국토부·KOICA, 개발도상국 공간정보기술 연수 과정 중 QGIS를 이용한 UN Global Map 활용 및 편집

1. Using QGIS and
ISCGM Global Map
2013. 11. 04
Minpa Lee(mapplus@gmail.com)
Heegu Park(hgpark@gaia3d.com)

2. Lecturer
Name: Minpa Lee
Department: R&D, Mango System inc.
사진
Contact: #A201, 98, Haenggung-ro, Paldal-gu, Suwon-si,
Gyeonggi-do, 442-130, Korea
E-mail: mapplus@gmail.com
<Education Background>
- BA on Seoul National University, Korea, Geography Education(03. 1992 ~ 02. 1999)
<Community>
- OSGeo, Charter member
- OSGeo Korean Chapter, Korean Translator
2

3. Contents
• I. Overview–QGIS & Global map
• IV. Extending QGIS
– I-1. QGIS Overview
– I-2. ISCGM Global Map V.2
• II. Installing QGIS
– IV-1. QGIS Plugins
• V. Editing Global Map Data
–
–
–
–
– II-1. Installing QGIS
– II-2. Installing Google Earth
• III. Using QGIS
–
–
–
–
III-1. QGIS GUI
III-2. QGIS Toolbar
III-3. Working with Vector Data
III-4. Working with Raster Data
V-1. Setting Environment
V-2. Digitizing Toolbar
V-3. Digitizing an Existing Layer
V-4. Creating a New Layer
• VI. Import & Export
– VI-1. Import
– VI-2. Export
– VI-3. Export to OGC GML format
3

4. I. OVERVIEW
– QGIS & GLOBAL MAP
4

5. I-1. QGIS Overview
QGIS  Free & Open Source Geographic Information System
OS
 MS Windows
 Mac OSX
 Linux, Unix
License
 GPL
Language
 C++, Python
5

6. I-1. QGIS Overview
 QGIS
 Desktop GIS for
querying, creating,
editing, analyzing
geospatial data
QGIS
Desktop
QGIS
Browser
QGIS Library(C++)
QGIS
Server
QGIS
Client
 WMS 1.3.0, 1.1.1 Server
 FastCGI/CGI Program
 SLD Support
6
 Browser for spatial data
 Web Mapping Framework
based on QGIS Server
and GeoExt

7. I-2. ISCGM Global Map V.2
ISCGM - International Steering Committee for Global Mapping
http://iscgm.org
7

8. I-2. ISCGM Global Map V.2
Vector Layer – Transportation, Boundaries, Drainage, Population Centres
Layer
Transportation
Boundaries
Drainage
Population
Centres
Name
Type
Airport
Railroad Station
Railroad
Road
Trails and Tracks line
Ferry route
Port
Political Boundary
Coast Line
Political Boundary Line
Political Boundary Area
Miscellaneous(Dam/Weir/Island,
Spring/Water-Hole)
Aqueduct/Canal/Flume/Penstock
Miscellaneous(Dam/Weir)
Water Course
Inland Water
Built-up Area (point)
Built-up Area (face)
Inclusion
Abbreviation
Point
Point
Edge
Edge
Edge
Edge
Point
Point
Edge
Edge
Face
Optional
Optional
Mandatory
Mandatory
Mandatory
Optional
Optional
Mandatory
Mandatory
Mandatory
Mandatory
airp
rstatp
raill
roadl
Traill
ferryl
portp
polbndp
coastl
polbndl
polbnda
Point
Optional
miscp
Edge
Edge
Edge
Face
Point
Face
Optional
Optional
Mandatory
Mandatory
Optional
Optional
aquel
miscl
riverl
inwatera
builtupp
builtupa
Global Map data is equivalent to 1:1 million scale map
8

9. I-2. ISCGM Global Map V.2
Raster Layer – Elevation, Vegetation, Land Cover, Land Use
Layer
Type
Elevation
Raster
Name
Raster
Vegetation
Land Cover
Land Use
Raster
Raster
Raster
The vertical distance between the surface of the earth and the standard sea
level
Percent Tree Cover data by an integer value from 0 to 100
GLCNMO global legend
Codes developed for Global Map
Elevation
Vegetation
Land Use
Land Cover
9

10. I-2. ISCGM Global Map V.2
Process overview
10

11. I-2. ISCGM Global Map V.2
Topology Rule – Edge(Line)
11

12. I-2. ISCGM Global Map V.2
Topology Rule – Face(Polygon)
12

13. I-2. ISCGM Global Map V.2
Sample Layers - Korea
13

14. II. INSTALLING QGIS
14

15. II-1. Installing QGIS
Install QGIS Dufour (2.0.1) on Windows OS
①
②
③
④
Download latest QGIS Dufour (2.0.1) from http://www.qgis.org/
Save the File to your machine and double click on the .exe file to install
Accept the install defaults to complete the process
Launch QGIS
15

16. II-1. Installing QGIS
Change the language setting/interface of QGIS
① Launch QGIS
② [설정]  [옵션…]  [언어설정]  [U.S. English]  [확인]
③ Select [Setting]  [Options…] menu and Select [Locale]  [U.S. English] 
[OK]
④ Restart QGIS
16

17. II-2. Installing Google Earth
Install Google Earth on Windows OS
① Download latest Google Earth from http://www.google.com/intl/en/earth/ or
http://earth.google.com
② Save the File to your machine and Double click on the .exe file to install
③ Accept the install defaults to complete the process
④ Launch Google Earth
17

18. II-2. Installing Google Earth
Change the language setting/interface of Google Earth
① Launch Google Earth
② [도구]  [옵션…]  [일반]  [언어 설정] [English (US)]  [확인]
③ Select [Tools]  [Options…]  [General]  [Language settings]  [ English
(US)]  [OK]
④ Restart Google Earth
18

19. III. USING QGIS
19

20. III-1. QGIS GUI
① Menu bar
1
2
② Tool bar
③ Layer List
3
④ Map View
⑤ Overview
⑥ Status bar
4
5
6
20

21. III-2. QGIS Toolbar
Customizing toolbar
Right-click on empty gray part of TOOLBAR area
Click on the TOOLBAR handle (gray dots on left edge) to enable MOVE control
Drag the TOOLBAR handle to any open space on TOOLBAR AREA and let go
21

22. III-3. Working with Vector Data
Adding vector data
• Click [Layer]  [Add Vector Layer…]
• Browse to the “C:WorldMapvector” folder and select all files that ends “*.shp“
• Notice that the Source Type will default to SYSTEM encoding.
– QGIS is VERY good at handling various character set encodings (such as multi-byte Chinese
& Japanese, or UTF-8)!
• Click [open] button to add the selected layers to the current project.
22

23. III-3. Working with Vector Data
Exploring maps
Zoom Full
Zoom In
Pan Map
Zoom Out
23
Zoom To Layer
Zoom To Selection

24. III-3. Working with Vector Data
Identifying features
Identify Features
24

25. III-3. Working with Vector Data
Selecting features & opening attribute tables
Identify
25

26. III-3. Working with Vector Data
Styling point layers
26

27. III-3. Working with Vector Data
Styling line layers
27

28. III-3. Working with Vector Data
Styling polygon layers
28

29. III-3. Working with Vector Data
Labeling layers
29

30. III-4. Working with Raster Data
Adding raster data
• Click [Layer]  [Add Raster Layer…]
• Browse to the “C:WorldMap” folder and select the filename that ends
“ALPSMW274822845_ortho.tif“
• Click [open] button to add the selected layers to the current project.
30

31. III-4. Working with Raster Data
Styling raster layer
<Style>
<Transparency>
31

32. IV. EXTENDING QGIS
32

33. IV-1. QGIS Plugins
Installing QGIS plugins
① Click [Plugins]  [Manage and Install Plugins…] menu
② Select [OpenLayers Plugin]
③ Click [Install] button
 Manual Installation
① Copy [C:WorldMappluginopenlayers_plugin.zip] file to [C:Users[your login
name].qgis2pythonplugins] folder
② unzip files and restart QGIS
33

34. IV-1. QGIS Plugins
How to use OpenLayers Plugin
① Click [Plugins]  [OpenLayers Plugin] menu
② Select [Add Google Satellite layer]
③ Select vector layer and click [Zoom to Layer Extent]
34

35. V. EDITING GLOBAL MAP DATA
35

36. V-1. Setting Environment
Setting the Snapping Tolerance and Search Radius
①
②
③

Click [Settings]  [Options…] menu
Select Digitizing tab
Set snapping environment:
Default snap mode


Default snapping tolerance


To vertex and segment
10.0 pixels
Default radius for vertex edits

10.0 pixels
36

37. V-2. Digitizing Toolbar
Vector layer basic editing toolbar
1
2
3
4
5
6
7
1.
Save Layer Edits
4.
Add Feature
5.
Move Feature(s)
6.
Node Tool
7.
Delete Selected Features
8.
Cut Features
9.
10
Toggle Editing
3.
9
Current Edits
2.
8
Copy Features
10. Paste Features
 Tips: Panning the map during digitizing is possible with the arrow keys or
mouse wheel or space bar + mouse
37

38. V-3. Digitizing an Existing Layer
Editing layers
①
②
③
④
⑤
⑥
⑦
⑧
Select the target layer you want to edit
Click
button from the digitizing toolbar
Click
button to add feature
Start digitizing on the map
To finish digitizing, right-click anywhere on the map
Enter the attributes for the new feature
Click
button to save edits.
Click
button to stop editing
38

39. V-3. Digitizing an Existing Layer
Editing polygon layer - inwatera kor
39

40. V-3. Digitizing an Existing Layer
Editing line layer - roadl kor
40

41. V-4. Creating a New Layer
Creating and Editing Shapefiles
①
②
③
④
⑤
Click [Layer]  [New]  [New Shapefile Layer…] menu
Select Polygon Type and set WGS 84 CRS
Enter “Name” by manually typing in the Name textbox
Click [Add to attributes list] button
Click OK button and specify new layer name
41

42. VI. IMPORT & EXPORT
42

43. VI-1. Import
Import CSV File 1
① Click [Layer]  [Add Delimited Text Layer…]
② Select the CSV file from [C:WorldMap events.csv]
③ Check X, Y fields


X = LON
Y = LAT
43

44. VI-1. Import
Import CSV File 2
① Click OK and Select Coordinate Reference System
② Right-click on the layer to Open the Attribute Table, and make sure the
tabular data was imported
44

45. VI-2. Export to Shapefile
Export to ESRI Shape file
① Select [events] layer
② Right-click and select [Save As…] menu
③ Options


CRS transformation
Encoding
④ Click OK
45

46. VI-2. Export to OGC GML format
OGC GML: XML grammar for expressing geographical features
① Add [roadl kor] layer from shapefiles and select layer
② Right-click and select [Save As…] menu
③ Select UTF-8 Encoding

Default xml encoding
④ Click OK
46

47. VI-2. Export to KML format
Export to Google Earth KML format
①
②
③
④
⑤
Add [roadl kor] layer from shapefiles and select layer
Right-click and select [Save As…] menu
Select WGS 84 CRS
Click OK
Go to [Windows Explorer] and double click kml file
47

48. Q&A
48

49. Reference
•QGIS Home: http://www.qgis.org
•QGIS Online Manuals: http://www.qgis.org/en/documentation/manuals.html
•QGIS Workshop : http://maps.cga.harvard.edu/qgis/
•UC Davis QGIS Lab: http://www.plantsciences.ucdavis.edu/plant/qgislabs.htm
•Scratching Surfaces : http://www.surfaces.co.il/?p=872
•Nathans QGIS Blog: http://woostuff.wordpress.com/
•Spatial Galaxy : http://spatialgalaxy.net/
49

50. THANK YOU!
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