English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper is focused on applying digital map generalization into the updating of geo-spatial database from large scale in thecollaborative updating environment for SDI, an updating production line system for national topographical database at 1:50k ofChina is introduced. Based on the requirements analysis and review, we analyze the key factors for implementing updatinggeospatial data from large scale including technical and non-technical factors, followed by the general strategy of digital mapgeneralization in practical production environment. In fact the most important factor is recognized that it is very difficult to establishgeneralization rules for production systems. We emphasized on this factor in our work and established a set of rules or constrains forscale topographical database updating 1:50k scaled data from 1:10k scaled data in a full digital environment mainly based on mapspecifications. Finally, the production line system structure is designed and the practical implementation is given

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

AN UPDATING PRODUCTION LINE SYSTEM FOR NATIONAL TOPOGRAPHICAL DATABASE AT 1:50K OF CHINA BASED ON DIGITAL MAP GENERALIZATION