Data Conversion - video

Practical example: Setting transparency on a patch

Wed, 21 Nov 2007 19:14:11 +0000

First, be sure to check out the new home of LazyWeb. We had three of the challenges closed, but there are three still open. We are sending out MATLAB prize packages to all that solved a challenge, and look forward to sending out more as the rest are tackled. Here is a three and [...]

Practical example: Algorithm development for making colormaps

Thu, 15 Nov 2007 19:57:36 +0000

In a recent post, I mentioned LazyWeb It worked better than I expected. Matt posted some code that I requested that will highlight a line when you click on it. This works exactly as hoped. Thanks Matt, your MATLAB T-shirt has been shipped to thank you for your effort. Ned thought this [...]

Mash-up with text message and password obscuring

Thu, 08 Nov 2007 14:53:13 +0000

One of the purposes of MATLAB Central is to encourage collaboration and code sharing in the MATLAB community. I was overjoyed when I was alerted to this new file on the Exchange. Basically, Robert was inspired by two recent Blog posts that obscure passwords in a GUI and that allow you to send [...]

Advanced MATLAB: Surface plot of nonuniform data

Fri, 02 Nov 2007 12:30:03 +0000

Two minute video shows how to fit a surface to nonuniform data. Real data is not always on a nice X,Y grid, but the MATLAB commands SURF and MESH expect them to be. GRIDDATA and MESHGRID help to fix this. Video Content Find the files here. PodCast here Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/

MATLAB Basics: GUI input validation

Tue, 30 Oct 2007 16:28:43 +0000

Two minute video shows how to validate GUI input. This makes sure that user input will not break your code. This example makes sure that the edit box value is not greater than twelve. This technique can be used for many different tests. Video Content Find the files here. Other videos have been [...]

MATLAB Basics: Linearly spaced vectors

Fri, 26 Oct 2007 12:50:56 +0000

When I look at code written by new users, sometimes, I will see code like this: a = [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]; There is an easier way: a = 1:13; This three minute video shows how to use commands like linspace and the colon operator to make vectors [...]

MATLAB Basics: Getting started from Excel

Thu, 18 Oct 2007 19:21:39 +0000

This is one of a series of videos covering MATLAB basics. It is meant for the new MATLAB user. This video covers how to use the import wizard to bring in files, and then use the plot tools to customize a graphic. Finally, the “save as” feature is used to get a .jpg Video Content Find [...]

MATLAB Basics: Setting a background image for a GUI

Tue, 16 Oct 2007 20:28:20 +0000

I recently got a question in my inbox asking how to set the background image for a GUI. This is done by creating an axes in the GUI and putting an image in it. Any UICONTROLs that you put on the GUI will appear over the image. See this video for the details: Video [...]

Using the clipboard from a GUI

Fri, 12 Oct 2007 17:57:38 +0000

Many of you have surely noticed that this blog took a sharp turn towards video content since I moved to the Advanced Support Group at the MathWorks in May. With all these videos, I have had to get organized. Most of that organization came by way of MATLAB scripts and GUIs. One [...]

MATLAB Basics video: Gallery of surface plots

Wed, 10 Oct 2007 19:49:42 +0000

This is one in a series of videos covering MATLAB basics. It is meant for the new MATLAB user. This video covers how a variety of visualizations that are available in MATLAB for surfaces. Video shows how to change shading to get nice looking surfaces. Find the files here. Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/ Other MATLAB Basics posts [...]

MATLAB Basics video: Using NaN as placeholder data in graphics

Mon, 08 Oct 2007 17:19:22 +0000

This is one in a series of videos covering MATLAB basics. It is meant for the new MATLAB user. This video covers how to uses NaN as placeholder data when plotting data so you can leave a gap where there is no data to plot. Find the files here. Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/ Other MATLAB Basics posts [...]

Cool feature: Run configurations

Tue, 02 Oct 2007 13:12:49 +0000

This cool feature will be useful to many MATLAB users that write functions and want an easy way to test them in multiple configurations. I like to hit F5 to save and run a script, but in the past if you had a function, you could not do this since you usually need to [...]

Expanding the GUI to do calculations on the data from Excel

Fri, 28 Sep 2007 13:35:52 +0000

Last month we covered a lot of ground in making a GUI that would read and display Excel data (click here to see the original post). Since those videos were originally posted, I have gotten quite a few requests to expand the GUI to do some analysis. This video shows how I was [...]

MATLAB Basics video: UIGETFILE for selecting a file in a script, function or GUI

Thu, 27 Sep 2007 20:00:52 +0000

This is one in a series of videos covering MATLAB basics. It is meant for the new MATLAB user. This video covers how to use UIGETFILE to make it easier to select a file from a script, function or GUI. Video Content Find the files here. Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/ Other MATLAB Basics posts have been gathered [...]

MATLAB Basics video: Colormaps

Wed, 26 Sep 2007 20:05:51 +0000

This is one of a series of videos covering MATLAB basics. It is meant for the new MATLAB user. This video covers how to use built-in colormaps, edit them and apply them to your figures. Find the files here. Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/ Other MATLAB Basics posts have been gathered here: http://blogs.mathworks.com/pick/category/matlab-basics/