METHODS FOR THE PRODUCTION OF FIELD FREE-HAND MAPS AND GEOGRAPHIC BASEMAPS IN DIGITAL GEOLOGICAL MAPPING

YANG Xing-chen; YE Pei-sheng; CAI Mao-tang; ZHOU Wei

Volume 23 Issue 3

Jun. 2017

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Article Navigation > Journal of Geomechanics > 2017 > 23(3): 333-338

YANG Xing-chen, YE Pei-sheng, CAI Mao-tang, et al., 2017. METHODS FOR THE PRODUCTION OF FIELD FREE-HAND MAPS AND GEOGRAPHIC BASEMAPS IN DIGITAL GEOLOGICAL MAPPING. Journal of Geomechanics, 23 (3): 333-338.

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METHODS FOR THE PRODUCTION OF FIELD FREE-HAND MAPS AND GEOGRAPHIC BASEMAPS IN DIGITAL GEOLOGICAL MAPPING

1.
Institute of Geomechanics, China Academy of Geological Sciences, Beijing 100081, China
2.
School of Earth Science and Recources, China University of Geociences, Beijing 100083, China

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Received: 2017-02-10
Published: 2017-06-01

Abstract

Abstract

Digital mapping system realizes the informatization in the whole process of regional geological survey from field data acquisition, data processing to result output and so on. Accurate and rapid production of field free-hand maps and basemaps is the foundation of field investigation work. According to the 1:50000 scale regional geological survey, the transformation process of terrain data coordinate system is presented and a set of methods for the rapid production of field free-hand maps and basemaps that meet the relevant accuracy requirements are summarized.The first step is using the "workspace direct projection transformation" function in the projection transformation module of Mapgis 67 to enlarge the 1:50000 scale data. The second step is cutting out the enlarged 1:25000 scale terrain vector data with the Section widget.The third step is adding the latest terrain and surface features according to the remote-sensing image data to achieve the final drawing of geographic basemaps.
- field geological free-hand map,
- geographic basemap,
- coordinate system transformation

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References(9)

References

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