DGradient
- Downloads:
- Views:
- Rating:

Gradient along a specified dimension
Y = DGradient(X, Dim, Spacing, Method)
INPUT:
X: Real DOUBLE array, any number of dimensions.
Spacing: Scalar or vector of the length SIZE(X, Dim).
Dim: Dimension to operate on.
Optional, default: 1st non-singelton dimension.
Method: String, order of the applied method for unevenly spaced X:
'1stOrder', faster centered differences as in Matlab's GRADIENT.
'2ndOrder', 2nd order accurate centered differences.
On the edges forward and backward difference are used.
Optional, default: '1stOrder'.
OUTPUT:
Y: Gradient of X, same size as X.
There are a lot of other derivation tools in the FEX. This function is faster (e.g. 25% faster than dqdt and 10 to 16 times faster than Matlab's GRADIENT), works with multi-dim arrays, on a specific dimension only, and can use a 2nd order method for unevenly spaced data.
For vectors or evenly spaced data no temporary memory is needed. Otherwise 1 or 3 temporary vectors of SIZE(X, Dim) are used for the 1st and 2nd order methods.
The C-Mex file must be compiled at first. Pre-compiled files for Win32 can be downloaded at: http://www.n-simon.de/mex
Run the unit-test function uTest_DGradient to check the integrity and measure speed.
Tested: Matlab 6.5, 7.7, 7.8, WinXP, 32bit
Compiler: LCC2.4/3.8, BCC5.5, OWC1.8, MSVC2008
Assumed Compatibility: higher Matlab versions, Mac, Linux, 64bit
Thanks to Robert A. Canfield (central_diff, #12) and Darren Rowland (diffxy, #29312).
Free download from Shareware Connection - Gradient along a specified dimension
Version: 1.0 | Size: 10 KB | Platform: Matlab, Scripts
Released Date: 21-06-2013 | Rating: 0 | Title: DGradient
Author Url: http://www.mathworks.com
Program Info Url: http://www.mathworks.com
Download Url: http://www.mathworks.com/matlabcentral/fx_files/29887/1/DGradient.zip
ScaleTime - ScaleTime - fast linear matrix interpolation
DateStr2Num - DATESTR2NUM - Fast conversion of DATESTR to DATENUM
FilterM - FilterM, FiltFiltM: Fast digital filter
strncmpr - Compare last N chars of strings or cell strings
Patch FILTFILT - If applied to a matrix, the function FILTFILT (Signal Processing Toolbox) calls itself recursively for each column.
SimpleTest
WordPress Auto Poster Plugin
Professional Simulink Audio Equalizer
PHP Print / Echo
Ends Smart Form
Output buffering, and how it can change your life
ScriptCase - PHP Code Generator
Advanced Istaller for Java
Wind Turbine Model
FORMfields - The PHP Framework
C to C++ Converter
C++ Compiler
RTFGen - the PHP RTF generator
Cumulative Mann-Kendall trend test
Affiliate Programs
Animation
Auctions
Audio Systems
Banner Rotation
Blog
Bulletin Boards & Forums
Business & Enterprise
Buttons
Calendars & Events
Charts & Graphs
Chat
Classified Ad Managers
Communication
Ui Gradient Ex
Gradient Java
Gradient Images
Wallpaper Gradient
Gradient Html
Microsoft Outlook 2000 OST Integrity Check Tool - You create an offline folder (.
Mp3 Speed Accelerator - Mp3 Speed Accelerator enables you to speed up your audio files - mp3 files, ogg files and other formats. It can also rip audio track from video files and speed them up. Super easy to use, supports batch conversion. Converts the files very quickly.
CYPHER MILLENIUM - 6 Top-algorithms; encodes files and mail; Digital Signature; Integrity-Check using SHA256; SecretKeys expansion and pre-encoding; Wipe-File Module, Auto-Encode, Paranoia Keyboard(c) and MUCH MORE!
DupExplorer - Need a simple, "just-click-it" type of duplicate files and folders finder solution? Check out DupExplorer, one of the easiest and most straightforward solutions available. Smart comparison algorithm with a wide variety of options. Free trial.
CryptaPix - CryptaPix is an image file management and encryption program for Windows. Organize, print and secure your digital photos and downloaded image files. Resize, rotate, crop, and remove red-eye from photographs. Create standalone slideshows. Much more.
Shareware Connection periodically updates pricing and software information of 'DGradient' from company source 'Jan Simon' , so some information may be slightly out-of-date. You should confirm all information before relying on it. Software piracy is theft, Using 'DGradient' crack, password, serial numbers, registration codes, key generators is illegal and prevent future development of DGradient.
Voila - Mac users have never felt much hassle as far as image editing goes, given the fact Apple itself offers two compelling image editing suites. However, serious users may find the inbuilt screen capturing options basic, the fact they are much ahead ...
Norman Antivirus - There is hardly any computer user who does not require protection from various types of malware and internet based threats these days. Instances of malware creators and hackers breaking into top corporate firms and celebrity websites can send a ...
IDrive Classic - For every type of computer user, backing up data has become near compulsory. Apart from data loss caused by hardware snags, you cannot rule out the risk of data loss caused by malware attacks. That explains why millions of PC users back up their ...
Backup Dwarf Home Edition - Making backups of data and media content has become extremely important for computer users nowadays. Owing to hardware failure, you may end up losing gigabytes of precious data. Besides, you may not want to leave sensitive data accessible to all ...
Dragon NaturallySpeaking Standard - No matter what type of computer you use, it becomes necessary to use keyboard for typing. This is the case with average home users as well as network administrators working in professional setups. Would not it be nice if you could give your hands ...
Stellar Insta Backup - Data Backup Software - Taking backup of data stored in your PC is quite essential these days, given the fact average PC users deal with tons of data and hardware failure or OS corruption can happen. However, it is also necessary that you pick the right software for ...
ProAnimator - In Post production setups and 3D animation studios, using specialized CG and special effects app becomes a necessity. ProAnimator is a feature rich 3D design application targeted at motion graphics sector. It is ideal when you want to add some ...
Perfect Photo Suite Premium Edition - For comprehensive image editing and web designing, millions of professionals use Adobe’s powerhouse and industry leading app, namely Photoshop. While Photoshop continues to be the darling of millions for advanced image retouching and ...
Stellar Speedup Mac - While Macintosh computers are known for their stellar speed and multitasking prowess they also become subjected to pitfalls of usage. After prolonged use, junk files pile up and bits of installed apps remain scattered on the hard disk. These, ...
Movavi Video Suite - Video recording has become accessible to the mass owing to advancement of technology and advent of handheld devices like tablets and phone with such features. Whether you use a camcorder or use an Android phone, shooting 1080p HD video is pretty ...