Figure 3: 2014 World View 1 imagery alongside completed supervised classification for 2014 including a housing class in yellow. Once the housing class was added to the classification a thematic recode (Raster -> Thematic -> Recode) was applied to each year’s classified Landsat image. The classes of impervious, surfaces structures, and houses were combined into one general class called urban (figure 4). Figure 4. World View 1 imagery alongside completed supervised classification for 2014 with thematic recode to four classes, with the urban class in gray. With all four years now classified into urban, undeveloped, water, and vegetation, a thematic change detection was done for the years 2014 and 2010; 2010 and 2005; 2005 and 1999; 2014 and 1999 (Raster -> Thematic -> Matrix Union). The least recent year was selected for the Vector #1 file and the most recent year was selected for the Vector #2 file. A separate output was created for each thematic change operation. Results To quantify the change in land use land cover across the years of interest a summary by zone report was created for each thematic change detection (Raster tab -> Thematic -> Summary Report by Matrix). Below is a summary by zone table for the thematic change detection done for 1999 to 2014 (figure 5). Tables for the remaining thematic change detection can be found in appendix A at the end of this report. A map for the thematic change detection done for 1999 to 2014 can be found in appendix B at the end of this report as well. 1999 2014 1999 Total Vegetation Undeveloped Urban Water Vegetation 1560.78 45.14 430.79 1.98 2038.69 Undeveloped 726.12 23559.26 30370.82 5.04 54661.24 Urban 1153.35 6524.46 49490.51 7.29 57175.61 Water 0.81 5.94 48.51 100.91 156.17
Figure 3: 2014 World View 1 imagery alongside completed supervised classification for 2014 including a housing class in yellow. Once the housing class was added to the classification a thematic recode (Raster -> Thematic -> Recode) was applied to each year’s classified Landsat image. The classes of impervious, surfaces structures, and houses were combined into one general class called urban (figure 4). Figure 4. World View 1 imagery alongside completed supervised classification for 2014 with thematic recode to four classes, with the urban class in gray. With all four years now classified into urban, undeveloped, water, and vegetation, a thematic change detection was done for the years 2014 and 2010; 2010 and 2005; 2005 and 1999; 2014 and 1999 (Raster -> Thematic -> Matrix Union). The least recent year was selected for the Vector #1 file and the most recent year was selected for the Vector #2 file. A separate output was created for each thematic change operation. Results To quantify the change in land use land cover across the years of interest a summary by zone report was created for each thematic change detection (Raster tab -> Thematic -> Summary Report by Matrix). Below is a summary by zone table for the thematic change detection done for 1999 to 2014 (figure 5). Tables for the remaining thematic change detection can be found in appendix A at the end of this report. A map for the thematic change detection done for 1999 to 2014 can be found in appendix B at the end of this report as well. 1999 2014 1999 Total Vegetation Undeveloped Urban Water Vegetation 1560.78 45.14 430.79 1.98 2038.69 Undeveloped 726.12 23559.26 30370.82 5.04 54661.24 Urban 1153.35 6524.46 49490.51 7.29 57175.61 Water 0.81 5.94 48.51 100.91 156.17