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Showing posts from February, 2018

Lab 3: Watershed Analysis

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Lab 3: Watershed Analysis Goal Watersheds are land surface areas, that drain water to one specific location, a group of streams that all lead to one place, would all have the same watershed.The goal of this lab is to delineate watersheds utilizing watershed analysis tools, from a DEM raster image. In this lab, Adirondack Park in New York is the site for attempting to delineate watersheds.  Methods To begin the lab, an Adirondack Park boundary shapefile was obtained, from the New York State GIS Clearinghouse.  Additionally a hydrology shapefile from Cornell Universities Geospatial Information Repository (CUGIR), and a #0_arc_second DEM of North America from ArcGIS online was utilized. In order to determine watersheds, the obtained data needs to be processed. I began by creating a buffer around the park boundary in order to allow for a little more room around the park boundary, that way extra raster values can be included so more raster calculations can be performe...

LAB 2: Georeferencing and Data Creation

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LAB 2: Georeferencing and Data Creation Goal and Background The goal of lab two is to understand how to properly georeference data that does not contain a spacial reference. Additionally, new data will be created to help solve spatial questions. To apply these skills, the goal is to utilize a map of Eau Claire Wisconsin from 1878, and give it a spatial reference, and extract water feature areas from this data, and compare it to the same data just 140 years later in 2018. Methods The first portion of this lab is to understand what needs to be done to get to the end goal which is to analyze water feature area. In part one the goal is to georeference the 1878 map of Eau Claire Wisconsin (Figure 1). This process is done through the use of the georeferencing toolbar in ArcMap where the image of the map can be moved and shaped to attempt to align it with  the Eau Claire area through using a 2018 centerlines shapefile that shows the middle of all the roads in Eau Claire. (Figure 2...

LAB 1

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Introduction For this first lab in Geography 337 GIS II, the goal is to review the skill set we have already obtained from completing GIS I. We reviewed different coordinate systems and projections. We also went over ArcCatalog and its different uses, followed by using ArcMap to view and understand different shape files. Finally we created a couple of maps representing our knowledge on symbolizing different variables, and normalizing these variables. Methodology In this lab we were to create two maps from data from Erie County, New York. To begin this process, first the attribute table was looked at, to determine what variables can be represented through this data. Number of persons and Number of households were the two variables i selected. But these variables would be better represented if normalized by an area on the map, therefore i normalized the data by square miles. This gave me the opportunity to look at the data in terms of smaller areas. Once the data was inserted into th...