Open Printable/Searchable Copy - Global Mapper

features found in the selected layer(s) are displayed. The following style settings are available:
• Use Default Style Based on Classification or Custom Stlye - This option is the default and specifies
that features should be drawn and labeled using either the custom style applied to each feature, or the
default drawing style for the classification assigned to each feature. You are configure the default
drawing style for any particular classification on the Area Styles tab of the Configuration dialog, the
Line Styles tab of the Configuration dialog, or the Point Styles tab of the Configuration dialog.
• Use Same Style for All Features - This option specifies that all features in the selected layer(s) should
be drawn with the same drawing style, regardless of type or any custom style applied.
• Apply Styling Based on Attribute/Name Values - This option provides a way to base the drawing style
on the value of a particular attribute. This is a powerful feature allowing you to assign a style to a
particular value for a particular attribute. Any features whose value for the selected attribute/name
matches the selected value will be assigned that style. If you have numeric values and the Interpolate
Colors Between Numeric Values option is checked, any numeric values for the selected attribute/name
that do not exactly match a value will find the two closest numeric values and interpolate the color
values in between those numbers. Any features that do not have a matching attribute/name value will
use the default style assignment for their type or the custom style if one has been set. You can also use
wilcard (* and ?) characters in your attribute value to match on values matching some pattern. If you
want to initialize the list of attribute values and styles from those attribute values found in the selected
layer(s), press the Init from Values button. You can also right-click on an existing attribute/style pair
to get a menu of additional options, including one to clone that item into a new value using the same
style.
• Assign Random Colors to Features - This option specifies that each feature shall be assigned a
random color, either from the full set of 24-bit colors, or from a collection of colors specified by the
user in a palette. You can use the Select Base Style button to assign the base style whose color will be
randomly assigned. For areas, if the selected style uses no area fill, then the area border color will be
varied rather than the fill color. For point features, you need to have a dot or custom shape (like dot,
diamond, square, etc.) selected as the symbol for the color randomization to work properly.
Projection Tab
The Projection tab is used to reinterpret the raw vector data to a new projection. This is useful if the wrong
projection was selected for the dataset when it was loaded, or if the data set itself indicated some incorrect
data. This option is rarely used. You can however also use the Elevation Units control to specify what
elevation units that values in the vector data that do not explicitly specify their units should use. This is useful
to indicate if the values associated with 3D vector features or with the ELEVATION attribute for features are
in feet or meters.
Raster Data Options
Selecting the Options... button while only raster overlays are selected displays the Raster Options dialog. The
Raster Options dialog consists of several tabs, each allowing you to control various aspects of how the
selected raster layers are displayed.
Display Tab
Global Mapper User's Manual
The Display tab (pictured below) contains controls allowing you to control the color intensity
(brightness/darkness), color transparency, blending, anti-aliasing, and texture mapping of the selected layers.
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