Cartographic masks for water level trend map products GAL213

## **Abstract** \n\nThis dataset was created within the Bioregional Assessment Programme for cartographic purposes. Data has not been derived from any source datasets. Metadata has been compiled by the Bioregional Assessment Programme.\n\n\n\nCartographic masks for map products GAL group 2 products, used for clear annotation and masking unwanted features from report maps.\n\n## **Dataset History** \n\nA shapefile was created for the use of masking data to highlight text.\n\n\n\nMethod:\n\n\n\n\\* A new polygon shapefile was created with no content\n\n\\* The shapefile was then populated in an ArcMap editing session by digitizing polygons which surround text.\n\n\\* ArcMAP's Advanced Drawing Option was then used to mask data behind text.\n\n## **Dataset Citation** \n\nBioregional Assessment Programme (2015) Cartographic masks for water level trend map products GAL213. Bioregional Assessment Source Dataset. Viewed 07 December 2018, http://data.bioregionalassessments.gov.au/dataset/c714da92-0434-423d-85d0-f48242825fb9.

## 摘要

本数据集由生物区域评估计划（Bioregional Assessment Programme）为制图用途编制，未从任何源数据集衍生而来，元数据亦由该计划汇编完成。

GAL组2类地图产品的制图掩膜（cartographic masks），用于为报告地图实现清晰标注并遮蔽冗余要素。

## 数据集沿革

曾创建一个形状文件（shapefile），用于对数据进行掩膜以突出显示文本内容。

## 编制方法

* 新建一个无内容的多边形形状文件（polygon shapefile）
* 随后在ArcMap编辑会话中，通过对文本周边的多边形进行数字化操作，为该形状文件填充要素
* 随后启用ArcMAP的高级绘图选项（Advanced Drawing Option），对文本后方的数据进行掩膜处理

## 数据集引用

生物区域评估计划（2015）《GAL213水位趋势地图产品制图掩膜》，生物区域评估源数据集，2018年12月7日查阅，http://data.bioregionalassessments.gov.au/dataset/c714da92-0434-423d-85d0-f48242825fb9.