请问以下这个axis equal 放在哪里？还是换个写法？

Question

mesh(x,y,z1); hold on; mesh(x,y,z2);hold on;mesh(x,y,z3);hold on;mesh(x,y,z4)这个 axis equal 放在哪里？还是换个写法？ 我放在最后面 图是能够画出，但是要报错??? Error using ==> setBad value for axes property: 'ZLim'Values must be increasing and non-NaN.Error in ==> axis>LocSetTight at 319set(ax,'zlim',limits(5:6))Error in ==> axis>LocSetImage at 395LocSetTight(ax);Error in ==> axis>LocSetEqual at 359LocSetImage(ax,pbarlimit);Error in ==> axis at 137LocSetEqual(ax(j),pbarlimit);Error in ==> plotRotate at 177axis equal应该怎么改

Answer 1

解释：matlab函数图象很多时候为了把x和y的信息都表达得充分明显，会使x轴单位的实际长度和y轴单位的实际长度不一样。
有利作用：比如说，y=0.00001*sin（x），系统就会自动拉长y轴来放大变化，方便我们看得清图象的函数变化。axis equal就是取消这种变化。把单位长度都变的一样。这样做的好处就是对于圆来说更像圆，
弊端：但是对于一些变化很微小的函数就不是很直观，例如y=0.00000001* sin（x）看起来就有点像一条直线了

Answer 2

TCH(X,Y,C) adds the "patch" or filled 2-D polygon defined by
vectors X and Y to the current axes. If X and Y are matrices of
the same size, one polygon ("face") per column is added. C
specifies the color of the face(s) ("flat" coloring), or the
vertices ("interpolated" coloring), for which bilinear interpolation
is used to determine the interior color of the polygon.

For both vector or matrix X and Y, if C is a string, each face
is filled with 'color'. 'color' can be 'r','g','b','c','m','y',
'w', or 'k'. If C is a scalar it specifies the color of the
face(s) by indexing into the colormap. A 1x3 vector C is always
assumed to be an RGB triplet specifying a color directly.

For vector X and Y, if C is a vector of the same length, it
specifies the color of each vertex as indices into the
colormap and bilinear interpolation is used to determine the
interior color of the polygon ("interpolated" shading).

When X and Y are matrices, if C is a 1xn, where n is the number
of columns in X and Y, then each face j=1:n is flat colored by the
colormap index C(j). Note the special case of a 1x3 C is always
assumed to be an RGB triplet ColorSpec and specifies the same
flat color for each face. If C is a matrix the same size as X
and Y, then it specifies the colors at the vertices as colormap
indices and bilinear interpolation is used to color the faces.
If C is 1xnx3, where n is the number of columns of X and Y,
then each face j is flat colored by the RGB triplet C(1,j,:).
If C is mxnx3, where X and Y are mxn, then each vertex
(X(i,j),Y(i,j)) is colored by the RGB triplet C(i,j,:) and the
face is colored using interpolation.

PATCH(X,Y,Z,C) creates a patch in 3-D coordinates. Z must be the
same size as X and Y.

PATCH returns a handle to a Patch object. Patches are children
of AXES objects.

The X,Y,C triple (X,Y,Z,C quad for 3-D) can be followed by
parameter/value pairs to specify additional properties of the
Patch. The X,Y,C triple (X,Y,Z,C quad for 3-D) can be omitted
entirely, and all properties specified using parameter/value
pairs.

Patch objects also support data specified using the properties
Faces, Vertices, and FaceVertexCData (see the reference manual
for more information). These properties do not have a convenience
syntax, but may be specified using param-value pairs. Patch
data specified as XData, YData, ZData, and CData is translated
and stored internally as Faces, Vertices, and FaceVertexCData, and
the original matrices are not stored. When GET is used to query
XData, YData, ZData, or CData, the returned value is computed by
translating from Faces, Vertices, and FaceVertexCData.

GET(H), where H is a patch handle, displays a list of patch
object properties and their current values. SET(H) will display
a list of patch object properties and legal property values.

你仔细看看 我觉得你写得不对 函数定义不完全