Geographic Information Systems (GIS) Specialization | GIS Data Formats, Design and Quality
2 GIS Data Formats, Design and Quality
Week1
Lesson 1: Vector and Raster Concepts
- 栅格(raster)的坐标原通常在左上角(top left)
- 栅格的属性表(raster's attribute table):选中栅格属性表的某一行不能像Vector一样导出或者只对选中的进行处理!
- 属性表中字段计算器配合栅格属性里查看像元大小可以计算面积!
- Arcmap中的影像分析、ArcGIS Pro中的Raster Layer 有一个Swipe工具666
Lesson 2: Data Design
- Short Integer 16 binary bit
- Long Integer 32 binary bit
- Freeze/Unfreeze Field 可以固定某一字段,查看其他对应字段
- Stastics & Summarize
Libre Office https://www.libreoffice.org/download/download-libreoffice/
Week3
Lesson5
Shapefiles渲染快(rendering),数据检索慢
Dissolve
Lesson6
- GeoReferencing 地理配准 :1.先投影 取消自动.
- Spatial Analyst|Zonal|Zonal Statistic : 非常重要!!! 可以统计栅格在某一区域的各种统计量
- Data Management Tools-Join Field