately after clicking, drawing a single node at the finger click position, and executing step S60 after finishing drawing the node;
s40) the user' S finger presses down within the gesture circle:
pressing down the finger of the user within the current schematic circle range, and then, generating a magnifier for magnifying and drawing the initial node process at the upper left corner of the screen of the mobile terminal; observing the position of the current node by using a magnifying glass while sliding the finger and executing step S50);
s50) determining whether the user has another finger to hold the screen:
if the user is operated by a single finger, sliding the finger to draw continuous nodes, and executing step S60);
if the user presses the screen with two fingers, lifting the fingers to draw a single node or continuous nodes, and executing step S60);
s60) using an auxiliary tool:
when continuous nodes or single nodes are drawn, the following auxiliary tools are adopted for drawing:
if errors occur in the nodes for drawing the geometric objects, utilizing an auxiliary tool to cancel or restore the nodes;
if the existing geometric figure nodes exist, single-point capturing or continuous capturing is adopted;
if a forest belt, a road surface or a river surface with fixed width exists, reverse drawing or buffering surface forming treatment is adopted during drawing;
s70) generating a geometric object:
after the user finishes the drawing of the geometric object node, clicking and finishing, and generating a geometric object by the mobile terminal according to the drawn node;
s80) highlight:
after the drawn geometric object is completed, the mobile terminal highlights the geometric object.
2. The GIS data collection method of claim 1, wherein: the S10) the mobile terminal creates the start node on the screen in one or more of the following manners: GPS sampling points, continuous sampling points, cross plotting points, or coordinate plotting points.
3. The GIS data collection method of claim 2, wherein: the mode of the GPS sampling point establishing starting node is as follows: and clicking the screen by a user finger, clicking a GPS acquisition point by the finger after starting the GPS service of the mobile terminal, and drawing a node in the screen by the mobile terminal according to the current GPS positioning coordinate.
4. The GIS data collection method of claim 2, wherein: the mode of establishing the starting node by the continuous sampling point is as follows: setting a sampling mode and a sampling rate of continuous sampling points according to the distance length or time interval; after the user clicks continuous sampling by fingers, the mobile terminal records the user movement track acquisition graph nodes according to the set sampling mode and sampling rate, and draws the graph nodes on a screen.
5. The GIS data collection method of claim 2, wherein: the method for creating the starting node by the cross-shaped drawing point comprises the following steps: after a user clicks the drawing tool with a finger, the cross hair is displayed in the center of the screen of the mobile terminal, the user slides the screen with the finger to enable the cross hair to be overlapped with the position of the boundary point to be drawn, the cross drawing tool is clicked, and the mobile terminal creates a node at the position.
6. The GIS data collection method of claim 2, wherein: the way of the sit plotting point to create the starting node is as follows: a user selects a manual input point coordinate or an import coordinate; if the input coordinate is selected, the user inputs a coordinate point; if the import coordinate is selected, the appointed coordinate file is imported.
7. The GIS data collection method of claim 1, wherein: the revocation node or the recovery node in S60) is: if the user has a deviation in the current node drawing position in the process of drawing the geometric object node, clicking to cancel the currently drawn node; and if the user inaccurately cancels the node, clicking to recover the cancelled node.
8. The GIS data collection method of claim 1, wherein: the single-point capture or continuous node capture is that a user captures the existing geometric figure nodes to rapidly draw the nodes in the process of drawing the geometric figure nodes, and the user selects the single-point capture or continuous node capture after selecting the geometric objects as capture nodes;
the reverse delineation is as follows: when the user sketches the current point from the starting point, if the user needs to sketch the current point from the starting point, the user can click the reverse sketching tool at the moment; the current point is changed into the starting point, the original starting point is changed into the current point, and the user continues to draw from the current node;
the buffering surface is formed by drawing a line through GPS sampling points or continuous sampling points, clicking the buffering surface, opening a buffering surface forming window, setting a buffering mode and a buffering distance, clicking a buffering effect on a screen after previewing, and finally clicking to finish generating the buffering surface.
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| CN105045815A (en) * | 2015-06-25 | 2015-11-11 | 湖南大麓管道工程有限公司 | Data collecting method and apparatus |
| CN105608108A (en) * | 2015-11-13 | 2016-05-25 | 北京超图软件股份有限公司 | Universal GIS data collaborative collection method and apparatus as well as server |
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| CN101166327A (en) * | 2006-03-31 | 2008-04-23 | 捷讯研究有限公司 | Methods and apparatus for dynamically labeling map objects in visually displayed maps |
| CN104571817A (en) * | 2014-12-23 | 2015-04-29 | 北京超图软件股份有限公司 | Method and device for data collection of mobile GIS (Geographic Information System) platform |
| CN106409129A (en) * | 2016-11-29 | 2017-02-15 | 北京掌行通信息技术有限公司 | Road condition drawing method and road condition drawing device |
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