uneven

Display unevenly distributed data in 2-D and 3-D as ordinary colour-coded, regularly spaced data.

Description

FFGRID and DENSITY display unevenly distributed data in 2-D and 3-D as ordinary colour-coded, regularly spaced data. This is very useful when dealing with data which are difficult to view using plot3 (which, in my experience, is the case with all 3-D data that are not completely smooth).

FFGRID is a Fast `n' Furious way to do the same job that griddata does for you. The difference is that there is no interpolation. Empty points are left empty rather than trying to fill them using neighbouring points. Also, FFGRID has no problem with multiple points that fall in the same grid cell. Data are displayed using PCOLOR unless output arguments are specified, in which case the matrix of (regularly spaced) data is given along with the vectors s specifying x- and y-dimensions.

DENSITY is akin to HIST in that it displays a density distribution, but this time in 2-D rather than 1-D.

BIN is a small M-file that is needed for FFGRID and DENSITY to do the job right.

• MATLAB release: MATLAB 5.2 (R10)

[Charles Holland]

Worked great, except that using pcolor crashes my machine (PC win2000 running MatLab v6.1).

Imagesc works fine

[Amir Ibrahim]

A very usaeful function.
Exactly what I needed.
Matlab should have a similar functionality by default.
REally appreciate the author's effort.

[David Beer]

IT gives me the error message that matrix dimensions must agree, where griddata doesn't.
I was really hoping it would work b/c griddata is so slow

[Mark Ireland]

Exactly what I needed.
Quick and very useful.

[waad subber]

Good Job:) Thanks

[Guillaume]

Hi, do you have some simple example about how to use it ?