3D plot of parametric curves (original) (raw)

Scilab 5.3.3

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Scilab help >> Graphics > 3d_plot > param3d1

param3d1

3D plot of parametric curves

Calling Sequence

param3d1(x,y,z,[theta,alpha,leg,flag,ebox]) param3d1(x,y,list(z,colors),[theta,alpha,leg,flag,ebox])

Arguments

x,y,z

matrices of the same size (nl,nc).

Each column i of the matrices corresponds to the coordinates of the ith curve. You can give a specific color for each curve by using list(z,colors) instead ofz, where colors is a vector of size nc. If color(i) is negative the curve is plotted using the mark with idabs(style(i)); if style(i) is strictly positive, a plain line with color idstyle(i) or a dashed line with dash idstyle(i) is used.

theta,alpha

real values giving in degree the spherical coordinates of the observation point. The default values are 35 and 45 degree.

leg

string defining the captions for each axis with @ as a field separator, for example "X@Y@Z".

flag=[type,box]

type and box have the same meaning as in plot3d:

type

an integer (scaling).

type=0

the plot is made using the current 3D scaling (set by a previous call to param3d,plot3d, contour orplot3d1).

type=1

rescales automatically 3d boxes with extreme aspect ratios, the boundaries are specified by the value of the optional argument ebox.

type=2

rescales automatically 3d boxes with extreme aspect ratios, the boundaries are computed using the given data. This is the default value.

type=3

3d isometric with box bounds given by optionalebox, similarily totype=1.

type=4

3d isometric bounds derived from the data, similarilyto type=2.

type=5

3d expanded isometric bounds with box bounds given by optional ebox, similarily totype=1.

type=6

3d expanded isometric bounds derived from the data, similarily to type=2.Note that axes boundaries can be customized through the axes entity properties (see axes_properties).

box

an integer (frame around the plot).

box=0

nothing is drawn around the plot.

box=1

unimplemented (like box=0).

box=2

only the axes behind the surface are drawn.

box=3

a box surrounding the surface is drawn and captions are added.

box=4

a box surrounding the surface is drawn, captions and axes are added.Note that axes aspect can also be customized through the axes entity properties (see axes_properties).This is the default value.

ebox

It specifies the boundaries of the plot as the vector[xmin,xmax,ymin,ymax,zmin,zmax]. This argument is used together with type inflag : if it is set to 1,3 or 5 (see above to see the corresponding behaviour). If flag is missing,ebox is not taken into acount. Note that, when specified, the ebox argument acts on thedata_bounds field that can also be reset through the axes entity properties (see axes_properties). Theebox default value is[0,1,0,1,0,1].

Description

param3d1 is used to plot 3D curves defined by their coordinates x, y andz. Note that data can also be got or modified through the surface entity properties (see surface_properties).

Note that properties like rotation angles,colors and thickness of the plotted curves can also be got or modified through the polyline entity properties (see polyline_properties).

Enter the command param3d1() to see a demo.

Examples

xset('window',20) t=[0:0.1:5*%pi]'; param3d1([sin(t),sin(2t)],[cos(t),cos(2t)],.. list([t/10,sin(t)],[3,2]),35,45,"X@Y@Z",[2,3])

xdel(20); a=get("current_axes"); t=[0:0.1:5*%pi]'; param3d1([sin(t),sin(2t)],[cos(t),cos(2t)],[t/10,sin(t)]) a.rotation_angles=[65,75]; a.data_bounds=[-1,-1,-1;1,1,2]; a.thickness = 2; h=a.children h.children(1).foreground = 3 curve2 = h.children(2); curve2.foreground = 6; curve2.mark_style = 2;

See Also