The data for this project consisted of three predefined data sets all constructed for use in ArcGIS and were either constructed as shapefiles or ArcRaster formats. These data sets were provided by Simon Fraser University's GIS lab. Also used for this analysis were two created layers which were digitized from the predefined sets.
These data sets and descriptions of use are as follows:
DEM of Lower Mainland: (LowerMainlandDEMs) NTS_92g07w: used in ArcScene for creation of 3D image. Converted to Idrisi for slope analysis and digitization of erosion layer.
Satellite Images: (Landsat_lwr_mainland) Bands 2,3,4: used as drape image for 3D image. Contributed to erosion layer and roads layer. This image was first altered in ER Mapper 6.4 in order to combine the three bands and add color to produce a false color NIr image. It was then projected in Nad83 UTM 10N in order to correspond to that of NTS_92g07w.
GVRD Land use: (GVRD Landuse): This was the most difficult image to use as the design was that of a shapefile and the extent was much larger than the base layer that was to be used (NTS_92g07w). This required creating a blank layer with the similar projection of the DEM layer (Nad83 UTM 10 N) and clipping the blank image to that of the DEM. After the clip was executed, GVRD Landuse was then clipped to this blank image. The new extents were close to that of the DEM. Other issues regarding this shapefile were problems with the attribute data as it contained duplicate fields and values. The database file was altered in MS Excel and new values were created for the LU_CODE type as the original contained text and numbers. Idrisi did not like this format. Once created as an Idrisi vector file, it was converted to raster to allow for multi criteria analysis. While the data in this file did not contain numerous values for the study area, it was effective as a limiter for the region and to protect issues of evaluating SFU. While the areas in question for development are in the class of forest and protected regions, recent construction on the mountain has shown that development may take place in this region.
Erosion: This layer was digitized from the DEM layer in Idrisi. This was successful because the 3D image allowed for visual detection of over steepened slopes as well as small stream cut valleys. This image was then converted to raster for analysis.
Roads: The roads layer was created from the satellite image as the three bands allowed for good viewing of the roads on Burnaby Mountain. This was accomplished by digitizing on the zoomed in image. Road digitization was limited to that of Burnaby Mountain and SFU.
Software Used:
Idrisi Kilimanjaro
ArcGIS (8.3 and 9.0)
Microsoft Excel
Adobe Photoshop 7
Adobe GoLive 6.0
Microsoft GIF Animator
References:
Natural Resources Canada http://www.gsc.nrcan.gc.ca/urbgeo/geomapvan/geomap2_e.php
Jeff Pribell (General Contractor)
Brison, S. (2002). Adobe GoLive for Macintosh & Windows. Peachpit Press, USA.