Friday, October 16, 2015

GPS Points Collection Map

This is map my group and I created in our GIS class. This map shows specifically one building, one road and tree trees located on the University of Belize campus in Belmopan. First off, to get this data we had to go out and mark the points with a GPS along with recording attribute data for each of the three. For roads the condition was recorded, for the building the name and area was recorded. Area was calculated automatically on the GPS using a specific application on the GPS. For the trees the name and height (by class,i.e short, average and tall) was recorded as the attribute data. The GPS way points where then taken off the GPS on transferred onto a junk drive. Next, the GPS data was imported into the ArcMap program using the GPX to features tool in the program. Then, a shape file for trees, roads and buildings were created by right clicking the folder we are working with and clicking new shape file. The coordinate for each shape file was set as WGS_1984 coordinate system. The shape file for trees was set as point, buildings as polygons and roads as polylines. Next the specific fields of attribute data that we are looking for and recorded was entered by going to the properties of each of these shape files while in arc-catalog and entering the name of the field we want for each shape file along with the data type for each field. Next arcMap was opened again and these three new shape files that were created were added. Next, we started an editing session by going to customize , then tools and the editor. In the editor tool bar we click start editing to begin the editing session. Next, in the create features windows that opened the three shape files were there. each one was clicked and the the proper construction tool was chosen and the buildings (polygon) were drawn by connecting the points, same as the roads (polyline). After that process was completed the edits were saved and then the attribute table was opened for each layer one at a time and the non-spatial data was entered in their respective fields. Once that was done the edits were saved again and the editing session was ended. Next, a base map called world topography that is found in the program was added. After that, we entered the layout view and changed the page to landscape and added in the basic map elements, such as the north arrow, title, date, author, scale text, scale bar and legend was added and modified to personal specifications.The labeling for each layer was turned on as well. Lastly, an inset map was created by adding a new data frame and adding the the world countries data to show the extent of Belize; and another using Belize districts data to show the extend of the layers. Then, the final modifications were done to the map, it was saved and then exported as an image.

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