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KAE


98 total contributions since 2017

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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 days ago | 1 answer | 0

1

answer

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...

10 days ago | 1 answer | 0

1

answer

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...

24 days ago | 1 answer | 0

1

answer

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...

2 months ago | 1 answer | 0

1

answer

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...

2 months ago | 0 answers | 0

0

answers

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...

3 months ago | 0 answers | 0

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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...

3 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 ...

3 months ago | 0 answers | 0

0

answers

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...

3 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...

4 months ago | 0 answers | 0

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answers

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...

4 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...

4 months ago | 1 answer | 0

1

answer

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...

5 months ago | 1 answer | 0

1

answer

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...

6 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...

6 months ago | 1 answer | 0

1

answer

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...

6 months ago | 1 answer | 0

1

answer

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...

6 months ago | 1 answer | 1

1

answer

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...

7 months ago | 2 answers | 0

2

answers

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...

7 months ago | 1 answer | 0

1

answer

Answered
'apply' 'reverse' in mapminmax
<https://www.mathworks.com/help/deeplearning/ref/mapminmax.html mapminmax> is a scaling that is applied to your input data to ma...

8 months ago | 0

Question


Where in documentation does it say that fitnet([]) gives a linear model?
I have seen Greg Heath's posts such as <https://www.mathworks.com/matlabcentral/answers/296663-my-neural-network-is-getting-trai...

8 months ago | 2 answers | 0

2

answers

Question


Checking if minimum of a matrix occurs on the diagonal
For a matrix, I would like to check if the minimum value of each row is found on the diagonal. The minimum value can occur more ...

8 months ago | 1 answer | 0

1

answer

Question


Using R^2 results to optimize number of neurons in hidden layer
I am trying to find the optimal number of neurons in a hidden layer following <https://www.mathworks.com/matlabcentral/profile/a...

8 months ago | 1 answer | 0

1

answer

Answered
Setting a title for a legend
If you limit yourself to one output from the legend command, then the title is positioned correctly...as you noted in your origi...

8 months ago | 1

Answered
Can calculate AAPE values for my training data, validation data and testing data from my trained network as part of the process, like calculation of performance?
If you train a network as follows, [net, tr, y, e] = train(net,x,t) then the tr.trainInd, tr.valInd, and tr.testInd fiel...

9 months ago | 0

Answered
How to Use Neural Network After Deployment?
I have added some comments to an example in the <https://www.mathworks.com/help/nnet/ref/sim.html sim> documentation which does ...

9 months ago | 1

Answered
CIELAB values from TIFF image
Here is what I used on a 16-bit CIELab TIFF file based on the 16-bit ICCLAB documentation <https://www.mathworks.com/help/matlab...

10 months ago | 1

Question


How to display coordinates as rectangle is drawn over an image?
In a GUI, I have an image and the user selects a rectangle using getrect that is later used to crop the image. As the user is s...

11 months ago | 2 answers | 0

2

answers

Question


Fake colorbar for image
I would like to be able to show an image like the example below, but instead make a fake *color scale that is not related to the...

1 year ago | 2 answers | 0

2

answers

Question


What illuminant and observer does Matlab assume when it reads in Lab values from tiff file?
Outside of Matlab, I made a tiff file with CIE Lab values. The software I used to make the tiff file assumes D50 for the illumin...

1 year ago | 0 answers | 0

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answers

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