Play with Vector and Make Map

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Center for Research and Application for Satellite Remote Sensing
Yamaguchi University
Play with Vector and Make Map

Contents
Geospatial sources
Shapefile
Coordinate system
Make map
Output

Download and install:
https://qgis.org/en/site/
QGIS Installation

• Setting → option → general → English
Change language

Google Maps: https://mt1.google.com/vt/lyrs=r&x={x}&y={y}&z={z}
Google Satellite: http://www.google.cn/maps/vt?lyrs=s@189&...

http://desktop.arcgis.com/en/ar
cmap/10.3/manage-data/raster-
and-images/how-features-are-
represented-in-a-raster.htm
Sha...

• DIVA-GIS provides free geographic data such as administrative areas,
inland water, roads, railroads, elevation and land ...

• Global Map Japan was developed by Geospatial Information Authority of
Japan(GSI).
• Download: http://www.gsi.go.jp/kanky...

• http://nlftp.mlit.go.jp/ksj-e/gml/gml_datalist.html
Japan shapefile

World :
• Country boundary ( ne_50m_admin_0_countries.shp ) (Vector)
• Global land-use ( gm_lc_v1.tif ) (Raster)
Japan :
•...

Open QGIS and check their coordinate systems
- Vector – world countries boundary
- Raster – MODIS temperature or global la...

World Azimuthal Equidistant EPSG:54032
Sphere_Eckert_IV EPSG:53012
ETRS89 / EPSG Arctic zone 2-22 EPSG:6069
Data source CR...

• World Azimuthal Equidistant EPSG:54032
Let’s check each different CRS

• Sphere_Eckert_IV EPSG:53012
Let’s check each different CRS

• ETRS89 / EPSG Arctic zone 2-22 EPSG:6069
Let’s check each different CRS

Projected Coordinate System: UTM Zone

Create maps for Japan

Global map japan → WGS84
Check administrative shapefile and its reference

Check attribute table

Change color by prefecture names

• Dissolve
Takes a vector layer and combines its features into new features. One or
more attributes can be specified to di...

District to prefecture by dissolve function

District to prefecture by dissolve function

Check the dissolved result

Please check other useful
- Buffer
- Union
- Eliminate
https://docs.qgis.org/3.4/en/docs/user_manual/processing_algs/qgis/...

https://docs.qgis.org/3.4/en/docs/user_manual/processing_algs/qgis/vectoroverlay.html#qgissymmetricaldifference
Clip Inter...

Statistical data is provided in folder csv
Scale 1:1000 person
Statistical data (in CSV file)

• Check attribute table
Prefecture boundary (Shapefile)

Field name: nam Column name: name
Prefecture have to be same names
Join attribute table

• Allow for editing
• Open field calculator
left("nam", strpos("nam", ' '))
Remove “ken” from “nam” field in shapfile

Result of new prefecture names

Join attribute: add CSV to QGIS

Join attribute table in layer properties

Shapefile attribute table CSV
Joined table result

• First export joined table shapefile
Edit attribute table

• Select the shapefile that you want to edit table
• Allow toggle editing
• Right check on that shapefile and open attribu...

y2015 M2015 F2015 0_14 15_64 over 75 65_74
5382 2537 2845 608 3191 768 790
1973 973 1000 251 1166 259 281
1434 705 729 247...

Right click on the shapefile → layer properties → Symbology → Graduated
Let’s change color

Equal interval Natural break
Numbers of Population by prefectures

$area → square meters
$area / 1000000 → square kilometers
Calculate area

1 = 1000 person
Calculate population density

You can edit existing field !!!!!
persons in square kilometers
Calculate population density

1:1000
Population vs population density

Pie chart: male and female population

Pie chart: male and female population

Pie chart: male and female population

Histogram: four groups of ages

Histogram: four groups of ages

Create map layout

Create map layout

Design your map

Play with Vector and Make Map

Play with Vector and Make Map

Play with Vector and Make Map

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