The third lab module for GIS5050L consisted of two separate exercises. The first portion of the lab consisted of using ArcGIS Field Maps to collect data for our feature class. This feature class was then shared as an editable layer to create a web map in ArcGIS Online. We also learned to share our data as a KML and an ESRI Map Package. The image above shows the data presented in Google Earth by importing the KML files I created through ArcGIS Online and ArcGIS Pro. I enjoyed this exercise because it introduced me to the various limitations and characteristics of the available map outputs that I have been curious about applying to some of my historic preservation/archeological projects.
The second portion of this week's lab consisted of creating a map comparing three different projections with the same data. This exercise introduced us to the Project Tool so that we are now familiar with changing a layer's projection or, rather, creating a new reprojected layer. We also learned how to assign or reproject a raster to ensure it is in the correct coordinate system. This then establishes the correct location for the raster. Based on the results, it is very apparent that consistent map projections are imperative for accurate data/spatial analysis. I liked how this assignment built on last week's by giving us even more of a chance to make our map our own. I'm looking forward to the concepts introduced in this lab becoming more familiar and clear in the coming weeks.
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