MATLAB Central - File Exchange

export_fig

2009-04-11T12:28:01Z

This function saves a figure or single axes to one or more vector and/or bitmap file formats, and/or outputs a rasterized version to the workspace, with the following properties:
   - Figure/axes reproduced as it appears on screen
   - Cropped borders (optional)
   - Embedded fonts (pdf only)
   - Improved line and grid line styles
   - Anti-aliased graphics (bitmap formats)
   - Render images at native resolution (optional for bitmap formats)
   - Transparent background supported (pdf, eps, png)
   - Semi-transparent patch objects supported (png only)
   - RGB, CMYK or grayscale output (CMYK only with pdf, eps, tiff)
   - Variable image compression, including lossless (pdf, eps, jpg)
   - Optionally append to file (pdf, tiff)
   - Vector formats: pdf, eps
   - Bitmap formats: png, tiff, jpg, bmp, export to workspace

This function is especially suited to exporting figures for use in publications and presentations, because of the high quality and portability of media produced.

Note that the background color and figure dimensions are reproduced (the latter approximately, and ignoring cropping & magnification) in the output file. For transparent background (and semi-transparent patch objects), use the -transparent option, and set the axes 'Color' property to 'none' where desired. Pdf, eps and png are the only file formats to support a transparent background, whilst the png format alone supports transparency of patch objects.

When exporting to vector format (pdf & eps), and to bitmap using the painters renderer, this function requires that ghostscript is installed on your system. You can download this from:
http://www.ghostscript.com
When exporting to eps it additionally requires pdftops, from the Xpdf suite of functions. You can download this from:
http://www.foolabs.com/xpdf

Usage examples can be found at:
http://sites.google.com/site/oliverwoodford/software/export_fig

When reporting bugs, please use the 'Contact Author' link on my Author page, rather than pasting the error into the comments - I will respond more quickly, especially if I can email you back.

MATLAB Support Package for Arduino (aka ArduinoIO Package)

2011-07-28T12:42:17Z

Arduino (www.arduino.cc) is a low-cost open-source electronics prototyping platform.

MATLAB Support Package for Arduino (also referred to as "ArduinoIO Package") allows you to communicate with an Arduino Uno or Duemilanove over a serial port. It consists of a MATLAB API on the host computer and a server program that runs on the Arduino. Together, they allow you to access Arduino analog I/O, digital I/O, operate servo motors, read encoders, and even handle dc and stepper motors using the adafruit motor shield, all from the MATLAB command line.

The Support Package also includes Simulink blocks for communicating with the Arduino.

For more information about the Support Package, see:
http://www.mathworks.com/hardware-support/arduino-matlab.html

For Simulink blocks that support code generation, see:
http://www.mathworks.com/hardware-support/arduino-simulink.html

Sample usage:

%-- connect to the board
a = arduino('COM9')

%-- specify pin mode
a.pinMode(4,'input');
a.pinMode(13,'output');

%-- digital i/o
a.digitalRead(4) % read pin 4
a.digitalWrite(13,0) % write 0 to pin 13

%-- analog i/o
a.analogRead(5) % read analog pin 5
a.analogWrite(9, 155) % write 155 to analog pin 9

%-- serial port
a.serial % get serial port
a.flush; % flushes PC's input buffer
a.roundTrip(42) % sends 42 to the arduino and back

%-- servos
a.servoAttach(9); % attach servo on pin #9
a.servoWrite(9,100); % rotates servo on pin #9 to 100 degrees
val=a.servoRead(9); % reads angle from servo on pin #9
a.servoDetach(9); % detach servo from pin #9

%-- encoders
a.encoderAttach(0,3,2) % attach encoder #0 on pins 3 (pin A) and 2 (pin B)
a.encoderRead(0) % read position
a.encoderReset(0) % reset encoder 0
a.encoderStatus; % get status of all three encoders
a.encoderDebounce(0,12) % sets debounce delay to 12 (~1.2ms)
a.encoderDetach(0); % detach encoder #0

%-- adafruit motor shield (with AFMotor library)
a.motorRun(4, 'forward') % run motor forward
a.stepperStep(1, 'forward', 'double', 100); % move stepper motor

%-- close session
delete(a)

Stellaria (Tech Demo) - The best MATLAB shooting game ever

2011-05-14T13:22:05Z

=============================================

Stellaria: A Figure-Based Space Shooting Game

=============================================

Stellari Studio, 2011.

Designed and Programmed by Mingjing Zhang

from

Vision and Media Lab @ Simon Fraser University

* Please note that this is a tech demo and is far from a completed game. *
* All I want to do is to demonstrate what MATLAB is capable of. *
* Stellaria features arcade-style graphics and MIDI music.*

About the Code
--------------

I wrote all code myself except for the midi synthesizer.

I apologize for the for-loop overwhelmed, global variable laden, poorly commented, ill-organized and therefore highly inefficient code.

However this is the best I can do for now.

Installation
------------

Put the folder StellariaTechDemo anywhere you like,
then Add StellariaTechDemo and all its subfolders in the search path list.

!Run stl_StellariaMain to play!

Gameplay
--------

Stellaria is just like the arcade shoot-em-up you have played before, except for the sad music.

Stellaria supports two players.

Each player has 30 lives and 3 bombs.

There are no power-ups, no boss, no score.

There is only 1 stage.

No text information will be displayed on the screen

The game can be slow when there are over 50 objects on the screen (For my i7 2.8GHz + 6 GB RAM +GTX480 computer,
this number could reach over a 100 without any significant frame dropping). Anyway, you need a better-than-average computer to play this game.

Control
-------

Player 1: WSAD - Movement, U - Fire, I - Bomb;
Player 2: DirKeys - Movement, Insert - Fire, Delete - Bomb;
You may skip the opening scene and credits screen by pressing 1 or 2
. They stands for 1 player and 2 players, respectively.

Graphics
--------

Most graphical contents used in this game are the creation of Hamukorosama.
You can find his works at this site:
http://homepage2.nifty.com/hamcorossam/stg_materials.htm
(Japanese)

Music
-----

The background music used in this game are composed by Shi Jin (Chinese: 石进)
His Weblog:
http://blog.sina.com.cn/sjhome
(Chinese)

Toolboxes
---------

The capability of playing midi music is granted by the MIDI synthesizer written by Kenneth Adams, Jr. at GaTech
This synthesizer is available for download at
http://www.prism.gatech.edu/~kadams6/matlab.shtml

The synthesizer comes as a part of Stellaria. You DO NOT need to download it separately.

The synthesizer has been slightly modified by the author of this game.

Inspirations:
---------

The keyboard processing technique used in the Mario Sim v 0.1
by Ryan Kinnett
http://www.mathworks.com/matlabcentral/fileexchange/25568-mario-sim-v0-1

The double-plot star scroll technique employed by Dave's shooter game
by David Buckingham,
http://www.mathworks.com/matlabcentral/fileexchange/31330-daves-matlab-shooter

This game is not intended for commerical purposes and is free for everyone. However, if you decide to use the code

or any graphical or audio materials in your own project, please kindly make sure the original authors (Mingjing Zhang,

Hamukorosama, Shi Jin and Kenneth Adams) are properly accredited.

Contact Info:
-------------
If you have any questions, suggestions, comments or complaints
Please do not hesitate to send me an email:

matthiaszhang@yahoo.com

I'll write back as soon as possible.

Enjoy.

-----------------------

Update Log:

Sep 24, 2012 (V 1.3):
* An App installer is added
* Now the user can gracefully quit the game simply by closing the figure window without causing any error

matlab2tikz

2008-11-07T05:54:22Z

matlab2tikz supports the conversion of most MATLAB figures,
including 2D and 3D plots. For plots constructed with third-
party packages, your mileage may vary.

The workflow is as follows.

   1. Place the matlab2tikz script in a directory where MATLAB can find it.
      (the current directory, for example).
   2. Generate your plot in MATLAB.
   3. Invoke matlab2tikz by
              >> matlab2tikz( 'myfile.tikz' );

The resulting file can be included into any LaTeX document (by \input{myfile.tikz}). Don't forget to add

\usepackage{tikz,pgfplots}

and optionally (as of Pgfplots 1.3)

\pgfplotsset{compat=newest}
\pgfplotsset{plot coordinates/math parser=false}

to the preamble of your LaTeX document.

To specify the dimension of the plot from within the LaTeX document, try

>> matlab2tikz( 'myfile.tikz', 'height', '\figureheight', 'width', '\figurewidth' );

and in the LaTeX source

    \newlength\figureheight
    \newlength\figurewidth
    \setlength\figureheight{4cm}
    \setlength\figurewidth{6cm}
    \input{myfile.tikz}

If you would like to see more information, follow the development, submit a bug, or contribute in any other way, please visit matlab2tikz' web page at https://github.com/nschloe/matlab2tikz .

M-code LaTeX Package

2005-07-12T10:31:45Z

There are many packages out there that do pretty much the same. However, there are also usually many settings and tweaks needed to get it to look just right.

This package saves you from all this hassle — just include it and you're done.

I originally wrote this package for myself to have colourful source code highlighted in LaTeX, looking exactly like in the Matlab editor — being able to just copy-paste the code directly (no pre-treatment with highlight.m or the likes), or simply give a file name and have its contents included and syntax highlighted.

Again, this packages relies on a bunch of other packages (and in particular the listings package for the actual work), but spares you from loads of configurations... So please first check the source code or the configuration options of the packages used if you have any issues.

I've also thrown together a small demo-document (now included) which should give you a quick example on how to actually use the package.

41 Complete GUI Examples

2009-07-27T17:34:33Z

This is a collection of GUIs meant to serve either to answer specific questions about writing GUIs or as a teaching tool to aid in learning how to write MATLAB GUIs without GUIDE. Many of these are inspired directly from the newsgroup.

The questions/files are written in approximate order of complexity, so intermediate users may want to skip the first several files.
The questions answered include:

1.How do I manipulate the strings in a uicontrol? GUI_1, 2, 4, 5, 13, 14, 15, 20, 21, 22, 37
2.How do make a uicontrol invisible/visible? GUI_3, 35 (See also GUI_10 for images)
3.How do I make a multi-line edit box? GUI_4
4.How can I initialize an editbox so that the cursor is blinking at startup? GUI_4, 24, 37
5.How can I let the user of my GUI know his actions are futile (or producing no results)? GUI_5
6.How can I tell which uicontrol is selected e.g., radiobuttons? GUI_6, 8
7.How do I tell how many times a uicontrol has been activated? GUI_7, 19, 28, 32, 33
8.How do I tell which button in a buttongroup is selected? GUI_8
9.How do I let the user know a process is running in the background? GUI_9
10.How can I set an image visible/invisible? GUI_10
11.How can I use a GUI to exit a FOR loop? GUI_11
12.How can I control the mouse pointer with a GUI? GUI_12
13.How do I access the value (current position) of a slider? GUI_13, 16
14.How do I use different colored strings in a listbox? GUI_14
15.What is the difference between 'listboxtop' and 'value' in a listbox? GUI_14
16.How do I make text that can be copied but not changed? GUI_15
17.How can I allow the user of my GUI to set the range of a slider? GUI_16
18.How can I display a digital clock in my GUI? GUI_17
19.How can I use a timer in a GUI? GUI_17
20.How do I use the buttondownfcn on an axes object? GUI_18, 28
21.How do I make a callback talk to another callback? GUI_19
22.How can I get the string from a popup or listbox? GUI_14, 20, 21, 22, 31, 32, 33
23.How can I set the string in a popup or listbox? GUI_21, 22
24.How can I add to the string in a popup or listbox? GUI_22
25.How do I tell which figure/axes was current before my callback executed? GUI_23
26.How do I get data from another GUI? GUI_24
27.How do I make a GUI to open image files only? GUI_25
28.How can I make popup choices mutually exclusive? GUI_26
29.How can I show the current pointer location in axes coordinates? GUI_27
30.How can I use uicontextmenus? GUI_28, 33, 39
31.How do I make my GUI control an axes in another figure? GUI_29, 30
32.What are callback strings? GUI_30
33.How can I make it so that when one of the figures closes, they all close? GUI_24, 29, 30, 41
34.How do I make several uicontrols interact in a more complicated GUI? GUI_31, 32, 33, 41
35.How do I get data from a GUI to the base workspace? GUI_25, 32, 33, 36
36.How can I use a GUI to take a screenshot of my desktop? GUI_34
37.How do I make toggle buttons act like tabbed-panels? GUI_35
38.How do I make a custom dialog box which returns a string to the base workspace? GUI_36
39.How can I make a password editbox that has the ***** symbols? GUI_37
40.How can I use nested function as callbacks? GUI_11, 17, 34, 36, 37, 39, 40, 41.
41.How can I use uiwait in a GUI? GUI_11, 34, 36, 37
42.How do I use JAVA in my GUI? GUI_38
43.How do I force the figure to maintain focus between uicontrol activations? GUI_38
44.How do I save an axes as an image? GUI_39
45.How can I make a simple drawing program? GUI_39
46.How can I set a button's background to match an image? GUI_40
47.How can I save the state of a system of GUIs to use later? GUI_41

I am open to hearing any suggestion as to other questions which could be covered in the collection. Such suggestions need not be basic. Please read the pdf file prior to use. Also the contents.m file contains brief descriptions of each GUI.

Please email me if an error is found, either in the documentation or coding. Thanks.

Image Segmentation Tutorial ("BlobsDemo")

2009-08-27T13:56:27Z

Perfect for the beginner, this demo illustrates simple object detection (segmentation, feature extraction), measurement, and filtering. Requires the Image Processing Toolbox (IPT) because it demonstrates some functions supplied by that toolbox, plus it uses the "coins" demo image supplied with that toolbox. If you have the IPT (you can check by typing ver on the command line), you should be able to run this demo code simply by copying and pasting this code into a new editor window, and then clicking the green "run" triangle on the toolbar.

First finds all the objects, then filters results to pick out objects of certain sizes. The basic concepts of thresholding, labeling, and regionprops are demonstrated with a simple example.

It's a good tutorial for those users new to MATLAB's image processing capabilities to learn on, before they go on to more sophisticated algorithms.

Tested with R2008b through R2011b.

arrow.m

2000-01-14T00:00:00Z

ARROW (5/20/2009) Draw a line with an arrowhead.

ARROW(Start,Stop) draws a line with an arrow from Start to Stop (points should be vectors of length 2 or 3, or matrices with 2 or 3 columns), and returns the graphics handle of the arrow(s). By itself, ARROW will use the mouse to allow selection.

ARROW DEMO & ARROW DEMO2 show 3-D & 2-D demos of the capabilities of ARROW.

ARROW PROPERTIES shows the properties that can be set (length, base angle, tip angle, width, which ends have arrowheads, etc.)

Optical Character Recognition (OCR)

2007-12-31T19:18:05Z

The aim of Optical Character Recognition (OCR) is to classify optical patterns (often contained in a digital image) corresponding to alphanumeric or other characters. The process of OCR involves several steps including segmentation, feature extraction, and classification. This program use Image Processing Toolbox to get it.

For more information, visit: http://www.matpic.com (spanish)
or http://www.eqbyte.com (english)

Simulink Support Package for Arduino Hardware

2013-03-07T18:19:16Z

Installer file for Simulink Support Package for Arduino Hardware. For more details on capabilities for this support package, please visit http://www.mathworks.com/hardware-support/arduino-simulink.html