User`s guide

10-5
Summary New Behavior Compatibility Considerations
contourm(Z,R,V) or
contourm(lat,lon,Z,V),
contourm creates a plot with a
single contour at that level.
V, the contourm function drew no
contour lines, returned an empty
contour matrix, and constructed a
contourgroup with no children.
Parameter
settings
The parameter settings for
contourm and contourfm are
both more selective and more fully
documented. You can set only
the parameters described in the
contourm reference page.
In previous releases, you could set
any valid contourgroup property
(possibly with unexpected results).
Contour level
tag
In R2010b, each contour line has
its Tag property set to a string
representation of its contour level,
preceded by 'contour line:'.
These tags display in the lower
left of the axes when you click on a
contour line.
In previous releases, the tags
contained only the contour level
strings.
Filled area tag In R2010b, each fill polygon (patch)
has its Tag property set to a
string beginning with 'contour
interval:' and followed by its
minimum and maximum levels (as
strings) in square brackets. These
tags display in the lower left of the
axes when you click within a fill
polygon.
In previous releases, the tags in
patches created by contourfm
contained the string 'Cpatches'
and did not display when you
clicked.
AppData and
UserData
Each contour line object now
has a contour Level field in its
AppData property, and the patches
representing fill polygons have
'MinLevel' and 'MaxLevel'
AppData fields. contourm and
related functions no longer set the
UserData property of any graphics
object.
Previously, UserData was set to
the contour level value for each line
and to a minimum contour level
value for each patch. If you have
an application or GUI that checks
UserData values for individual
lines or patches, work with the
getappdata function instead.