Difference between revisions of "Education Material Development"

Latest revision as of 02:12, 3 November 2011

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Education and Curriculum Committee

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-== Unit AM4 Basic analytical operations ==
+#redirect[[Education and Curriculum Committee]]
-=== Exercise Data ===
-'''Type of Data'''
-Four simple datasets are used for these examples including 3 vector and at least one raster data file.  Each file should generally overlap the region of the other files so that comparison operations can be done in the exercises:
-# points - several dozen points roughly grouped together
-# lines - a simple network of lines would be ideal
-# areas - one or more polygons
-# raster - with some simple grouped classes, not too noisy and similar in appearance to points, lines or areas.
-'''Specific Examples'''
-All examples in this instance of the training are from the North Carolina demonstration dataset shapefiles and grids.
-# points - bus stop locations - ''busstopsall.shp''
-# lines - stream network - ''streams.shp''
-# areas - lakes - ''lakes.shp''
-# raster:
-## a single point-like feature class - ''facility.grd''
-## road linework - ''roadsmajor.grd''
-=== Buffers ===
-'''Method'''
-# open GIS application
-# add shapefile or raster layer to the map view
-# zoom to the extent of the layer
-# select ''buffer'' geoprocessing tool
-# enter required parameters and options:
-## ''input layer'' - the layer that the buffer operation will be applied to
-## ''output layer'' - the new file that will be created and include the buffer features.
-## ''distance'' - the distance from the input features that the buffer will be created at
-## options - including the option to ''dissolve'' the resulting features by merging the buffer features together instead of retaining the individual buffer lines of overlapping buffer perimeters.
-'''Exercise using QGIS'''
-# open QGIS
-# Load the data layer.  Using menus at top of screen select '''LAYER -> Add Vector Layer'''
-## Press '''Browse''' button
-## Navigate to the folder holding the sample datasets and select '''busstopsall.shp''' and press '''Open''' button
-## QGIS will automatically zoom to the extent of the bus stop features
-# Run the buffer process from the menu: '''TOOLS -> Geoprocessing Tools -> Buffer(s)'''
-## Set the '''Input vector layer''' to '''busstopsall'''
-## Enter '''Buffer distance''' of '''20'''.  This will be 20 metres.
-## Set the '''Output shapefile''' by pressing '''Browse''' button.  Navigate to the data folder and enter the new filename as '''busstops_20m_buffer.shp'''.  Press '''Save''' button to select that filename.
-## Press '''OK''' button to run the process.
-# After running, the system asks '''Would you like to add the new layer to the TOC?''' select '''Yes''' and the resulting shapefile will be added as a layer in your map view.
-# Buffer(s) window remains open.  Press '''Close''' to close the window.
-=== Overlay ===
-=== Neighbourhoods ===
-=== Map Algebra ===

Difference between revisions of "Education Material Development"

Latest revision as of 02:12, 3 November 2011

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