gis

中文參考資料：http://pro.arcgis.com/zh-cn/pro-app/

coursera上相關入門課程：

Introduction to Geographic Information Systems (GIS)

ArcGIS Basics

Making Maps With Common Datasets

data frames and layers數據幀和圖層

The data frame is the collection of layers, but also defines quite a lot about how those layers are displayed to us, including the projection the layers are shown in and how these layers are shown together on the page. 

Retrieving and Sharing Data

 

=======

 

透明圖層 

When exploring data or laying out maps, setting some layers to be partially transparent can help you to view your data in the context of other data, including the basemap

數據集

Viewing the attached metadata is the best first step to learn more about a dataset.

符號

Symbology is a property of layers loaded into ArcMap, so it is set directly on the layer

Scale dependent rendering

Scale dependent rendering allows the user control over what layers are displayed at which scale. This allows the user flexible control over what they see.current map scale.

Normally it is useful to hide small items when zoomed out to keep the display uncluttered.爲整潔，縮小時隱藏小內容

屬性

Each record in an attribute table for a feature class has a feature associated with it and each feature has a record.屬性表

select by attributes tool

query

like

'ABC%': 全部以 'ABC' 起頭的字串