cgi.pm functionss和 subrouti...

DATE_SUB(curdate(), INTERVAL 1 MONTH); : DATE_SUB&&&Date Time Functions&&&MySQL Tutorialmysql&
mysql& select DATE_SUB(curdate(), INTERVAL 1 MONTH);
+---------------------------------------+
| DATE_SUB(curdate(), INTERVAL 1 MONTH) |
+---------------------------------------+
+---------------------------------------+
1 row in set (0.00 sec)
14.12.DATE_SUB14.12.1.14.12.2.14.12.3.14.12.4.14.12.5.14.12.6.14.12.7.DATE_SUB(curdate(), INTERVAL 1 MONTH);14.12.8.14.12.9.14.12.10.14.12.11.14.12.12.14.12.13.14.12.14.14.12.15.14.12.16.14.12.17.14.12.18.14.12.19.14.12.20.14.12.21.14.12.22.14.12.23.14.12.24.14.12.25.14.12.26.14.12.27.14.12.28.14.12.29.
&|&Email:info &|&& Demo Source and Support. All rights reserved.DATE_SUB(curdate(), INTERVAL 1 DAY); : DATE_SUB&&&Date Time Functions&&&MySQL Tutorialmysql&
mysql& select DATE_SUB(curdate(), INTERVAL 1 DAY);
+-------------------------------------+
| DATE_SUB(curdate(), INTERVAL 1 DAY) |
+-------------------------------------+
+-------------------------------------+
1 row in set (0.00 sec)
14.12.DATE_SUB14.12.1.14.12.2.14.12.3.14.12.4.14.12.5.DATE_SUB(curdate(), INTERVAL 1 DAY);14.12.6.14.12.7.14.12.8.14.12.9.14.12.10.14.12.11.14.12.12.14.12.13.14.12.14.14.12.15.14.12.16.14.12.17.14.12.18.14.12.19.14.12.20.14.12.21.14.12.22.14.12.23.14.12.24.14.12.25.14.12.26.14.12.27.14.12.28.14.12.29.
&|&Email:info &|&& Demo Source and Support. All rights reserved.subvolume (MATLAB Functions)
Extract subset of volume data set
[Nx,Ny,Nz,Nv] = subvolume(X,Y,Z,V,limits)
[Nx,Ny,Nz,Nv] = subvolume(V,limits)
Nv = subvolume(...)
Description
[Nx,Ny,Nz,Nv] = subvolume(X,Y,Z,V,limits) extracts a subset of the volume data set V using the specified axis-aligned limits. limits = [xmin,xmax,ymin, ymax,zmin,zmax] (Any NaNs in the limits indicate that the volume should not be cropped along that axis).
The arrays X, Y, and Z define the coordinates for the volume V. The subvolume is returned in NV and the coordinates of the subvolume are given in NX, NY, and NZ.
[Nx,Ny,Nz,Nv] = subvolume(V,limits) assumes the arrays X, Y, and Z are defined as [X,Y,Z] = meshgrid(1:N,1:M,1:P) where [M,N,P] = size(V).
Nv = subvolume(...) returns only the subvolume.
This example uses a data set that is a collection of MRI slices of a human skull. The data is processed in a variety of ways:
The 4-D array is squeezed () into three dimensions and then a subset of the data is extracted (subvolume).
The outline of the skull is an isosurface generated as a patch (p1) whose vertex normals are recalculated to improve the appearance when lighting is applied (, , ).
A second patch (p2) with interpolated face color draws the end caps (, ).
The view of the object is set (, , ).
A 100-element grayscale colormap provides coloring for the end caps ().
Adding lights to the right and left of the camera illuminates the object (, ).
D = squeeze(D);
[x,y,z,D] = subvolume(D,[60,80,nan,80,nan,nan]);
p1 = patch(isosurface(x,y,z,D, 5),...
&&&&&'FaceColor','red','EdgeColor','none');
isonormals(x,y,z,D,p1);
p2 = patch(isocaps(x,y,z,D, 5),...
&&&&&'FaceColor','interp','EdgeColor','none');
view(3); daspect([1,1,.4])
colormap(gray(100))
lighting gouraud
for related functions
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