怎样获得坐标轴axis 的最大值(xmax)和最小值(xmin)？

axesH=axes;
get(axesH)
ActivePositionProperty = outerposition
ALim = [0 1]
ALimMode = auto
AmbientLightColor = [1 1 1]
Box = off
CameraPosition = [0.5 0.5 9.16025]
CameraPositionMode = auto
CameraTarget = [0.5 0.5 0.5]
CameraTargetMode = auto
CameraUpVector = [0 1 0]
CameraUpVectorMode = auto
CameraViewAngle = [6.60861]
CameraViewAngleMode = auto
CLim = [0 1]
CLimMode = auto
Color = [1 1 1]
CurrentPoint = [ (2 by 3) double array]
ColorOrder = [ (7 by 3) double array]
DataAspectRatio = [1 1 1]
DataAspectRatioMode = auto
DrawMode = normal
FontAngle = normal
FontName = Helvetica
FontSize = [10]
FontUnits = points
FontWeight = normal
GridLineStyle = :
Layer = bottom
LineStyleOrder = -
LineWidth = [0.5]
MinorGridLineStyle = :
NextPlot = replace
OuterPosition = [0 0 1 1]
PlotBoxAspectRatio = [1 1 1]
PlotBoxAspectRatioMode = auto
Projection = orthographic
Position = [0.13 0.11 0.775 0.815]
TickLength = [0.01 0.025]
TickDir = in
TickDirMode = auto
TightInset = [0.0392857 0.0404762 0.00892857 0.0190476]
Title = [153.002]
Units = normalized
View = [0 90]
XColor = [0 0 0]
XDir = normal
XGrid = off
XLabel = [154.001]
XAxisLocation = bottom
XLim = [0 1]
XLimMode = auto
XMinorGrid = off
XMinorTick = off
XScale = linear
XTick = [ (1 by 11) double array]
XTickLabel = [ (11 by 3) char array]
XTickLabelMode = auto
XTickMode = auto
YColor = [0 0 0]
YDir = normal
YGrid = off
YLabel = [155.001]
YAxisLocation = left
YLim = [0 1]
YLimMode = auto
YMinorGrid = off
YMinorTick = off
YScale = linear
YTick = [ (1 by 11) double array]
YTickLabel = [ (11 by 3) char array]
YTickLabelMode = auto
YTickMode = auto
ZColor = [0 0 0]
ZDir = normal
ZGrid = off
ZLabel = [156.001]
ZLim = [0 1]
ZLimMode = auto
ZMinorGrid = off
ZMinorTick = off
ZScale = linear
ZTick = [0 0.5 1]
ZTickLabel =
ZTickLabelMode = auto
ZTickMode = auto

BeingDeleted = off
ButtonDownFcn =
Children = []
Clipping = on
CreateFcn =
DeleteFcn =
BusyAction = queue
HandleVisibility = on
HitTest = on
Interruptible = on
Parent = [1]
Selected = off
SelectionHighlight = on
Tag =
Type = axes
UIContextMenu = []
UserData = []
Visible = on

属性中并无xmin　
首先应先获取xlim，再取xmin 和xmax