The Project tool allows you to project spatial data from one coordinate system to a different coordinate system. Practice: A layer projected with the coordinate system “WGS 1984 UTM Zone … Read more
At certain times when loading new layers into ArcMap, a warning message (“The following data sources you added are missing spatial reference information. This data can be drawn in ArcMap, … Read more
The process of digitizing polygons is similar to that of polylines. In the Create Features panel, select the layer (e. g. plant_cover) and choose Polygon in the Construction Tools. To … Read more
To digitize lines, select the required layer in the Create Features panel (e. g. road_network). In the Construction Tools section, click Line as shown in Figure 17. To draw the … Read more
To start digitizing the points, select a point layer (e. g. buildings) in the Create Features panel. It is advisable to make sure that the Point tool is marked in … Read more
To create new elements or edit existing ones within a shapefile, return to the ArcMap application and add the shapefiles generated as layers using the Add Data icon in the … Read more
6.1. GIS Book: Creating shapefiles The ArcCatalog application (open from the Windows Start menu) is used to create new vector entities such as points, lines or polygons. On the left-hand … Read more
Georeferencing is a technique of spatial positioning by means of which a digital image is assigned a reference system based on known coordinates. Some raster information is not associated with … Read more
Human beings have always felt a need to represent the Earth’s surface and the elements on it, as a result of which maps emerged (IGN & UPM-LatinGEO, 2013). Coordinate systems … Read more
ArcGIS contains a set of applications to solve real-world geographic problems through a sequence of spatial operations. ArcMap is the central application that allows you to perform the usual tasks … Read more
It might seem obvious, but before working with GIS data, it must be in digital format. Almost all the elements on the Earth’s surface can be encoded so that a … Read more