This application was done by Yulin Zhu (18). It is a prototype for the output of of the MPO program, and allows different historic Gettysburg Maps to be compared to each other, and to different GIS maps. Note that up to two maps (or pictures of maps) can be displayed, and by adjusting the opacity of the second historic map can be compared to the first historic map. Further by adjusting the opacity of the either historic map to zero, the other historic maps opacity can be adjusted and this historic map can be compared to the GIS map.
Click here to see this application.