Using ArcCatalog

Raster dataset properties
A raster dataset’s Properties dialog box lists the specific details
associated with each raster. These properties are divided into five
sections: Data Source, Raster Information, Extent, Spatial
Reference, and Statistics. You can collapse and expand each of
these five sections as you explore this information; by default, all
sections are expanded.
Data Source information is listed first. This section describes the
raster dataset’s name, type, and location. If the raster dataset is
on a server, it has server information rather than path information.
The Raster Information section lists raster-specific properties
including:
• Number of pixels per column and row
• Number of bands
• Cell size (x, y)
• Uncompressed size
• Format
• Source type (continuous/discrete)
• Pixel type (unsigned/signed; integer/floating point)
• Pixel depth (1, 2, 4, 8, 16, 32, 64)
• NoData value
• Colormap (present/absent)
• Pyramids (present/absent)
• Compression type
The Extent section describes the rectangle (boundary) containing
all of the raster dataset’s data. The top, bottom, left, and right
coordinates of the rectangle are listed in the same spatial
reference that the raster is stored.
The raster dataset’s coordinate system is described in the Spatial
Reference section. All of the spatial reference’s parameters are
listed; if a coordinate system has not been defined, this will be
noted instead. To edit the spatial reference information, click Edit
and follow the instructions in the dialog box that appears. For
more information, please see ‘Setting a grid’s coordinate system’
or ‘Setting a nongrid raster dataset’s coordinate system’, in this
chapter.
The Statistics section lists several of the raster dataset’s
statistics: minimum value, maximum value, mean value, standard
deviation, and the number of classes. If the statistics have not
been calculated, or you wish to recalculate them, you can
calculate them by clicking Options, then clicking Build Statistics.
216 USING ARCCATALOG