hist3d

3D representation of a histogram

Calling Sequence

hist3d(mtx,[theta,alpha,leg,flag,ebox])
hist3d(mtx,<opt_args>)
hist3d(list(mtx,x,y),[theta,alpha,leg,flag,ebox])
hist3d(list(mtx,x,y),<opt_args>)

Arguments

:mtx matrix of size (m,n) defining the histogram

mtx(i,j)=F(x(i),y(j)), where x and y are taken as 0:m and 0:n.

: :list(mtx,x,y) where mtx is a matrix of size (m,n)defining the

histogram mtx(i,j)=F(x(i),y(j)), with x and y vectors of size (1,m+1) and (1,n+1).

: :<opt_args> This represents a sequence of statements `key1=value1,

key2=value2` ,... where key1, key2,... can be one of the following: theta, alpha,leg,flag,ebox. See plot3d.

: :theta,alpha,leg,flag,ebox see plot3d. :

Description

hist3d represents a 2d histogram as a 3D plot. The values are associated to the intervals [x(i) x(i+1)[ X [y(i) y(i+1)[ .

Enter the command hist3d() to see a demo.

Sample

Examples

hist3d(10*`rand`_(10,10));

Z = `zeros`_(100,5);
A = `abs`_(`rand`_(40,5));
Z(1:40,:) = A;
`scf`_();
hist3d(Z);

Index = `find`_(Z==0);
Z(Index) = %nan;
`scf`_();
hist3d(Z);

A = `abs`_(`rand`_(10,5));
Z(91:100,:) = A;
`scf`_();
hist3d(Z);

See Also

• histplot plot a histogram
• plot3d 3D plot of a surface