Chris

Last seen: 10 Tage vor | Aktiv seit 2018

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You know how you can sort of see a flashlight through your hand? Red and near-IR photons scatter throughout the tissue and are infrequently absorbed. I study how to use that effect to measure tissue health. Pic not really related.

Programming Languages:
Python, C, MATLAB

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What would cause Matlab to lose track of gcf()?
I'm trying to reproduce a bug/reduce it to something I can report, but so far it only happens when I call a particular 150-line ...

3 Monate vor | 2 Antworten | 1

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How to export 3D sphere at stl format
You need a triangulation. stlwrite only works with triangles (vs tetrahedrons), which maybe has to do with an stl only defining...

12 Monate vor | 0

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Exempting imaginary numbers from the output of an expression using an if statement.
You can take the absolute value of each difference: AT = sqrt(s.*abs(s-a).*abs(s-b).*abs(s-c));

12 Monate vor | 0

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How should I control label behavior when enabling/disabling elements in app designer?
I've attached a simple app wherein one listbox is disabled by default. In design view, this grays out the label text, as if gray...

12 Monate vor | 1 Antwort | 0

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Splitting table field with multiple rows into separate columns
Whoops. It looks like each array in Data is a cell, so you'll need to drill down a bit. To repack the first cell: load('Data.ma...

mehr als ein Jahr vor | 0

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Splitting table field with multiple rows into separate columns
How about: T = rows2vars(Data); T(:,1) = []; Or, if you really only want the first three: T = table(Data{1,1},Data{2,1},Data...

mehr als ein Jahr vor | 0

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Fast calculation of distances between two large arrays
This should be a little bit quicker (my computer indicates ten hours). tol = 0.5; M = rand(1113486,2); N = rand(1960000,2); ...

mehr als ein Jahr vor | 0

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Plot length of time between two events
Without your code, it's difficult to say what is "easier." Errorbar plots are pretty simple. You could use patch... % My table...

mehr als ein Jahr vor | 0

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Simple query: how can I remove radial axes (eliminate the "spokes") on a Compass Plot
I think the developers of these functions don't intend for us to be messing with the grids, or haven't gotten around to making i...

mehr als ein Jahr vor | 0

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I'm having a problem averaging multiple curves using interp1
You take the mean and max of the U values; I believe you want the I values instead. You have plenty of data points, so the defa...

mehr als ein Jahr vor | 0

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Logical Indexing With LinSpace Issues
This looks like a problem of computer precision. Double-precision floating point numbers in matlab (and floating-point numbers i...

mehr als ein Jahr vor | 1

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What is the difference between "any" and "all" function?
B = [0 0 0]; [any(B), all(B)] C = [1 1 1]; [any(C), all(C)] A = [0 1 0]; [any(A), all(A)] If any elements are true, any is...

fast 2 Jahre vor | 1

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Unable to install matlab as it shows error unable to launch matlabWindow application
I would recommend using a Supported OS, probably with Gnome or KDE. If you insist on torturing yourself, start by reading the M...

fast 2 Jahre vor | 1

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I would like to modify the equation to calculate total reflection coefficient for N multilayer structure
You could start with an approach like this (numbers are made up): ep = [1 3.9 12 1].'; % The apostrophe transposes the array t...

fast 2 Jahre vor | 0

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set range in plot interactively
Attached is a basic app made hastily in App Designer. There are UI elements including a UIAxes for plotting, and callbacks att...

fast 2 Jahre vor | 1

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Unable to perform assignment because the left and right sides have a different number of elements.
You've hit the end of the file. The file has 10001 data-containing lines. Your code errors at ii==11, jj==2. block_size (1000...

fast 2 Jahre vor | 2

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Starting the AddOn Manager from the command line
I've just run across the Matlab Package Manager, though I'm not sure it would be helpful for your case either. MPM

fast 2 Jahre vor | 1

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how to rotate image using function notation
If you're using imwarp, you might as well use imrotate, no? You'd be using the function imrotate() to rotate an image, if that's...

fast 2 Jahre vor | 2

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How do I input a table column of values into a formula?
The problem, as pointed out by Stephen, is that you are accessing the table data with parantheses, which creates another table. ...

fast 2 Jahre vor | 0

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Question regarding how to make a game similar to snake in MATLAB.
You could introduce a "grow" bit for each snake. Set it to false initially. grow = false; If a snake collides with an apple, s...

fast 2 Jahre vor | 0

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Calling matlab.engine.connect_matlab() twice freezes Python
names = matlab.engine.find_matlab() if 'MY_SESSION' in names: eng = matlab.engine.connect_matlab('MY_SESSION') You can de...

fast 2 Jahre vor | 0

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Converting an array slicer to Python
Here's a demonstration. import numpy as np lo = -200 hi = 20 x = np.ones((27000,1)) udata = np.ones((27000,10)) columnMa...

fast 2 Jahre vor | 0

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How to merge and slice arrays of different sizes?
Perhaps you'd be better off with a cell array. ydata = randi(9,1,8) ydata = num2cell(ydata) udata = num2cell(randi(9,1,8)) u...

fast 2 Jahre vor | 0

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disp(‘hello world’);
disp ('hello world'); Your apostrophes are wrong. How did you generate them? Here is your version: disp (‘hello world’); You ...

fast 2 Jahre vor | 0

Frage

I'd like to plot some points over an image in a dialog.
I want to be able to select one point with a left-click, a second point with a right-click, but I'm running into all sorts of tr...

fast 2 Jahre vor | 1 Antwort | 0

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Matlab App Designer get axes name from button click
I would add a tag (under "Identifiers") to the UIAxes. Then: function UIAxesSelectedCallback(app, event) selectedA...

fast 2 Jahre vor | 0

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How to do this temporal plot
Here's one way. For importing data, perhaps something like data=transpose(readmatrix('filename.xlsx',Range','A2:N2002')); Empt...

fast 2 Jahre vor | 0

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How do I create a property in a class that is a direct handle to another class object
@Captain Karnage like so? mydef = myDefinition; a = myDefinedObject([],mydef,[]); whos mydef a a.type a.type()

fast 2 Jahre vor | 0

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How to put name axes in 3D surf graph
Same way you would with a 2D plot. xlabel('Gy') ylabel('mm') zlabel('mm')

fast 2 Jahre vor | 0

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I want to do a knob for salt and pepper noise but the value of the noise dose not change
function UIAxesButtonDown(app, event) % The default button style doesn't have a value. % chang...

fast 2 Jahre vor | 0

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