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shapeinfo

Information about shapefile

Syntax

info = shapeinfo(filename)

Description

info = shapeinfo(filename) returns a structure, info, whose fields contain information about the contents of a shapefile. filename can be the base name or the full name of any one of the component files. shapeinfo reads all three files as long as they exist in the same folder and the unit of length or angle is not specified. If the main file (with extension .SHP) is missing, shapeinfo returns an error. If either of the other files is missing, shapeinfo returns a warning.

Output Arguments

The info structure contains the following fields:

Filename

Char array containing the names of the files that were read

ShapeType

String containing the shape type

BoundingBox

Numerical array of size 2-by-N that specifies the minimum (row 1) and maximum (row 2) values for each dimension of the spatial data in the shapefile

Attributes

Structure array of size 1-by-numAttributes that describes the attributes of the data

NumFeatures

The number of spatial features in the shapefile

The Attributes structure contains these fields:

NameString containing the attribute name as given in the xBASE table
TypeString specifying the MATLAB® class of the attribute data returned by shaperead. The following attribute (xBASE) types are supported: Numeric, Floating, Character, and Date.

More About

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Tips

shapeinfo cannot tell you which coordinate system the data in a shapefile uses. Coordinates can be either planar (x, y) or geographic (lat, lon) and have a variety of units. This information can be critical to the proper display of shapefile vector data. For more information on this topic, see Mapstructs and Geostructs.

See Also

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