Question

How to check if one of output variables is not called

If I have a function which can return multiple outputs, how can I tell from inside the function that some of the output variable...

5 days ago | 1 answer | 0

Question

How to loop through an unknown number of matrix dimensions?

I would like to loop through all dimensions of a n-dimensional matrix, but the matrix dimensions are unknown beforehand. Below i...

13 days ago | 1 answer | 0

Question

How to make 'far away' markers appear smaller (perspective)

To make it easier to visually interpret 3D data when shown on a 2D surface like the computer screen, I would like to plot data s...

22 days ago | 1 answer | 0

Question

Rationale for functions going into Computer Vision vs. Image Processing toolboxes

I am curious about the thought process is for deciding if a builtin function belongs in the Computer Vision vs. Image Processing...

1 month ago | 0 answers | 0

Question

Why all Matlab windows blank and unresponsive?

Today I was coding in Matlab then went to lunch. When I returned, all the Matlab windows (editor, command window, 2 figure windo...

1 month ago | 0 answers | 0

Answered

What are the capabilities of the MATLAB Support Package for Parrot drones? How is it different from the already existing Simulink Support Package?

Beware to anyone considering the Parrot Mambo FPV or Bebop: both are discontinued, see here.

What are the capabilities of the MATLAB Support Package for Parrot drones? How is it different from the already existing Simulink Support Package?

Beware to anyone considering the Parrot Mambo FPV or Bebop: both are discontinued, see here.

1 month ago | 0

Answered

Which drones are supported by the MATLAB Support Package for Parrot Drones?

Beware to anyone considering the Parrot Mambo FPV or Bebop: both are discontinued, see here.

Which drones are supported by the MATLAB Support Package for Parrot Drones?

Beware to anyone considering the Parrot Mambo FPV or Bebop: both are discontinued, see here.

1 month ago | 0

Answered

Convert matrix of RGB double values to image

I just realized the following works, but please let me know if I am losing information by converting to uint8, figure; imshow(...

Convert matrix of RGB double values to image

I just realized the following works, but please let me know if I am losing information by converting to uint8, figure; imshow(...

2 months ago | 0

| accepted

Question

Convert matrix of RGB double values to image

I have a matrix which contains RGB values which range from 0 to 1. I would like to turn it into an image, but if I use uint8 the...

2 months ago | 1 answer | 0

Question

Other drones besides Parrot Mambo FPV

I am looking to buy a camera drone and process the images in Matlab. Since this is new to me, I would like easy integration with...

2 months ago | 2 answers | 0

Question

Formatted string plus list of numbers using sprintf

I would like to display comma-separated records like the following, Record1,2,8,3,5,2,6,3,7,7,7 Here's my attempt, but is ther...

2 months ago | 2 answers | 0

Question

In evaluating a neural net, should NMSE be based only on test subset of data?

In answers like this, Greg Heath suggests using the normalized mean square error, NMSE, to compare the performance of different ...

3 months ago | 1 answer | 0

Question

How to work with function inputs which are structures with different fields

I have a function. The inputs are multiple structures which have some of the same fields but also some different fields. I may p...

3 months ago | 1 answer | 0

Question

Solve an overdetermined problem with lsqlin

I am having trouble formatting the inputs to lsqlin. I would like to solve for x in Cx=d, where C is 100 by 5 and d is 100 by 10...

4 months ago | 1 answer | 0

Question

How to set disableDefaultInteractivity for all axes?

In Matlab 2018b and later, the cursor is set to automatically interact with the plot. This messes up my plots (accidentally movi...

4 months ago | 1 answer | 0

Question

How to capture many warnings at startup

All my mfiles on my path have gotten accidentally relocated on my computer, so that now when I start Matlab, I get warnings like...

4 months ago | 0 answers | 0

Question

How to tell how when an executable was first run? (Imposing a 30-day demo period)

I made an executable of some Matlab code using the Complier. I would like the executable to stop working after a 30-day demo per...

6 months ago | 0 answers | 0

Answered

griddata interpolation just within a certain distance

One option might be to use objective mapping such as Kirill Pankratov's implementation objmap (described here, code here). You w...

griddata interpolation just within a certain distance

One option might be to use objective mapping such as Kirill Pankratov's implementation objmap (described here, code here). You w...

6 months ago | 0

Question

Seeking faster objective mapping of noisy, irregularly spaced data

If you have noisy data sampled at irregular x,y locations, you can use objective mapping to make a smooth map of the results. I ...

6 months ago | 0 answers | 0

Answered

griddata not creating a smooth interpolation

You may want to try an outside function, objmap, which lets you choose how smooth the map is in x and y, and how much error to a...

griddata not creating a smooth interpolation

You may want to try an outside function, objmap, which lets you choose how smooth the map is in x and y, and how much error to a...

6 months ago | 0

Question

Best Matlab file format for input into a RIP

I am creating an image in Matlab that I would like to print on a large-format printer that has a RIP (Raster image processor). T...

7 months ago | 0 answers | 0

Answered

generating CIELab Image

Here is an example of how to write a tiff file containing 3 known Lab values. As a check, open the tiff file in Photoshop: the d...

generating CIELab Image

Here is an example of how to write a tiff file containing 3 known Lab values. As a check, open the tiff file in Photoshop: the d...

7 months ago | 1

Question

Generate an image containing a pattern of random shapes

I would like to generate an image like this containing random shapes where I specify the size range, color, and type of shape su...

7 months ago | 1 answer | 0

Question

Avoid partial blocks in block processing with blockproc

If you block process an image using blockproc and the desired block size does not divide evenly into your image size, it seems t...

8 months ago | 1 answer | 0

Answered

Parameter sweep without nested for loop

Here is one solution using allcomb, but is there a better way? By "better" I mean "easy to understand what the code is doing, ye...

Parameter sweep without nested for loop

Here is one solution using allcomb, but is there a better way? By "better" I mean "easy to understand what the code is doing, ye...

9 months ago | 0

| accepted

Question

Parameter sweep without nested for loop

The following parameter sweep has many nested loops. How can I eliminate the nested loops with linear indices, but be able to ac...

9 months ago | 1 answer | 0

Question

Is it possible to zoom in during Preview in Image Acquisition Tool?

I am using the Image Acquisition Tool to preview a camera image so that I can focus the camera. I would like to zoom in on the i...

9 months ago | 1 answer | 0

Question

How to turn off drawrectangle?

I used drawrectangle to draw a rectangle on an image and adjust its size and position, but then I can't figure out how to turn o...

9 months ago | 1 answer | 1

Question

Colormap engineering to highlight small values

I would like to construct a colormap for a set of data where the values range from [0,100] but I want the values in the [0,20] r...

10 months ago | 2 answers | 0

Question

If I want to make a prediction from a neural net, do I have to use the same random number generator seed?

I have a question about the state of the random number generator when I make a prediction with a neural network. Let's say I loo...

10 months ago | 1 answer | 0