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Chris Portal


MathWorks

61 total contributions since 2016

MATLAB user since 1992
MathWorks employee since 1997

In my early years at MathWorks, I was a developer on the Data Acquisition Toolbox and Instrument Control Toolbox, before leading the development of Image Acquisition Toolbox v1.0.

These days, I focus on managing the MATLAB Graphics & App Building area, having worked on the MATLAB graphics R2014b update and the R2016a App Designer launch.

Outside of work - in my oodles of free time - I dabble in some filmmaking and photography projects. And while this is meant to be a creative break from work, every 5 years it seems both worlds intersect (www.chrisportal.com/portfolio-items/call-me-nerdy/).

See you around the community. Oh, and obviously, any advice or opinions posted here are my own, and in no way reflect that of MathWorks.

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Chris Portal's Badges

  • 3 Month Streak
  • Knowledgeable Level 3
  • Revival Level 1
  • First Answer

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Answered
How to install GUIDE to App Designer migration tool?
You would need to download it from here: <https://www.mathworks.com/matlabcentral/fileexchange/66087-guide-to-app-designer-mi...

2 meses ago | 0

Answered
Using animatedline in Matlab App Designer?
Your callback is doing a “clear all”, which clears out all of the variables available at that point, which in this case are “app...

3 meses ago | 0

| accepted

Answered
Problem with auto reflow in app designer
Auto-reflow is different than the autoresize option. Autoresize will resize components for you when the window is resized. Reflo...

3 meses ago | 0

| accepted

Answered
How do display the contents of array in Listbox using app designer ???
See the documentation for an example: https://www.mathworks.com/help/matlab/ref/uilistbox.html#bujty2f-1 Basically, you config...

4 meses ago | 0

Answered
Why can I not plot in app designer?
The data doesn’t fit within your limits. By only specifying the A vector you mentioned, you are only specifying the Y axes value...

5 meses ago | 1

| accepted

Answered
Is it possible to run an App Designer app on an installation of Matlab which does not have App Designer?
App Designer apps do not depend on App Designer to run, but the apps use features that were first introduced in R2016a, which is...

9 meses ago | 0

| accepted

Answered
Trying to learn how to display an image using app designer
You can pass workspace variables to your app using a startup function and app input arguments. The approach is described here: ...

11 meses ago | 0

| accepted

Answered
Insert image in AppDesigner GUI
If you're looking to plot image data into a UIAXES, this is available as of R2016b. If you're looking to display image data ...

alrededor de 1 año ago | 2

| accepted

Answered
Matlab app designer, overlaying images with transparency in UIAxes?
Using R2018a, I'm not able to reproduce this. This is the code I tried: I = imread('cameraman.tif'); f1 = imshow(I,'Pare...

alrededor de 1 año ago | 0

Answered
How do I save data from a Web App into a local file ?
In R2018a, this would only be possible if you specify a network path to the WRITETABLE command for it to produce the file at tha...

alrededor de 1 año ago | 0

Answered
Dynamic Option Values in UIDropdown using App Designer
You can do this by configuring your dropdown's values in the startup callback function. Right click on the figure background in ...

alrededor de 1 año ago | 0

Answered
How to speed up UIAxes in App Designer
Hard to say for sure without seeing the surrounding code, but you may need a call to DRAWNOW in your for loop. Alternatively...

alrededor de 1 año ago | 0

| accepted

Answered
Pairing MLAPP (AppDesigner) Apps With Other Classes
This is how I’d approach it: # Use the app window’s StartupFcn callback to initialize all your Class1, Class2, and Class3 obj...

más de 1 año ago | 0

Answered
How do I make an App written in App Designer Modal?
If you're using 18a or later, you can try using UIPROGRESSDLG to create an indeterminate progress bar while the secondary app is...

más de 1 año ago | 2

Answered
Access public property outside the app
You can take a look at this File Exchange submission to see how to do this in 16a and 16b releases of App Designer: <https://...

más de 1 año ago | 1

| accepted

Answered
Creating Multiwindow Apps in MATLAB 2016b
You can take a look at this File Exchange submission which does something similar and should work for 16a and 16b releases of Ap...

más de 1 año ago | 0

| accepted

Answered
Can Web Apps take input arguments?
Currently, it’s a limitation, but there’s a workaround. This is what the doc says: <https://www.mathworks.com/help/compiler/w...

más de 1 año ago | 0

| accepted

Answered
App designer dynamic properties
The answer in this other post describes how to do this in the general case if you’re creating multiple new components. If you ar...

más de 1 año ago | 0

Answered
Introduction of a new class properties inside its functions in App Designer.
The way to do this would be to add a property to your app called something like “NewComponents”. Every time you need to intro...

más de 1 año ago | 0

Answered
How to plot a 3D graphic with app designer ?
You can do this by calling your 3D plotting function and passing in the handle to your app axes: [X,Y] = meshgrid(1:0.5:10,...

más de 1 año ago | 0

Answered
How to pause/stop a Simulink model directly from App designer
You can do this by using the set_param and get_param functions to configure the SimulationCommand setting for your model. This d...

más de 1 año ago | 0

| accepted

Answered
How to Set App Designer Drop Down and List Box Data types
See the answer thread for the following post on how to address this: <https://www.mathworks.com/matlabcentral/answers/400550-...

más de 1 año ago | 0

Answered
App Designer LIST BOX data type
The type for the Value property depends on how you've configured the listbox. There are basically 2 scenarios: # *Using Items...

más de 1 año ago | 0

Answered
Is it possible to Re-order App Properties
Unfortunately there is no way to do this as of R2018a. It is a known enhancement, but I will log an additional request for the t...

más de 1 año ago | 0

| accepted

Answered
Add static images with APP designer
There are currently 2 options available which are described here: https://www.mathworks.com/matlabcentral/answers/283215-ins...

más de 1 año ago | 0

Answered
Uidatepicker in app designer
You can pass the panel’s handle as the parent for the uidatepicker. The syntax is described here: <https://www.mathworks.com/...

más de 1 año ago | 0

Answered
Trisurf in App Designer
TRISURF doesn't appear to support an axes to be passed in as the first input argument. Instead, it can take it via PV pairs as f...

más de 1 año ago | 1

Answered
How can I open an external application from Matlab app designer
Your system is not going to know where your test data file lives, so you need to provide it more than just the name and extensio...

más de 1 año ago | 0

| accepted

Answered
Problems with BytesAvailableFcn in App designer
This was covered in a related post available here: <https://www.mathworks.com/matlabcentral/answers/276824-how-to-use-bytesav...

casi 2 años ago | 1

| accepted

Answered
2017b: Since install of 2017b, I cannot run App designer properly. It fails to load something and does not compile.
Can you try the following and see if that helps: rehash toolboxcache

casi 2 años ago | 0

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