IGGCAS OpenIR  > 地球与行星物理院重点实验室
Merging plot of massive earthquake catalogs using the minimum number of active records
Wang, Shuqin1; Zhang, Jinhai2
2022-03-26
Source PublicationEARTH SCIENCE INFORMATICS
ISSN1865-0473
Pages7
AbstractGenerating and editing vector graphics of earthquake catalogs are time consuming when the volume of catalogs is huge; however, most symbols of earthquakes are actually covered by others thus are not visible. We need to condense the catalogs to a limited number by disregarding those invisible symbols to simplify the process. In this paper, we only select the superficial portrait of the whole data volume by ignoring all invisible records. In numerical implementation, we mark one record as active if at least one of its pixels in the virtual bitmap is visible, after judging the superposition relationship between this record and all previous active records; otherwise, we mark this record as inactive and remove it from the catalogs. This approach does not degrade the quality of the final vector graphics, since it can completely separate active records from inactive ones. It can greatly suppress the final size of vector graphics file and significantly reduce the time consumption of drawing, editing, and displaying vector graphics, since the number of active records was condensed to a minimum. In an example of 410,642 earthquake catalogs, only 2577 records (similar to 0.63% the whole catalog) were finally selected as the candidates to be plotted. The run time of our code for selecting these active records spends only similar to 14 s. The resulted file is only similar to 2.2 megabyte in size, which is much smaller than that of >100 megabyte when plotting the whole catalog. The run time of plotting active records is about one minute, greatly reduced from >10 h when plotting the whole catalog.
KeywordSuperposition relationship Virtual bitmap Superficial-portrait plotting Massive data Occlusion culling Earthquake catalogs
DOI10.1007/s12145-022-00793-9
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
WOS KeywordCOMPLETENESS ; FREQUENCY ; MAGNITUDE
Language英语
Funding ProjectNational Natural Science Foundation of China[41941002] ; Key Research Program of the Chinese Academy of Sciences[ZDBSSSW-TLC00104]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
WOS Research AreaComputer Science ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Geosciences, Multidisciplinary
WOS IDWOS:000773854600001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105032
Collection地球与行星物理院重点实验室
Corresponding AuthorZhang, Jinhai
Affiliation1.Minzu Univ China, Sch Informat Engn, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Shuqin,Zhang, Jinhai. Merging plot of massive earthquake catalogs using the minimum number of active records[J]. EARTH SCIENCE INFORMATICS,2022:7.
APA Wang, Shuqin,&Zhang, Jinhai.(2022).Merging plot of massive earthquake catalogs using the minimum number of active records.EARTH SCIENCE INFORMATICS,7.
MLA Wang, Shuqin,et al."Merging plot of massive earthquake catalogs using the minimum number of active records".EARTH SCIENCE INFORMATICS (2022):7.
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