### Highlights from PLOT4

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# PLOT4

### Christophe Lauwerys (view profile)

22 Mar 2006 (Updated )

Plot colored lines and points in 3-D space

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Description

PLOT4 Plot colored lines and points in 3-D space

PLOT3(x,y,z,c), where x, y, z and c are four vectors of the same length N, plots a line in 3-space through the points whose coordinates are the elements of x, y and z, colored according to the values in c. The line consists of N-1 line segments.

Various line types, plot symbols and colors may be obtained with PLOT3(X,Y,Z,s) where s is a 1, 2 or 3 character string made from the characters listed under the PLOT command.

Example: A helix:

t = 0:pi/50:4*pi;
plot4(sin(t),cos(t),t.^2,t,'.-');

PLOT4 returns a column vector of handles to lineseries objects, one handle per line segment.

MATLAB release MATLAB 7.0.4 (R14SP2)
24 Jun 2010 Christian

### Christian (view profile)

Hey! Got a problem.
I have created a [X,Y,Z]=meshgrid(x,y,z) for my computed data corresponding to the x,y,z. lets say we have c(x,y,z)=data in a loop.
No i wanna distinguish the data field into a stable data and unstable data. So I want to plot in one plot the data points with a value of less or equal 1. I thought about setting it NaN case 1 and the other way round. But got an error msg.

Help is very welcome.

Greetz Chris

Comment only
13 Oct 2008 WaiChing Sun

very easy to use and understand. Thanks.

05 Apr 2006 liya yu

code is easy to be understand.
some useful commands