CN115375795A - Rapid plotting method for flood frequency analysis - Google Patents

Rapid plotting method for flood frequency analysis Download PDF

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Publication number
CN115375795A
CN115375795A CN202210989321.3A CN202210989321A CN115375795A CN 115375795 A CN115375795 A CN 115375795A CN 202210989321 A CN202210989321 A CN 202210989321A CN 115375795 A CN115375795 A CN 115375795A
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China
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river
range
annotation
basin
layer
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CN202210989321.3A
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Inventor
梁建
庞牧华
路伟亭
张志强
窦艳飞
赵伟
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Anhui & Huaihe River Institute Of Hydraulic Research (anhui Water Conservancy Project Quality Inspection Center Station)
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Anhui & Huaihe River Institute Of Hydraulic Research (anhui Water Conservancy Project Quality Inspection Center Station)
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Priority to CN202210989321.3A priority Critical patent/CN115375795A/en
Publication of CN115375795A publication Critical patent/CN115375795A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/20—Drawing from basic elements, e.g. lines or circles
    • G06T11/206—Drawing of charts or graphs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06311—Scheduling, planning or task assignment for a person or group
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/40—Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping

Abstract

The invention discloses a fast plotting method for flood frequency analysis, which comprises the following steps: rapidly merging rivers in a river basin range to be analyzed, wherein the river original data in the analysis range adopt small river basins divided by a DEM (digital elevation model) diagram, and the small river basins are merged into the river basin range to be analyzed; highlighting the watershed range, highlighting the graph in the watershed range selection surface, and slightly darkening the watershed range to form a contrast to highlight the content in the watershed range; fast splitting and arranging the lettering of the river in the river basin range, setting all the lettering fonts of the river in the river basin range to the north side of the map direction, and displaying the lettering fonts in a distributed manner along the river trend; when the plurality of files are drawn, the patterns are quickly matched, when the plurality of files are drawn, each river is in a single folder, and in the drawing process, when the linear and character patterns are modified, after the format of the first river is modified, the patterns of other drawings can be automatically matched.

Description

Rapid plotting method for flood frequency analysis
Technical Field
The invention relates to the technical field of flood frequency analysis in the water conservancy industry, in particular to a fast plotting method for flood frequency analysis.
Background
The development of flood and drought disaster comprehensive risk general survey work is an important national situation and national force survey, the work is basic work for improving natural disaster prevention and control, and the flood and drought disaster content of the natural disaster comprehensive risk general survey mainly comprises the following steps: analyzing the flood frequency in the hilly area, and drawing a flood frequency graph; and (5) compiling a flood inundation map of a small river in the hilly area. In a medium-small river with the river basin area of 200-3000 km2 (mainly a river reach with over 200km2 and protected objects such as residential areas, farmlands and the like along the river), small river basins are taken as units, hydrologic partitions are reasonably divided and adjusted according to the regional distribution rule of rainstorm flood and underlying surface conditions, the production convergence parameters of each hydrologic partition are determined, flood frequency analysis is carried out (when flow data are lacked, the small river basin design flood is calculated by combining rainstorm frequency analysis results, proper flood results are selected, a flood frequency graph (flood frequency graphs once inundation in 5 years, 10 years, 20 years, 30 years, 50 years, 100 years, 200 years and 500 years) is drawn, the flood frequency graph and the flood frequency graph are drawn based on GIS software (ARCGIS, MAGIS and the like), the workload is huge, rapid graph cannot be drawn after the flood analysis, and result display is carried out.
Disclosure of Invention
The method aims to solve the problem that the flood cannot be rapidly mapped after analysis and result display is carried out; the invention aims to provide a fast graph plotting method for flood frequency analysis.
In order to solve the technical problems, the invention adopts the following technical scheme that the rapid plotting method for flood frequency analysis comprises the following steps:
s1, rapidly merging rivers in a river basin range to be analyzed, wherein the river original data in the analysis range adopt small river basins divided by a DEM (digital elevation model) diagram, and the small river basins are merged into the river basin range to be analyzed;
s2, highlighting the watershed range, highlighting the graph in the watershed range selection surface, and forming a contrast by slightly darkening the watershed range to highlight the content in the watershed range;
s3, rapidly splitting and arranging the lettering of the river in the river basin range, setting all the lettering heads of the lettering Chinese culture of the river in the river basin range to the north side of the map direction, and displaying the lettering fonts in a distributed manner along the trend of the river;
and S4, patterns are quickly matched when a plurality of files are drawn, each river is in a single folder during drawing, and in the drawing process, when linear and character patterns are modified, the patterns of other drawings can be automatically matched after the format of the first river is modified.
In a preferred embodiment, in step S1, before the small watersheds are merged into the watersheds to be analyzed, a merged small watershed list is input, a face corresponding to a river to be merged is determined, and all names of the list can be searched in the name attribute name of the river.
In a preferred embodiment, in step S1, the analyzed watershed is divided into multiple levels of rivers, including a main river, a secondary river, and a tertiary river … … n level river, the layers to be processed are watershed surface layers and water system axial line layers, which are in one-to-one correspondence, and the layer attribute data includes a next river attribute in the attribute table of the line layer and does not include the surface layer.
In an optimized implementation case, river basins with the same level of attributes in the same analysis river basin are merged during merging, an input river list is the river basin needing to be merged, and the river basins are searched one by one in the 'ennm' attributes and are unique; the 'next river' attributes are combined river basins, a plurality of 'next river' attributes are provided, whether the 'enrm' attributes exist or not needs to be searched one by one, and if the 'next river' attributes exist, the combination needs to be repeated once.
In a preferred embodiment, the space search is used for searching all the surfaces intersected with the line, then the surface merging process with the same name as the line is searched in the space search, each river can be displayed globally, the operator identifies and confirms the merging result, and the merging step is completed after the identification and confirmation.
In a preferred embodiment, in step S2, the highlighting method includes: selecting a surface element, then obtaining a circumscribed rectangle, then copying a new layer, cutting the circumscribed rectangle, using the obtained surface selection set as a buffer area, expanding the selection surface by the buffer area, using the circumscribed rectangle to cut the selection surface with the current selection surface, and highlighting the polarity of the cut surface.
In a preferred embodiment, in step S3, a annotation layer to be processed is selected, then each annotation on the layer is traversed to obtain the text content of the annotation, a character is sequentially disassembled, the position coordinates of each character are obtained through the annotation, a new annotation object is respectively created for each character, the disassembled character and coordinates are assigned to the object, and the previous annotations that are connected together are deleted to modify the annotation font.
According to an optimized implementation case, when a new annotation object is created, the character body rotation attribute is set, characters are rotated in the splitting process, the character heads face north, the text contents are connected together, two control points are arranged in the annotation object, one control point is arranged on the left side and one control point is arranged on the right side, when the annotation is distributed according to the river trend, the characters are not connected in a plane, at the moment, each character corresponds to two control points, each annotation is marked as a whole after the annotation is transferred, and operations such as editing or position moving cannot be performed on each character.
In a preferred embodiment, in step S4, each river is in a separate folder, a separate mxd file is provided, the format of the graph drawing pattern is stored in a mxd template, and in the graph drawing process, when the patterns such as line shapes and characters are modified, the graph drawing patterns of other graphs are automatically matched after the first river, namely the first mxd file format, is modified;
all data are stored in a folder, wherein layers of the basic data folder are shared, other data are independent data of each river, the layers in each river are completely consistent and have the same format, and only the display ranges are different;
each element layer has a rendering type rendering, including color and symbol, the template file is opened firstly, all layer rendering types are traversed, the files needing to be modified are identified and recorded, assignment setting is carried out according to the layer rendering types, line types and color parameters of all layers are automatically matched according to template patterns, and automatic matching of other graph-layer graph formats is realized.
In a preferred embodiment, during plotting, the rainfall histogram and the water level process chart are generated according to the forecast rainfall and water level process data for each graded river parameter in the diagram of the analysis watershed, and then the combined and displayed diagram river channel of the analysis watershed can meet the river watershed combination requirement and meet the flood frequency analysis.
Compared with the prior art, the invention has the beneficial effects that:
the river in the river basin range to be analyzed is quickly merged, the river original data in the analysis range adopts small river basins divided by a DEM (digital elevation model) diagram, the small river basins are merged into the river basin range to be analyzed, the river basin range is highlighted, the annotation fonts of the river in the river basin range are quickly split and arranged, the annotation fonts of the river in the river basin range are Chinese-cultural, all the fonts face to the north side of the map direction, the annotation fonts are distributed and displayed along the river trend, the patterns are quickly matched when multiple files are plotted, when the images are plotted, each river is in a single folder, and in the process of plotting, when the line shapes and the character patterns are modified, after the first river format is modified, the other image formats can be automatically matched, so that the analysis result image is quickly and normally displayed, the work efficiency of analyzing the water frequency, the repetitive work load is reduced, and the manual work load is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the process of the present invention.
Fig. 2 is a schematic view of the river course merging in the basin range according to the present invention.
FIG. 3 is a schematic diagram of distribution before domain merging according to the present invention.
FIG. 4 is a distribution diagram of the basin ranges after merging according to the present invention.
FIG. 5 is a schematic diagram of distribution before the watershed range is highlighted according to the present invention.
FIG. 6 is a schematic view of the distribution of the watershed range of the present invention after highlighting.
FIG. 7 is a diagram illustrating distribution of the split-reset pre-annotation fonts according to the invention.
FIG. 8 is a schematic diagram of the distribution of the split and reset annotated fonts according to the present invention.
FIG. 9 is a schematic diagram of the distribution of multiple graphs before automatic matching according to the present invention.
FIG. 10 is a distribution diagram of the multi-graph after automatic matching according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1-10, the present invention provides a fast graph plotting method for flood frequency analysis, which comprises the following steps:
s1, rapidly merging rivers in a river basin range to be analyzed, wherein the river original data in the analysis range adopt small river basins divided by a DEM (digital elevation model) diagram, and the small river basins are merged into the river basin range to be analyzed;
s2, highlighting the watershed range, highlighting the graph in the watershed range selection surface, and forming a contrast by slightly darkening the watershed range to highlight the content in the watershed range;
s3, rapidly splitting and arranging the lettering of the river in the river basin range, setting all the lettering heads of the lettering Chinese culture of the river in the river basin range to the north side of the map direction, and displaying the lettering fonts in a distributed manner along the trend of the river;
and S4, rapidly matching the patterns when the plurality of files are drawn, wherein each river is in a single folder during drawing, and the patterns of other drawings can be automatically matched after the format of the first river is modified during the drawing process when the linear and character patterns are modified.
Further, in step S1, before merging the small watersheds into the watersheds to be analyzed, the merged small watersheds list is input, the face corresponding to the river to be merged and all names of the list are determined, and the names can be searched in the attribute name of the river.
Further, in step S1, the watershed being analyzed is divided into multiple levels of rivers, including a main river, a secondary river, and a tertiary river … … n level river, the layers to be processed are a watershed area layer and a water system axis line layer, which are in one-to-one correspondence, and in the layer attribute data, the next level of river attribute exists in the attribute table of the line layer, and the surface layer does not exist.
Furthermore, during merging, merging river basins with the same level of attributes in the same analysis river basin, wherein the input river list is the river basins needing to be merged, and the river basins are searched for the 'ennm' attributes one by one and are unique; the 'next river' attributes are combined river basins, a plurality of 'next river' attributes are provided, whether the 'enrm' attributes exist or not needs to be searched one by one, and if the 'next river' attributes exist, the combination needs to be repeated once.
Further, the space search is utilized to search all the surfaces intersected with the line, then the surface merging process with the same name as the line is searched in the space search, each river can be displayed globally, the operator identifies and confirms the merging result, and the merging step is completed after the confirmation.
Further, in step S2, the highlighting method includes: selecting a surface element, then obtaining a circumscribed rectangle, then copying a new layer, cutting the circumscribed rectangle, using the obtained surface selection set as a buffer area, expanding the selection surface by the buffer area, using the circumscribed rectangle to cut the selection surface with the current selection surface, and highlighting the polarity of the cut surface.
Further, in step S3, a to-be-processed annotation layer is selected, then each annotation on the layer is traversed to obtain the text content of the annotation, a character is sequentially disassembled, the position coordinate of each character is obtained through the annotation, a new annotation object is respectively created for each character, the disassembled character and the coordinate are assigned to the object, and the previous annotations that are connected together are deleted to modify the annotation font.
Furthermore, when a new annotation object is created, the font rotation attribute is set, characters are rotated in the splitting process, the character heads face north, the text contents are connected together, two control points are arranged in the annotation object, one control point is arranged on the left side and one control point is arranged on the right side, when the annotation is distributed according to the trend of a river, the characters are not connected in a plane, at the moment, each character corresponds to two control points, each annotation is recorded as a whole after the annotation transfer, and operations such as editing or position moving cannot be performed on each character.
Further, in the step S4, each river is in an independent folder, an independent mxd file is provided, the format of the graph drawing pattern is stored in a mxd template, and in the graph drawing process, when the patterns such as line shapes, characters and the like are modified, the graph drawing formats of other graphs are automatically matched after the first river, namely the first mxd file format, is modified;
all data are stored in a folder, wherein layers of the basic data folder are shared, other data are independent data of each river, the layers in each river are completely consistent and have the same format, and only the display ranges are different, and the format of each layer is set in a template picture, wherein the format comprises the color and the thickness of a line, the color parameters of a surface, the size and the color of characters and the range of marks;
each element layer has a rendering type rendering, including color and symbol, the template file is opened firstly, all layer rendering types are traversed, the files needing to be modified are identified and recorded, assignment setting is carried out according to the layer rendering types, line types and color parameters of all layers are automatically matched according to template patterns, and automatic matching of other graph-layer graph formats is realized.
Furthermore, during plotting, the rainfall histogram and the water level process chart are generated according to the forecast rainfall and water level process data by the hierarchical river parameters in the diagram of the analysis basin, and then the river channels of the diagram of the analysis basin, which are displayed in a combined mode, can meet the combination requirement of the river basin and meet the flood frequency analysis.
The working principle is as follows: the river in the river basin range to be analyzed is quickly merged, the river original data in the analysis range adopts small river basins divided by a DEM (digital elevation model) diagram, the small river basins are merged into the river basin range to be analyzed, the river basin range is highlighted, the annotation fonts of the river in the river basin range are quickly split and arranged, the annotation fonts of the river in the river basin range are Chinese-cultural, all the fonts face to the north side of the map direction, the annotation fonts are distributed and displayed along the river trend, the patterns are quickly matched when multiple files are plotted, when the images are plotted, each river is in a single folder, and in the process of plotting, when the line shapes and the character patterns are modified, after the first river format is modified, the other image formats can be automatically matched, so that the analysis result image is quickly and normally displayed, the work efficiency of analyzing the water frequency, the repetitive work load is reduced, and the manual work load is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A fast graph plotting method for flood frequency analysis is characterized by comprising the following steps:
s1, rapidly merging rivers in a river basin range to be analyzed, wherein the river original data in the analysis range adopt small river basins divided by a DEM (digital elevation model) diagram, and the small river basins are merged into the river basin range to be analyzed;
s2, highlighting the watershed range, highlighting the graph in the watershed range selection surface, and forming a contrast by slightly darkening the watershed range to highlight the content in the watershed range;
s3, rapidly splitting and arranging the lettering of the river in the river basin range, setting all the lettering heads of the lettering Chinese culture of the river in the river basin range to the north side of the map direction, and displaying the lettering fonts in a distributed manner along the trend of the river;
and S4, patterns are quickly matched when a plurality of files are drawn, each river is in a single folder during drawing, and in the drawing process, when linear and character patterns are modified, the patterns of other drawings can be automatically matched after the format of the first river is modified.
2. The fast mapping method for flood frequency analysis according to claim 1, wherein in step S1, before the small watersheds are merged into the watersheds to be analyzed, a merged list of the small watersheds is inputted, a face corresponding to a river to be merged is determined, all names of the list are searched in the attribute name of the river name.
3. The fast mapping method for flood frequency analysis according to claim 1, wherein in step S1, the basin to be analyzed is divided into multiple levels of rivers, including main river, secondary river, and tertiary river … … n level rivers, the layers to be processed are basin range surface layers and water system axis line layers, which are in one-to-one correspondence, and in the layer attribute data, the next level of river attribute exists in the attribute table of the line layer, and the surface layer does not exist.
4. The fast mapping method for flood frequency analysis according to claim 3, wherein during merging, river basins with the same level of attributes in the same analysis river basin are merged, and the inputted river list is the river basin to be merged, and is searched one by one in the 'enrm' attribute and is unique; the 'next river' attributes are combined river basins, a plurality of 'next river' attributes are provided, whether the 'enrm' attributes exist or not needs to be searched one by one, and if the 'next river' attributes exist, the combination needs to be repeated once.
5. The method as claimed in claim 4, wherein the merging step is completed after the merging result is identified and confirmed by the operator, and the entire river can be displayed globally by searching all the surfaces intersecting the line through the space search and then searching the merging process of the surfaces with the same name as the line.
6. The fast graph plotting method for flood frequency analysis according to claim 1, wherein in step S2, the highlighting method is: selecting a surface element, then obtaining a connecting external rectangle, then copying a new layer, cutting by using the external rectangle, using the obtained surface selection set as a buffer area, expanding the selection surface by using the buffer area, using the external rectangle to cut with the current selection surface, and highlighting the polarity of the cut surface.
7. The method as claimed in claim 1, wherein in step S3, a annotation layer to be processed is selected, and then each annotation on the layer is traversed to obtain the text content of the annotation, a character is broken down in sequence, the position coordinates of each character are obtained through the annotation, a new annotation object is created for each character, the broken character and coordinates are assigned to the object, and the previous annotations that are connected together are deleted to modify the annotation font.
8. The fast graph plotting method for flood frequency analysis as claimed in claim 7, wherein when a new annotation object is created, the font rotation attribute is set, the characters are rotated during the splitting process, so that the character heads face north, the text contents are connected, the annotation object has two control points, one on the left and one on the right, when the annotation is distributed according to the river trend, the characters are not connected in the plane, at this time, each character corresponds to two control points, after the annotation, each annotation is marked as a whole, and the editing or position moving operation cannot be performed on each character.
9. The fast graph plotting method for flood frequency analysis according to claim 1, wherein in step S4, each river has an individual mxd file in an individual folder, the graph plotting format is stored in a mxd template, and in the graph plotting process, when the styles such as line shape and text are modified, after the format of the first river, namely the first mxd file, is modified, the graph plotting formats of other graphs are automatically matched;
all data are stored in a folder, wherein layers of the basic data folder are shared, other data are independent data of each river, the layers in each river are completely consistent and have the same format, and only the display ranges are different;
each element layer has a rendering type rendering, including color and symbol, the template file is opened firstly, all layer rendering types are traversed, the files needing to be modified are identified and recorded, assignment setting is carried out according to the layer rendering types, line types and color parameters of all layers are automatically matched according to template patterns, and automatic matching of other graph-layer graph formats is realized.
10. The method as claimed in claim 1, wherein during plotting, the rainfall histogram and the water level process chart are generated from each hierarchical river parameter in the diagram of the analysis basin according to the forecast rainfall and water level process data, and then the merged and displayed diagram river channels of the analysis basin can meet the merging requirement of the river basin and the flood frequency analysis.
CN202210989321.3A 2022-08-17 2022-08-17 Rapid plotting method for flood frequency analysis Pending CN115375795A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116342738A (en) * 2023-01-31 2023-06-27 重庆市地理信息和遥感应用中心(重庆市测绘产品质量检验测试中心) Automatic extraction and graphic display manufacturing method of forbidden vector range based on GIS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116342738A (en) * 2023-01-31 2023-06-27 重庆市地理信息和遥感应用中心(重庆市测绘产品质量检验测试中心) Automatic extraction and graphic display manufacturing method of forbidden vector range based on GIS
CN116342738B (en) * 2023-01-31 2023-08-29 重庆市地理信息和遥感应用中心(重庆市测绘产品质量检验测试中心) Automatic extraction and graphic display manufacturing method of forbidden vector range based on GIS

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