User`s guide

R2006b
18-4
• For geostruct input, an hggroup object is constructed; its handle is returned instead of
an array of handles to map graphic objects:
• For polygon geostructs, map graphics polygon objects are still constructed, but
become children of the hggroup.
• For point, multipoint, and line geostructs, the children of the hggroup are ordinary
line objects; map graphics objects are no longer constructed.
In both cases each child of the hggroup, rather than each element in an array of
handles, corresponds to a distinct feature in the geostruct.
Handles Returned for Graphic Objects
• Geostruct inputs result in an hggroup handle containing either line objects (for point,
multipoint, and line inputs) or modified patch objects (for polygon inputs) as their
children.
• Coordinate arrays (x,y pairs) displayed as lines now result in ordinary line objects.
• Geostructs containing lines result as ordinary line objects within hggroups.
New Warnings Issued
• mapshow and geoshow now warn when given a geostruct within which the Geometry
field differs from a specified 'DisplayType' parameter.
• mapshow will warn if it is given a geostruct containing Lat and Lon fields instead of X
and Y fields.
• geoshow will warn if it is given a geostruct containing X and Y fields instead of Lat
and Lon fields.
geoshow Supplies Default Projection
geoshow now projects vector and raster inputs using a default projection (Plate Carree)
if the parent axes is not a map axes. The axes itself is unchanged (it is not modified to
become a map axes), but the scale factor of the projection is set such that latitudes and
longitudes in degrees can be read directly from the axes ticks and grid lines.
Duplicate Parameter/Value Pair Inputs Allowed
mapshow no longer errors or warns if given duplicate Parameter/Value pair inputs; in
such circumstances, mapshow now uses the last value (even with SymbolSpecs)
geoshow Supports True Surface Display