isosurface

isosurface 是MATLAB中繪製三維隱函式圖像的一個函式工具。

基本介紹

• 中文名：isosurface
• 類型：一個函式工具
• 含義：MATLAB中繪製三維隱函式圖像
• 意義：教育

函式說明

MATLAB 2013b版本中給出的isosurface的函式說明

isosurface Isosurface extractor.

FV = isosurface(X,Y,Z,V,ISOVALUE) computes isosurface geometry for

data V at isosurface value ISOVALUE. Arrays (X,Y,Z) specify the points

at which the data V is given. The struct FV contains the faces and

vertices of the isosurface and can be passed directly to the PATCH

command.

FV = isosurface(V,ISOVALUE) assumes [X Y Z] = meshgrid(1:N, 1:M, 1:P)

where [M,N,P]=SIZE(V).

FV = isosurface(X,Y,Z,V) or FV = isosurface(V) selects an

isosurface value automatically using the histogram of the

data.

FVC = isosurface(..., COLORS) interpolates the array COLORS onto

the scalar field and returns the interpolated values in

facevertexcdata. The size of the COLORS array must be the same

as V.

FV = isosurface(..., 'noshare') does not attempt to create

shared vertices. This is faster, but produces a larger set of

vertices.

FV = isosurface(..., 'verbose') prints progress messages to the

command window as the computation progresses.

[F, V] = isosurface(...) or [F, V, C] = isosurface(...)

returns the faces and vertices (and facevertexcdata) in

separate arrays instead of a struct.

isosurface(...) With no output arguments, a patch is created

into the current axes with the computed faces and vertices.

If no current axes exists, a new axes will be created with

a 3-D view and appropriate lighting.

相關內容

Example 1:

[x y z v] = flow;

p = patch(isosurface(x, y, z, v, -3));

isonormals(x,y,z,v, p)

set(p, 'FaceColor', 'red', 'EdgeColor', 'none');

daspect([1 1 1])

view(3)

camlight; lighting phong

Example 2:

[x y z v] = flow;

q = z./x.*y.^3;

p = patch(isosurface(x, y, z, q, -.08, v));

isonormals(x,y,z,q, p)

set(p, 'FaceColor', 'interp', 'EdgeColor', 'none');

daspect([1 1 1]); axis tight;

colormap(prism(28))

camup([1 0 0 ]); campos([25 -55 5])

camlight; lighting phong