There are many different projection methods but how do you decide which ones to use? Then, how do you set the settings for a projection method to be the best for your area of interest? This lab will let you explore projections and their settings and evaluate the error associated with projection methods. BlueSpray is a GIS program that was created by Jim Graham and it contains a powerful tool to help visualize the error associated with projections. Take a look at the image on the right of the dialog. The areas that appear read indicate locations where the spatial data has been stretched (high distortion) while the green areas indicate minimal distortion and purple indicates area where spatial data has been compressed (also high distortion). The limits of ‘high’ and ‘low’ are set in the controls in the lower left where is shows ‘Allow Distances from’, ‘Allow Areas from’, and ‘Allow Angles from 0 to.’ Countries of the world projected using Mercator with no limits on distortion. Note how Antarctica is stretched out to the bottom of the projection. Now let’s take a look at some other popular projection methods. ‘Albers Equal Area’ is a projection that attempts to maintain areas while letting the distances be distorted. Universal Transverse Mercator (UTM) is one of the most popular projection systems. Let’s see how it performs. In the next series of steps you will create a table in Microsoft Excel and fill in the values for the distortion for four different projections of your choice. The table shown below is an example of the table you should create in Excel. For each of the four projections you choose, enter the distortion value for parallels, meridians, area, and angle (conformal). In addition you will take a screen shot of each of your projections to include in the report as figure with a caption. An example of what this should look like can also be seen below Upload at least one screen capture of your projections to Moodle. You may copy and paste it into a blank word document for simplicity. Source.