Difference between revisions of "Education Material Development"

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This page is just a temporary holding area for links to any new material developments efforts going on. 
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== GIS&T Body of Knowledge Curriculum ==
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Material relating directly to this existing curriculum.  Contact [[User:Tmitchell|Tyler]] for more info.
 
* [[Unit AM4 Basic analytical operations]]
 
* [[Unit AM4 Basic analytical operations]]
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=== Exercise Data ===
 
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'''Type of Data'''
 
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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:
 
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# points - several dozen points roughly grouped together
 
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# lines - a simple network of lines would be ideal
 
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# areas - one or more polygons
 
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# raster - with some simple grouped classes, not too noisy and similar in appearance to points, lines or areas.
 
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'''Specific Examples'''
 
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All examples in this instance of the training are from the North Carolina demonstration dataset shapefiles and grids.
 
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# points - bus stop locations - ''busstopsall.shp''
 
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# lines - stream network - ''streams.shp''
 
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# areas - lakes - ''lakes.shp''
 
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# raster:
 
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## a single point-like feature class - ''facility.grd''
 
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## road linework - ''roadsmajor.grd''
 
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=== Buffering a Multiple Point Shapefile ===
 
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==== Method ====
 
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# open GIS application
 
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# add shapefile or raster layer to the map view
 
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# zoom to the extent of the layer
 
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# select ''buffer'' geoprocessing tool
 
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# enter required parameters and options:
 
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## ''input layer'' - the layer that the buffer operation will be applied to
 
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## ''output layer'' - the new file that will be created and include the buffer features.
 
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## ''distance'' - the distance from the input features that the buffer will be created at
 
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## 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.
 
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==== Exercise using QGIS ====
 
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This exercise uses the above method as it applies directly in QGIS.  Other projects will be welcome to add their own example exercises as well.
 
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'''TODO: Add screenshots'''
 
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# Launch QGIS
 
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# Load the data layer.  Using menus at top of screen select '''LAYER -> Add Vector Layer'''
 
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## Press '''Browse''' button
 
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## Navigate to the folder holding the sample datasets and select '''busstopsall.shp''' and press '''Open''' button
 
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## QGIS will automatically zoom to the extent of the bus stop features
 
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# Run the buffer process from the menu: '''TOOLS -> Geoprocessing Tools -> Buffer(s)'''
 
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## Set the '''Input vector layer''' to '''busstopsall'''
 
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## Enter '''Buffer distance''' of '''200'''.  This will be 200 metres.
 
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## Set the '''Output shapefile''' by pressing '''Browse''' button.  Navigate to the data folder and enter the new filename as '''busstops_200m_buffer.shp'''.  Press '''Save''' button to select that filename.
 
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## Press '''OK''' button to run the process.
 
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# 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.
 
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# Buffer(s) window remains open.  Press '''Close''' to close the window.
 
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# Reorder the layers so the resulting buffer polygons layer is on the bottom of the layer stack.  Click and drag the ''busstops_200m_buffer.shp'' layer to beneath ''busstopsall''.
 
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==== Observations ====
 
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# notes about what the student should notice about the results...
 
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[[Category: Education]]
 
[[Category: Education]]
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=== Overlay ===
 
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=== Neighbourhoods ===
 
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=== Map Algebra ===
 

Revision as of 11:50, 6 November 2009

This page is just a temporary holding area for links to any new material developments efforts going on.

GIS&T Body of Knowledge Curriculum

Material relating directly to this existing curriculum. Contact Tyler for more info.