LACS 2019

Geospatial Data: What you need to know to help your researchers

data sources:

• data in Google drive
• WMTS layer of Provincia de Valparaiso map, Information about Provincia de Valparaiso map

Part I: Working with Geographic Data

• Download and unzip roads
• Open QGIS
• Add roads
• Install OpenLayers plugin
• Add OpenStreetMap basemap
• Add Bing Aerial basemap
• Download and unzip province boundaries
• Add boundaries
• Look at table cleanup video - 40 minutes in 4 minutes!
• Add Excel table to map
• What matches?
• Join based on matching fields
• Export to new file

Part II: Points in Polygons

• turn off the roads the layer
• download the data from: https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1
• layer -> add layer -> add delimited text layer
• change to all files
• select the 'results' file
• click on the 'custom delimiters' radio button
• set coordinate system to wgs 84
• once the file is in, we have to reproject it, so:
• right click on 'results' and select save as
• browse to a place to save it and name it 'results_projected'
• for the CRS, select 'EPSG:32719 - WGS 84 / UTM zone 19s
• say 'ok'
• under the vector drop down menu choose 'analysis tools' -> 'count points in polygon'
• It should automatically have 'division_provnicial' as the polygons and 'projected results' as the points'
• Click 'Run'

data sources

• Shapefiles for provinces and roads
• [Census data for Chile 2017] (http://www.censo2017.cl/microdatos/)