Phi Helicopters

For purposes of these tools, a quaternion, q, is just a four element vector where q(1:3) is the "imaginary" or "vector" portion of the hypercomplex number, and q(4) is the "real" or "scalar" portion. Consequently, if q represents a rotation, then: q(1) = v1*sin(phi/2) q(2) = v2*sin(phi/2) q(3) =...

This function generates patch data (faces d-deDUFd-deDt, vertices d-deDUVd-deDt and color data d-deDUCd-deDt) for 3D images. The patches are only generated for the voxels specified by the linear indices in d-deDUINDd-deDt. The variable d-deDUptyped-deDt indicatesthe type of patch:d-de?vd-deOao...

Plot streamlines and pressure coefficent of an unviscious, uncomprimibile,irrotational flow around a cylinder section (r=1) that spins around the z axis (coming out of the xy plane). This result is achieved by superimposition of elementary solution of the potential function PHI, where [Ux , Uy] =...


Platforms: Matlab

This is the source code and script from the case study presented during the Data Analysis Webinar on 4/24/03 (archived at http://www.mathworks.com/cmspro/online/5102/req.jsp?13727). The case study demonstrates how several MATLAB toolboxes can be used together to handle a real-life engineering...


Platforms: Matlab

This software has been realized by Praveen Pilly at the CNS Technology Lab at Boston University (http://techlab.bu.edu/).Attached is the source article and zipped file that contains a MATLAB-based graphical user interface with additional access to the non-directional transient cell equation,...


Platforms: Matlab

call: function to calculate BS call pricecall_vega: BS call vega (i.e. partial derivative of call with respect to vol)Phi: normal cdfPhiPrime: normal pdfimpvol: finds vol given a call pricedemo: a script demonstrating the impvol functiond1 and d2 are auxiliary functionsNOTE: the impvol function...


Platforms: Matlab

It makes visualization of rotation with Euler angles. phi theta psi are changeable. Also it makes automatic conversion to axis-angle form of rotation. Any rotation can be represented as axis of rotation and angle of rotation. See euler_axis_angle_relationship.doc. Push "rules..." button.See also...


Platforms: Matlab

The Ramachandran Plot Explorer really offers something new. The Ramachandran Plot Explorer is designed to make it easy to examine the conformation of a polypeptide - through the interactive Ramachandran plot (?Ya* -?Y? angles) and ?Ya*?-angle tool. Simply click on a residue, then drag the marker...


Platforms: Mac

gOpenMol is a tool for the visualization and analysis of molecular structures and their chemical properties. The program uses Tcl/Tk scripting engine and can thus be easily extended without modifying the kernel code. gOpenMol can also be extended by writing extensions using sharable objects...


Platforms: *nix

CharEntry is a tool for inserting non-ascii characters into text, with particular emphasis on linguistic notation. CharEntry provides charts of the consonants, vowels, and diacritics of the International Phonetic Alphabet as well as chart of precomposed accented characters. Clicking on a...


Platforms: *nix

is a utility for converting an input file in Thesaurus Linguae Graeca (TLG) / Packard Humanities Institute (PHI) representation to Unicode (UTF-8).


Platforms: *nix