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Adam Danz


University of Rochester

1.510 total contributions since 2014

Email: feel free to contact me regarding my shared files on the file exchange. I don't do free consulting outside of the forum so if you have a Matlab question, post the question to the forum and you may email me the link to the question.

About me: Finishing PhD soon on topics related to vision science; neurophysiology; sensory-motor feedback and control; control systems; steering & navigation; multisensory integration; top-down bottom-up feedback loop.

"If I had only one hour to save the world, I would spend fifty-five minutes defining the problem, and only five minutes finding the solution." -Albert Einstein

"An expert is a person who has made all the mistakes that can be made in a very narrow field." -Niels Bohr

"If you are not embarrassed by the first version of your product, you've launched too late" - Reid Hoffman

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Answered
ttest NaN result is NaN and i am a beginner
Since this topic continues to surface within the forum, here's a summary of reasons why NaN values may appear in a ttest() outpu...

ongeveer 9 uur ago | 2

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Answered
Correct way to detect Zero crossing
The entire function can be replaced with y = I<1e-8; which will return a logical (true | false). If you want a double (1 | ...

ongeveer 12 uur ago | 0

Answered
Why does polyfit not exist in r2019b?
It does exist in r2019b. https://www.mathworks.com/help/matlab/ref/polyfit.html You have a variable with the same name so Matla...

ongeveer 17 uur ago | 0

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Answered
Filling area with pattern
Hi shane, filling with a pattern isn't trivial so I recommend the functions listed in the file exchange. However, here's a fai...

ongeveer 18 uur ago | 0

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Answered
Figure colorbar is not refreshed
Control the limits of the colorbar using caxis(). This line adjusts the colorbar limits to the range of your data. caxis([min...

ongeveer 19 uur ago | 0

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Answered
get the location of points in a plot by mouse interaction in app designer
That call back function uses fprintf() to display the results in the command window. To display the results as text in a textbox...

ongeveer 19 uur ago | 0

Answered
Why do I get an NaN error with the ttest?
Rather than copying the answer to here, see this review of possible causes of NaN output in ttest().

ongeveer 19 uur ago | 0

Answered
Matlab considers different two equal numbers!
You could limit the values in your matrix to the first 4 decimal places but this is usually not a good idea unles there's a reas...

ongeveer 23 uur ago | 1

Answered
How can I find the parcentage of values in a vector that are bigger than 5.
" I want to calculate the number of values in that vector that are bigger than 5" p = sum(v>5)/numel(v); If there are NaNs yo...

1 dag ago | 0

Answered
Why am I getting "Array indices must be positive integers or logical values"?
This line below implies that you're trying to index values from an array N where the index values must be positive integers or l...

1 dag ago | 1

Answered
How to create 2D sub arrays by sampling every n by n points
The iter-loop is completely unnecessary and is merely doing the same exact work 1000 times. numIter=1000; tic % for iter=1:n...

1 dag ago | 0

Answered
How can I put a display that shows changing variables in a plot?
Use h=text(. . .) to create the text object and then update the handle as needed. Here's a demo clf() axh = axes(); h =...

1 dag ago | 0

Answered
Change bar colors based on date
The only place in your data where I see moon phase is in column F of your spreadsheet and only the first month is indicated. Th...

1 dag ago | 0

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Answered
how expand plots with different x-axis ranges
Specify the edges for both histograms rather than letting that funciton choose the bins. histogram(X,edges) If the data fro...

1 dag ago | 0

Answered
Resize plot to fit text
Get the extent of the text objects after plotting the text. Add the vertical position and height to get the upper position of ...

2 dagen ago | 1

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Answered
Error using plot Vectors must be the same length.
The cross correlation function xcorr() will produce an output with 2*M-1 elements where M is the number of elements in the input...

2 dagen ago | 1

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Answered
Non linear least square fitting
Create noisy circular data This section creates the noisy data we're fitting. % Create randome points along a circle r = 22...

2 dagen ago | 1

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Answered
How to read file .txt?
Assuming your text file is named myTextFile.txt and contains only that matrix, A = readmatrix('myTextFile.txt'); % for Matlab ...

2 dagen ago | 0

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Answered
How do I shade the xy plane at z=0 of my plot and how to stop the plot after it passes z=0?
The easiest solution is simply zlim([0,inf]) I also added grid on so we can see the 3D coordinates better. However, the data b...

2 dagen ago | 0

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Answered
How to display result in Text Area in Matlab Appdesigner
It's unclear whether you're working with numeric or text values. App designer has edit fields that return text and edit fields ...

2 dagen ago | 0

Answered
Print user-defined error messages as a table
msg = sprintf(['Polygon not supported. List of supported polygons is:\n' ... ' Triangle\n Square\n Pentagon\n Hexagon\n Hep...

5 dagen ago | 0

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Answered
First cell in array is empty
oops! Typo... should be for i = 1:length(theta) % ^^ end Two more unrelated tips: Always pre-allocate your lo...

5 dagen ago | 1

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Answered
How to filter a cell array filled with strings?
This will return a logical array the same size as 'A' where TRUE values indicate elements of A that meet the following requireme...

5 dagen ago | 1

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Answered
How can I use Textbox input from GUI in a separate script?
"I want to use the input of the textbox of my gui which i have created with guide, in a seperate Matlab script" There are sever...

5 dagen ago | 0

Answered
Why is format long providing a strange result?
It's because of the way you're combing two variables in the output display. Look at the last iteration of your 2nd for-loop. ...

5 dagen ago | 0

Answered
Swapping entries in column of table
I'm not sure why you're using string characters instead of numbers but I'll assume you have a reason for that. Here's how to ide...

5 dagen ago | 0

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Answered
What does the 'imfuse' output mean?
Regarding the line of code Fused = imfuse(Image3, Image4, 'falsecolor'); For the falsecolor method, by default, Fused is a com...

5 dagen ago | 1

Answered
STROOP TEST- COGENT
The handle to the text object and the handle to the "square" (not sure what you mean here, it could be a rectangle object, a pat...

5 dagen ago | 0

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Answered
On Startup: function name warning
None of the toolboxes are crashing - those are just warnings that you've got two functions with the same name. Don't delete a...

5 dagen ago | 0

Answered
moving scroll index in a ui figure
TL;DR: Don't waste your time, it's not currently possible in AppDesigner (r2019b). Programmatically scrolling to a specific r...

5 dagen ago | 1

| accepted

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