Map object styles
The style of
symbols (point objects), lines (line objects), regions
(area objects) and text (text objects) can be changed with
the style entries on the Options menu or their toolbox and
menu entry or toolbox icon will display the appropriate
style dialogue. Clicking on the pull-down lists will
display the alternative symbols, line and fill styles,
colours etc. available.
Scope of application of styles
Changes made in the style dialogue box apply:
To select objects on the currently active map window: the
map layer must be editable;
To any objects of the same type (point, line, area or
text) which are drawn until another style change is made.
You can also modify the style of an object, and all
subsequent objects drawn, by clicking the style button on
the object information dialogue.
MapInfo’s behaviour in changing both the style of selected
objects and the default style for that type of
object, is contrary to normal Windows conventions (where
the default style is changed only if no objects are
selected and can be extremely frustrating). It is to be
hoped that this 'feature' will be fixed in a future
Why styles don't change
The style of selected map objects will only
change if they are in the editable layer. Check
that the objects whose style you are trying to change
show editing handles.
If the objects are in the editable layer, check for
style override (page 82). If style override is on for
the layer containing the objects, the objects will display
with the styles specified under style override, whatever
the individual styles applied to the objects. Your style
changes will have been made, but they will only show when
style override is turned off.
Point object style
The Font list allows selection of any of
the Windows fonts installed, including special Maplnfo
fonts. The default is Maplnfo Version 3 compatible
symbols, which is not a True Type font. N in the
font pull-down indicates a null symbol, i.e. no symbol
will plot. Maximum symbol size is 48 point. Minimum size
in the pulldown list is 9 points, but smaller sizes can be
typed in and are generally useful down to about 4 point.
Rotation, Background and Effects are only available for
True Type fonts. Rotation gives the angle of rotation in
an anticlockwise direction. The different
backgrounds (None; Halo; and Border) are exclusive - only
one at a time can be selected - whereas the effects (Drop
Shadow and Bold) can be applied together.
New symbols can be defined through the Symbols
MapBasic application, supplied with Maplnfo, or created as
bitmaps in the CustSymb directory.
Line object style
Line styles are limited to those provided by Maplnfo.
There are a number of conventional cartographic line
styles towards the end of the pull-down list of styles
(shown on right, above), but the paucity of styles and the
inability to create new ones is a problem for cartographic
'N' at the start of the list indicates a null line
style, i.e. no line is drawn. Null lines are particularly
relevant for line styles associated with area object
(region) boundaries (see below) which may not require
Note the line styles with a symbol at each end (arrows or
blobs). These can be useful for drawing in arrows or
emphasising the ends of lines, but the quality of the
arrows is poor and there is no choice of arrow style. A
utility for creating arrows in different styles is
available from the GISNet Maplnfo FIP site
Region object style
Unchecking the box to the left of Background in the Region
Style dialogue makes the fill background transparent, so
that underlying objects can be seen through it. The
pattern shown in the Patterns list is drawn in the
Foreground colour; the spaces between the hatches, dots
etc. are the background.
Note that 'N' in the line style or fill pattern lists
means no line or no rill respectively. No fill is
transparent, so that polygons, rectangles etc. with this
fill style do not obscure underlying objects (even an
apparently empty fill will obscure underlying objects,
because it is a solid fill in the colour white).
Text copied from:
Understanding MapInfo: A Structured
Ian Johnson, 1996
Archaelogical Computing Library
University of Sydney, NSW