Question

Setting different properties for some line objects stored in the same handle

Let's say I have a handle h1 that contains several line objects, like so: h1 = plot(1:10, rand(10, 25)); % h1 contains 10 line ...

20 days ago | 2 answers | 1

Question

Accessing field data in nonscalar structure array

Let's say I have a nested non-scalar structure array, Patient(1).Vitals.weight = 185; Patient(1).Vitals.temperature = [98 96 1...

2 months ago | 2 answers | 0

Answered

DOCTYPE error from xmlread

It turns out this was not an xmlread issue, and has nothing to do with AllowDoc, but instead is due to a problem with the XML fi...

DOCTYPE error from xmlread

It turns out this was not an xmlread issue, and has nothing to do with AllowDoc, but instead is due to a problem with the XML fi...

2 months ago | 0

| accepted

Question

DOCTYPE error from xmlread

I have been given an XML file and am trying to read it with xmlread. If I call it either of the following ways, DOMNode = xmlre...

2 months ago | 1 answer | 0

Answered

Is it possible to have a zero value in the pie-chart data in MATLAB 7.6 (R2008a)?

If you are doing this to plot a pie which is missing a slice, see here ('Partial Pie').

Is it possible to have a zero value in the pie-chart data in MATLAB 7.6 (R2008a)?

If you are doing this to plot a pie which is missing a slice, see here ('Partial Pie').

3 months ago | 0

Answered

"The handle is invalid" when running an exe

Passing along the solution from here in case it helps someone: Due to the popup window that the exe generates, I needed to add a...

"The handle is invalid" when running an exe

Passing along the solution from here in case it helps someone: Due to the popup window that the exe generates, I needed to add a...

3 months ago | 0

| accepted

Question

"The handle is invalid" when running an exe

I would like to run an executable from the Matlab command line. However when I try system('MyProgram.exe') I get the error, U...

3 months ago | 1 answer | 0

Answered

How can I move my MATLAB Path from my old version of MATLAB over to a new version?

Upgrading to R2019b from R2019a, I copied my personal directories into the new pathdef.m file using the R2019b matlab editor and...

How can I move my MATLAB Path from my old version of MATLAB over to a new version?

Upgrading to R2019b from R2019a, I copied my personal directories into the new pathdef.m file using the R2019b matlab editor and...

4 months ago | 0

Question

How to match an image subset in an image?

Let's say I have image #1, and a second smaller image #2 containing some of the pixels from image #1. The pixels in image #2 wer...

4 months ago | 2 answers | 0

Answered

How to match an image subset in an image?

This is slow (15 seconds on my machine) but it seems to return the expected location, % Create a mask for selected pixels in ...

How to match an image subset in an image?

This is slow (15 seconds on my machine) but it seems to return the expected location, % Create a mask for selected pixels in ...

4 months ago | 0

| accepted

Question

Import a Photoshop selection into Matlab

Let's say I have an image that I open in Photoshop, and I make a selection of a region, for example with the lasso tool. I would...

4 months ago | 0 answers | 0

Answered

Intensity profile line with interpolation

You can specificy the number of points, n, in improfile and also choose the interpolation method such as bicubic (avoid nearest ...

Intensity profile line with interpolation

You can specificy the number of points, n, in improfile and also choose the interpolation method such as bicubic (avoid nearest ...

4 months ago | 1

Question

Excluding Hough transform artifacts at 45 and -45 degrees

I am following steps in this example to find lines in my image, which contains a lot of nearly-horizontal lines. The Hough trans...

4 months ago | 1 answer | 0

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 months 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...

6 months 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...

6 months 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...

6 months 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...

6 months ago | 0 answers | 1

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.

7 months 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.

7 months 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(...

7 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...

7 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...

7 months ago | 3 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...

7 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 ...

8 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...

8 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...

9 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...

10 months ago | 2 answers | 1