This blog is dedicated to the University of Belize's course: NRMP3401- GIS for Natural Resource Managers.
Friday, 16 October 2015
The above map was created using several GPS points collected around the University of Belize's Belmopan Campus using a handheld GPS device by a group of students. The GPS waypoints were then converted into a shapefile so that it can be added into the ArcGIS software. Firstly, it is important to note that GPS points were collected for the four corners of the Coatimundo Building, three trees around campus, and one of the major walkways on campus. Notice the line that appear as zigzags on the map. This line represents the said walkway. To have achieved true representation of the map, students had to mark waypoints for every single bend or curve along the walkway.Also, non spatial data were collected for each type of data. For the trees marked, the height and species were noted. For the road/walkway, the condition was noted. For the building, the name of it was noted. Now, as it relates to constructing the map, the following steps were taken. After the waypoints were converted into a shapefile, all data collected were categorized by creating individual shapefiles for trees, building and buildings. This was done in ArcCatalog. Students had to select their working folder in ArcCatalog and select the file "GPS.shp". Then, the "New shapefile" option was selected after right clicking. For the name enter “Trees” and select point as the type. Next, "Edit" was selected and WGS_1984 Coordinate System was located. The same process was repeated for Roads (Polyline) and Buildings (Polygon). The three shapefiles were added into ArcGis. The data was edited using the editor toolbar to connect the points for the four corner of the building and the walkway. After this, non spatial data collected were entered for each waypoint so that it can be shown on the map. Next, a topographic base map was selected and two insets were created to show where Belize is located in Central America and also, where Belmopan is located in Belize. Lastly, map essentials were added as follows: date, authors, sources, legend, title, north arrow, scale bar, and scale text. The map was exported and saved as a picture (jpeg) as shown above.
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