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39 Cards in this Set
- Front
- Back
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System |
a group of connected entities and activities that interact for a common purpose |
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Spatial |
has a broader meaning of space compared to geographic |
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the four components of GIS |
data input and editing subsystem storage and retrieval subsystem manipulation and analysis subsystem data reporting subsystem |
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jim canned the picture and made it digital file, which of the four components of GIS did he use? |
input and editing subsystem |
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Three views of GIS |
Map view model view database view |
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software that mainly usesInternet based GIS |
ArcIMS |
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Description of vector data |
features are stored as a series of x and y coordinates include point, line and polygon it has spatial data and attribute data |
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file format of vector data |
shape file coverage geodatabase |
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Coverage |
is not saved as one folder, and the folder does not have all the info for the GIS data |
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the user can change the unit sets in the data frame property |
Display Unit |
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what type of geographic phenomena is the precipitation |
Continous |
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what is the proportion for the visual balance of a map which is called golden section? |
3:5 |
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Geometric properties |
distance, shape and orientation |
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the smallest non divisable element of a digital image |
Pixel |
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measurement level has the most advanced statistical and mathematical functions |
Ratio |
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what type of the the measurement level is the GPA (0.0-4.0) |
Interval |
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which of the following is not correct for criteria for a good cartographic design |
should be cheap |
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which of the following reference system of the earth is closest to the real shape of the earth |
geoid |
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a set of parameters defining a coordinate system, and a set of control points whose geometric relationship are known |
Datum |
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which of the following should be used for elevation measurement |
Navd88 |
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systematic transformation of the 3-d spherical surface onto a 2-d plane surface of a flat map |
projection |
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Project coordinate system |
does not use x and y axes |
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what type of projection surface is used for the following map projection |
Conic |
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UTM ZONE 14 south and north |
they do not have the same projection parameters |
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projection is mostly used for map of mid latitude area |
Conic |
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projection is good for the map of countries in N/S direction |
Transverse cylindrical |
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Transverse cylindrical projection |
does not have a standard parallel |
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projection has the light source at he point exactly opposite the point of tangency of the projection surface |
stereographic |
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which keeps the area correct in maps |
equivalence |
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which of the following is not a method for surface representation? |
Topography |
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Vector |
has a directional linear connection between points the basic elements of vector data model are points x,y coordinates of points, lines and polygons can be rep'd with unlimited precisison and complex spatial objects are created by connecting primitive objects |
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spaghetti data structure |
if a line is shared by two polygons, it is not encoded as shared line when digitizing |
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topology |
is the spatial relationship between geographic features based on location |
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Vector format |
shapefile coverage dlg tiger |
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square based raster model |
it divides space into discrete uniform unit square cells location is inherent in the storage structue implied by x and y coordinate it does not provide precise location information two dimension array of grid cells is called a layer or grid |
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predominant type |
the cell is assigned the value of the feature that fills the majority of the cell |
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1/5 |
the commonly suggested cell size of the minimum feature to be captured |
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selection rule of grid cell size |
the cell must be small enough the capture the required detail a larger cell size can be used for a more homogeneous region the accuracy (pixel depth) of the grid cell influences the data volume |
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shape files |
needs the geometry calculation to manually update the are and length fields in their attribute table |
