.:. Matlabber .:. Another Matlab, vba, LaTeX and Mac OS X Blog

Important! New domain

2009-02-13T20:52:00.001+01:00

Dear Matlabber readers,

now i'm not posting on matlabber anymore. I have started to use my own domain, opensource-ideas.com to post my thoughts and ideas about matlab, vba, LaTeX, mac and all this stuff that just comes to my mind and i want to get rid of. Please feel free to leave me a message anytime you wish.

You can subscribe to the new feed right here!

thank you very much!

babouyes

imovie 09 can import movies directly from my Sony DSC-H5

2009-02-08T20:02:00.002+01:00

Juhuuu i have been waiting for this feature. In fact, i was very disapointed imovie 08 could not handle with my mpeg movies (Sony DSC-H5). Read the discussion at the apple forums here for more information.
But now this is over... and i'm happy! that's why i'm posting this :-D

have a while

spanningsync is better than me.com

2009-02-08T14:05:00.003+01:00

If you like ical and you'll like to use it online, give spanningsync a try. i use it to sync my ical to google calendar (bidirectionall!!!) and let google sms me for free! Spanning Sync costs only 25 u$ a year. give it a try:

exclude your idisk from time machine backups

2009-02-08T13:59:00.003+01:00

Why?

it is allready backed up at me.com
every single change you make on your idisk makes time machine to backup the whole image.
why not?

to do that, just exclude the folder ~/Library/FileSync in the Time Machine preferences.

have a while!

see file size as picture

2009-02-07T14:08:00.003+01:00

Some years ago, i used kde with linux. a cool feature of konqueror was the posibility to show a specific folder as a graphic. the bigger the files, the bigger the area in the graphic. looking for a aplication like this for mac i have found disk Inventory X.

i really like this app, but i haven't seen any updates for a while. i hope the project is not dead.
enjoy it!

a good way to save space in your time machine disk

2009-02-07T13:43:00.003+01:00

Hi there, like every mac os x - leopard user in the world should do, i use time machine. this great program let's you automate your backups. it is easy to configure, just plug an external drive, confirm and enjoy.
For people trying to optimize the space in the time machine disk there are some important things regarding some folders that are good to exclude from the backups. I have found this information from this blog. Here they are:

/Applications
/Users/[user]/Library/Caches
/Library/Caches
/Users/[user]/Downloads
/Users/[user]/.Trash
/.Trashes
/Library/Audio
/Users/[user]/Music/iTunes/iTunes Music/Podcasts
/Users/[user]/Library/Mail Downloads

I exclude this folders, because this information does not hurt if it disappears. please read this blog for more explanation.

now writing about mac os x

2009-02-07T13:40:00.003+01:00

Hi people, since i own a mac i thought to start writing about interesting things around Mac os X. Please see the tag mac for all my postings in the mac category.

A Pedagogical Tool for Fourier Transforms

2009-02-03T09:38:00.002+01:00

Loren writes in her blog:

I recently attended the DSP Workshop sponsored by the IEEE Signal Processing Society. It focues on both signal processing and signal processing education. I spoke to a lot of the attendees. Some of the professors and instructors mentioned how important it is to teach the basics solidly first, before going into more depth. If the students don't get the fundamentals, then going further doesn't help.

Please visit her blog for further information

matlab coding best practices

2009-01-28T11:30:00.004+01:00

here are some tips and tricks for all of you working with matlab.

http://blogs.mathworks.com/pick/2009/01/16/avoiding-coding-pitfalls/

placing text on figures

2009-01-28T11:25:00.001+01:00

This posting is very cool. i have been looking for something linke this the other day...

take a look at the posting here.

New Postings

2009-01-28T11:20:00.002+01:00

Hi people,

i'm starting a new project right now, where i am going to implement a battery simulation for electric vehicles using matlab and simulink.

The best part: you can expect to read more about the project and the matlab/simulink related "lessons learned" here in the future.

until then,

babouyes

Increase speed and debug Simulink modells

2008-12-04T14:19:00.001+01:00

In this posting, seth explains how does the Simulink modell advisor function. You can

find the function under Tools -> Model Advisor:

breakplot

2008-12-04T14:15:00.003+01:00

Wow!!!

The breakplot funktion as explained in this blog, can be used to break a plot in two, if your data has different ranges... take a look at the blog posting for more information and pictures.

Cool smooth plots with matlab

2008-09-05T12:55:00.002+02:00

i have these pictures from Duog's blog:

Not smooth:Smooth:
More Information at Duog's blog

Jiro’s live seminar. Complete Video for download

2008-09-05T12:53:00.001+02:00

Jiro made a good video seminar on matlab. You can download a high res. video here:
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=21029&objectType=FILE

batch proces picture files in matlab

2008-08-01T09:45:00.005+02:00

I have discovered a very good posting in a mathworks blog.

Here you'll find information about the question "How do I process a set of image files in a directory?"

Have a while

advanced way to export figures using hgexport with matlab

2008-07-30T14:10:00.004+02:00

i will explain how to export figures to a file using hgexport with matlab.
here is how:
first you need to create the figure:

h.figure = figure
clf
position = get(gcf,'Position');
set(h.figure,'Color','w',...
'PaperPositionMode', 'auto', ...
'Units','in','Position',[position(1:2) 6 2.5 ],...
'PaperPosition',[0.25 0.25 6 2.5])

then, plot the figure. use all the commands you like, like plot, stairs and subplot...
at the end, export the figure using hgexport:

myStyle = hgexport('factorystyle');
myStyle.Format = 'png';
myStyle.Width = 6;
myStyle.Height = 2.5;
myStyle.Resolution = 300;
myStyle.Units = 'inch';
myStyle.FixedFontSize = 12;
hgexport(h.figure,'fileout.png',myStyle,'Format','png')

with Width and Height you can control the size of the file in inch (units).

about renderers and exporting figures

2008-07-22T10:30:00.003+02:00

Today i was having trouble exporting a figure using the opengl renderer (default for surfaces). To see which renderer a figure is using, use this command:

get(gcf,'Renderer')

The solution was to change the renderer to z-buffer. To do so, just use this command:

set(gcf,'Renderer','zbuffer')

This was necessary to export my carpetplots using the command:

myStyle = hgexport('factorystyle');
myStyle.Format = 'png';
myStyle.Width = 6;
myStyle.Height = 4;
myStyle.Resolution = 300;
myStyle.Units = 'inch';
myStyle.FixedFontSize = 12;
hgexport(h.fig,'filename.png',myStyle,'Format','png')

See my other posts to know more about the carpetplot function.

Libraries in Simulink -

2008-07-21T08:01:00.002+02:00

It is very important to use libraries in simulink if you have peaces of code (or subsystems) that repeats over a modell or even more. Take a look at this posting from Seth, and learn how to create and use libraries in simulink.

Saving figures from the command line in Matlab

2008-07-17T10:23:00.003+02:00

In the documentation of the function saveas you can read, that there is an alternative using the gui: file -> save as....

for me, this 2 methods did a different grafic, because of the different resolution used to export the figure.

There is an article in the mathworks technical solutions that handles this, but i was unable to create a grafic and save a file that looks exaclty as the plotted figure.

Save Time writing M-Functions in Matlab

2008-07-11T08:38:00.004+02:00

If you usually write m-Functions, you can consider using Templates to save time. In this blog you can find a small tutorial on how to use templates.

The time you need to write a new function, you just open a "new function M-File" (see picture above).

matlab and memory

2008-07-08T09:16:00.001+02:00

here is some interesting information about matlab and memory allocation. if you get the error "out of memory", you should read this article.

About Algebraic Loops

2008-07-04T08:39:00.002+02:00

There is a new posting from Seth about algebraic loops in simulink which ich found very interesting. have a look at the original posting here.

Some cool matlab plots

2008-06-30T10:42:00.003+02:00

wow, today i took a look at flickr while i was searching for cool matlab plots.
Just take a look at this:You can find more in Arenamontanu's matlab pictures at flickr

tips how to use simulink better - Part 2

2008-06-26T07:55:00.004+02:00

some days ago i posted about how to use simulink better. Now there is more information from Set. You can find the new posting on how to use simulink better and faster here.
Here are some of the pictures of the original post: