Acoustical Surfaces

This package consist of a number of auxiliary functions that are helpful for analysing 1D and 2D signals such as surface profiles and surfaces and images. They are all built upon the built-in MATLAB FFT routine for fast execution and they replicate (when it is existing) the result produced by...

RADIATION HEAT TRANSFER- SHAPE FACTOR CALCULATION (MECHANICAL ENGINEERING) The file, sfactor.m ; (example) xxx = sfactor(a).calculates shape factor between two flat surfaces with arbitrary orientation and location. (sfactor12.m and sfactor16.m are similar to sfactor.m but with 12 and 16...

This is a fast non-iterative ellipse fit, and among fast non-iterative ellipse fits this is the most accurate and robust.It takes the xy-coordinates of data points, and returns the coefficients of the equation of the ellipse: ax^2 + bxy + cy^2 + dx + ey + f = 0,i.e. it returns the vector...


Platforms: Matlab

View factor is a MATLAB function that uses the CDIF (contour double integral formula) to calculates view factors between planar surfaces(polygons), no matter what are the shape and the orientation of the two figures.All you need to enter is the coordinates of the vertices that define the outlines...


Platforms: Matlab

Some optimization problems have very simple surfaces to optimize. The optimizer simply proceeds downhill to the unique minimizer and returns happily - all is good in the world. Sadly, more often the objective function has multiple local minimizers, you as the user provide poor starting values,...


Platforms: Matlab

The code provides base functionality to calculate the wave-functions for hydrogen and visualise those wave-functions using iso-surfaces in 3D. This can be used to explore the spatial nature of the wave-functions.In addition it is easy to calculate something approximating the wave-function of the...


Platforms: Matlab

I created this function to assist in displaying flight test data.It creates a patch and a collection of hg transform objects which allow one to easily update the figure.Also allows the control surfaces to be moved.Bar meters are included to display altitude, Mach number and g's.Typically one...


Platforms: Matlab

This builds a navigation GUI for navigating n-dimensional convex Pareto surfaces interactively. It requires linprog from theoptimization toolbox, but can probably be replaced easily with a free version. The linear programs solved during navigation are very small and easy. It is assumed that all...


Platforms: Matlab

Program FFT2SURF plots double Fourier series representations for several different surfaces. The figures show effects of the number of series terms and use of Lanczos sigma factors to smooth Gibbs oscillations. The Fourier series of a doubly periodic function with periods px and py has the...


Platforms: Matlab

This program calculates view factors and radiative heat transfers between two or many surfaces. Surfaces must be polygons or circles. For each surface, you must enter the parameters relative to their geometry, the emissivity, either the temperature or the radiative balance. For each surface, the...


Platforms: Matlab

FDSURFFT computes fractal dimension (slope) of surface image im and draw rose plots of slope and intercept.


Platforms: Matlab

This zip file contains 2 functions to transform generic (nD) quadratic hyper-surfaces from homogeneous form (that is [x' 1]*E*[x;1]=0) to center form (that is (x'-c')*inv(Q)*(x-c)=1, which is used for example in the ellipsoidal toolbox).Examples:% zero-centered ellipse of semiaxes 1 and 2% center...


Platforms: Matlab

The three-dimensional viewing of MRI images can help understand the position of (double) oblique slices as often used in cardiac MRI.The function returns a figure handle which can be used as input argument to display a second slice in the same figure. the other output is a handle for the slice...


Platforms: Matlab

In material science curved surfaces may be heated due to study thermal flow.Here a simple image is projected on top of the peaks surface and the red are is measured in square pixels. Deaunay is used to create triangles whos area is summed up, if the color criteria is met.


Platforms: Matlab

2-D Propagation code similar to parabolic wave codes but with complete boundary conditions for irregular surfaces. Induced boundary surface currents are retained. Documentation and examples are provided. Basic code structure can be extended to fully 3-Dimensional environments.


Platforms: Matlab

Differences between this and other Matlab-Rubik's codes are that it gives some possibilities for testing combinations (using command line instructions), makes it possible to work with, and solve "full cubes" (where the mid cube orientations count), and it is possible to have surfaces with...


Platforms: Matlab

This is an extension of the 3 linked cross-sections of a volumic data to the time domain. It is invoked command-line through a syntax as simple as 'fn_4Dview(data)' or more elaborated as 'fn_4Dview(Y,'clip',[0 40],'2d','in',2,'time','fifth',1)'.Interesting features are:- mouse-selection of...


Platforms: Matlab

This is a demo version of the programit can find teh intersection of 2 surfaces in exact values, for more details contact me at my email use the file named master


Platforms: Matlab

MouseMotionHandler is a MATLAB class that uses a MATLAB figured-deOaos WindowButtonMotionFcn callback as a hook to extend button motion functionality to all handle graphics child objects of a figure including axes, lines, surfaces uipanels, uicontrols etc.MouseMotionHandler provides an...


Platforms: Matlab

% FUNCTION ZOOM2CURSOR% ZOOM2CURSOR, without arguments, will activate the current axis, create a text box showing the current position of the mouse pointer (similar to pixval), and automatically zoom the image to the location of the cursor as it is moved. The zoomed display dynamically scrolls...


Platforms: Matlab