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What are the purposes of Archiving versioned data? Lets you record and access changes to data. Archiving allows temporal analytical capabilities by documenting data changes over time. Archiving can help answer the following questions: How have features changed shape over time, such as a wastewater network being reworked to accommodate a city's continued growth? How have attributes changed, such as zoning or parcel ownership? What are Subtypes in ArcGIS Pro? Subset of features sharing common attributes. For instance, a subtype for a local street may be created that when this type of street is added to the feature class, its speed limit attribute automatically gets assigned 35 miles per hour. What are Domains in ArcGIS Pro? Used to constrain the valid values for a particular field. Attribute domains allow you to set a list of options that help prevent errors being introduced when users add or edit attribute values. You are creating a streets dataset. You want to constrain the Types field to local roads, highways, and off-ramps. Which data behavior would you use? Domains What is Topology? Connectedness, adjacency, and proximity between features. Topology enables you to define spatial relationships you want to preserve in your GIS data.
Which item can be used to manage raster data? Mosaic dataset What is the shape of the Earth? oblate spheroid If you cannot find the original projection for geographic data, you can use any geographic coordinate system that is appropriate for the region of the world that you are mapping. T/F False Which three statements about geographic coordinate systems are true? Choose three. A. A geographic coordinate system uses a three-dimensional spherical model to identify specific locations on the earth. B. A geographic coordinate system's coordinates are based on latitude and longitude values. C. A geographic coordinate system provides linear measures on a planar surface from a defined origin. D. A geographic coordinate system is depicted by graticule of intersecting parallels and meridians. E. A geographic coordinate system's coordinates are shown in linear units, usually feet or meters. A. A geographic coordinate system makes use of a three dimensional spherical model to designate the location of a spot on the earth. B. The coordinates of a geographic coordinate system are defined by the latitude and longitude values. D. A geographic coordinate system is depicted by a graticule of intersecting parallels (latitude) and meridians (longitude).
Latitudes The distance in degrees north or south of the equator Longitudes or Meridians Lines running north and south Graticules A graticule is created by combining the lines of latitude and longitude. Prime Meridian A prime meridian is the zero value for longitude. While the official prime meridian passes through Greenwich in southeast London, United Kingdom, the choice of prime meridian for a given coordinate system is somewhat arbitrary. It is not necessary to define a zero value for latitude because it is always the equator. Datum A datum is a reference surface used for describing the position of locations on the Earth's surface. It is defined by its origin and orientation of latitude and longitude. A spheroid approximates the shape of the earth. A datum describes the location of the spheroid with respect to the center of the Earth. The coordinate values for a data set change when referred to different spheroid and underlying datum. Coordinate information can be stored as values in a table. True/False True To create a map to compare global data, what type of spatial reference should you use? Earth-centered datum 3 choices
If you can't find the original projection for geographic data, you can use any geographic coordinate system that is appropriate for the region of the world that you are mapping. False Which three statements about geographic coordinate systems are true? Select three. A. The coordinates of a geographic coordinate system are in linear units, such as feet and meters. B. A geographic coordinate system is represented by a graticule of intersecting parallels, or latitudes, and meridians, or longitudes. C. A geographic coordinate system identifies specific locations on the earth based on a three-dimensional spherical model. D. A geographic coordinate system provides linear measurements on a planar surface from a predefined starting point. E. A geographic coordinate system's coordinates are based on latitude and longitude values. B. A geographic coordinate system is represented by a graticule of intersecting parallels (latitude) and meridians (longitude). C. A geographic coordinate system uses a three-dimensional spherical model to identify specific locations on the earth. E. A geographic coordinate system's coordinates are based on latitude and longitude values. Name the 3 projection types of PCS Cylindrical projections Conic projections Azimuthal/planar projections Projected Coordinate Systems projection on a flat surface 2D
What property does Equidistant projections preserve? Equidistant projections retain true scale between one or two points to every other point on the map, or along every meridian. This example shows an equidistant conic projection in which distances along all the meridians are proportionally correct. The distortion is constant along any given parallel. The distances are correct, with no distortion along the standard parallels. Also, there is no shape, area, and scale distortion along the standard parallels, but the farther away from these standard parallels, the greater the distortion. What property does Azimuthal projections preserve? Azimuthal projections preserve direction from one or two points to every other point. In this example, the azimuthal equidistant projection, only distances and directions to all places are true from the center point of the projection. Any distance or direction that is measured from the center of the map will be correct but any distance or direction that is measured from any other point will be incorrect. gnomonic projection preserves Gnomonic projections preserve the shortest route (distance and direction) but cannot preserve area. With this example, the north pole gnomonic projection any straight line drawn on the map is on a great circle, but directions are true only from the center point of projection. What does Compromise projection preserve? Compromise projections try to balance shape and area distortion. No flat map can be both equal area and conformal; you need a globe for that instance. One widely used example is the Winkel Tripel projection, which minimizes overall distortion but does not preserve any of the four spatial properties. Compromise projections are named because no one property is completely accurate, but no property is extremely inaccurate. If a map preserves two spatial properties, one of them is always direction. Yes
To produce a map that has minimal distortion and perfectly preserves none of the four spatial properties, what kind of projection should be used? Compromise 3 multiple choice options We have an expert-written solution to this problem! Which three surfaces are developable surfaces for creating map projections? Select three. Cone Ellipse Cylinder Plane Sphere Cone Cyclinder Plane To make a map for calculating how much total land is part of a national park, which spatial property should be preserved? Shape Area Distance Direction Area Which two statements about projected coordinate systems are true?
What projection is Aspect-adaptive cylindrical? Compromise map projection What projection is Azimuthal equidistant? Azimuthal equidistant What projection is Behrmann? Cylindrical equal-area What projection is Berghaus Star? Interrupted projection in the form of a star What projection is the Bonne? Equal Area projection What projection is the Eckert? Eckerts I-V are pseudocylindrical. I, III V are compromise while II and IV are equal area. VI is equal area What projection is the Eckert-Greifendorff? Equal-area projection You are making a map for a report on a contentious issue. The report and the map will receive a great deal of scrutiny. You locate a dataset that supports the thesis of the report. Based on the metadata about the dataset below, what is the best course of action? Continue to search. This dataset may be a re-publication of a dataset from a more trustworthy source, such as a university.
3 choices Which three statements describe common editing tasks with spatial data? Select three. Edit an existing feature. Convert features to raster. Create a new feature. Delete a feature. Transform the coordinate system. Edit an existing feature. Create a new feature. Delete a feature. When people say that metadata is "data about data," what do they mean? Metadata is data that describes data. 3 multiple choice options How is location identified in a GIS? x,y coordinates 3 multiple choice options With GIS data, which format is correct for noting a geographic location? 42.944, - 122. 3 choices
over the past year, and you'd like to know what the spending demographics were that purchased the most of any particular product. How would you organize your analysis? Place the following steps in order. A. Enhance the layer in the map with demographic data. B. Update the metadata. C. Map the spreadsheet data. Map the spreadsheet data. Update the metadata. Enhance the layer in the map with demographic data. Which three sources are potential sources of GIS data? Select three. MP3 datasets Business intelligence databases Oracle databases Microsoft Excel spreadsheets MP4 videos Business intelligence databases Oracle databases Microsoft Excel spreadsheets Which two formats are for vector data? Select two. Shapefiles Raster datasets TIFF files
Point feature classes Shapefiles Point feature classes Which attribute or feature type can be represented as continuous data? Ocean depth 3 multiple choice options If it does not make sense to take an average of the values in the data, then the data is continuous. True/False True Spatial data is any data that has everything about the location of some feature or phenomenon. T/F? True Vector Attributes Attributes can be user defined or automatically generated. ArcGIS automatically creates the ObjectID, Shape, Shape_Length, and Shape_Area attributes; other fields are created and updated by users. T/F?
Which statement is true? A. Polygons are to represent local parks at small scales. B. Cities can be represented as point features at large scales. C. Real-world features can have different geometries such as points, lines, or polygons at different scales. D. Each real-world feature can be represented by only one geometry type - either a point, line, or a polygon in a map. Real-world features may be represented by different geometries - points, lines, or polygons at different scales. Every row in an attribute table corresponds to one vertex of a feature in the map. T/F False Raster data model A raster is the model of storing information in rows and columns of cells. What is an image in GIS? An image is a 2D pictorial representation. All images are rasters, but all rasters are not an image. For instance, a set of data in showing rainfall levels would be considered a raster but isn't an image. Each pixel of a raster has attribute information. T/F
False. Which of the following statements is true about the raster data model? A. The raster data model represents the surface of the earth as a grid of equally sized cells. B. The raster data model uses different-sized cells to represent different features on the earth's surface. C. The raster data model represents discrete features on the earth's surface as points, lines, and polygons. D. The raster model represents the continuous features on the earth's surface as points, lines, and polygons. The raster model represents the surface of the earth as a grid of equally sized cells. Raster attributes are usually user defined. T/F False
