MATLAB Examples

slope2 documentation

The slope2 function returns magnitudes of slope of a surface.

Contents

Syntax

slope = slope2(x,y,z)
slope = slope2(dx,dy,z)
slope = slope2(...,'deg')

Description

slope = slope2(x,y,z) returns a gridded local slope field for the surface z. The inputs x and y can be either vectors corresponding to the dimensions of z or a meshgrid of vectors corresponding to the dimensions of z. This function does not require x spacing to equal y spacing, however, it does assume uniform spacing in x and uniform spacing in y.

slope = slope2(dx,dy,z) specifies x and y spacing if dx and dy are scalars.

slope = slope2(...,'deg') returns slope in degrees. Default output is radians.

Example

Here's a simple example of getting the 2D slope field in degrees:

% Load some sample data:
[X,Y,Z] = peaks(1000);
Z = Z/5;

% Calculate local slopes:
sl = slope2(X,Y,Z,'degrees');

% Plot surface slopes:
surf(X,Y,Z,sl)
shading flat
cb = colorbar;

% Make it pretty:
ylabel(cb,'local slope (degrees)')
camlight
axis tight
material dull
view(-16,38)

Author Info

This function was written by Chad A. Greene of the University of Texas Institute for Geophysics, July 2016.