Discontinuities

Maple is a great tool for symbolic manipulation and is also very smart at plotting expressions, handling discontinuities,etc.However the plot customization and export possibilities are very primitive. Also, often I want to superimpose Maple plots with other data. This is very clumsy to handle in...


Platforms: Matlab

Program FFTSIGMA plots Fourier series representations with sigma approximation. 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 periodic function with period px has the approximate form: f(x) = sum(...


Platforms: Matlab

Some curve fitting or smoothing tools can benefit from knowledge of the noise variance to expect on your data. Kalman filters use this information, also some spline fitting tools. So I wrote a function to extract the noise variance from a signal vector. It also works on any specified dimension of...


Platforms: Matlab

Suppose that you have a signal Y (Y can be a time series, a parametric surface or a volumetric data series) corrupted by a Gaussian noise with unknown variance. It is often of interest to know more about this variance. EVAR(Y) thus returns an estimated variance of the additive noise.EVAR provides...


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

The Cluster Reinforcement phase advances cluster separation in a self-organizing map (SOM) by strengthening cluster boundaries in a data-driven manner. SOM is a self-organized projection of high dimensional data onto a typically two dimensional (2D) feature map, wherein vector similarity is...


Platforms: Matlab

In a nutshell the Sylfid-f2 plug-in computes the propagation of the waves on the strings and converts them to sounds. The Sylfid-f2 plug-in is based on the same technology as Sylfid-f1 but it does not have all the complex tuning options of Sylfid-f1. Sylfid-f2 has one single type of hammer, and...


Platforms: Mac