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Matt J


Last seen: Today 2010년부터 활동

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Professional Interests: medical image processing, optimization algorithms PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.

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Trying to do an fsolve via an anonymous function
It doesn't look like you need an iterative solver at all. It appears that your rho0() function is just a reinvention of normcdf ...

대략 7시간 전 | 0

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Extract certain data from array where repeats are present (but constant values)
Why not as follows, low= find(Y==min(Y),1,'last'); high=find(Y==max(Y),1,'first'); d=d(low:high,:);

대략 15시간 전 | 0

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Too small vertical bar showing errors and warnings in the Editor
Put the mouse in the editor Window. Hold the Ctrl key and rotate the mouse wheel to restore the zoom to 100%. Then, go into Pre...

1일 전 | 1

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Precision lost when combining Int32 integers with single precision numerical numbers
I wasn't there when the decision was made, but I suspect it would be because in Matlab, numeric literals are always double float...

2일 전 | 0

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Scatter‐plot marker edge color turns black when copying to PowerPoint
If you download export_fig, https://www.mathworks.com/matlabcentral/fileexchange/23629-export_fig?s_tid=srchtitle and if you...

3일 전 | 0

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Readtable and Readmatrix Ignore Specified Range and Produce Extra Variables
When I save as .xlsx, it seems to work okay, in1 = readtable('2025-03-28_02-07_10-0.xlsx', 'ReadVariableNames', false, 'Range',...

4일 전 | 0

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Connecting points on opposite end of mask
load('coping_data (1).mat') img=logical(img); n=height(points); f=@(z,n) circshift(z,-n); mod1=@(z) mod(z-1,n) + 1; x...

4일 전 | 0

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concatanate arrays upon condition
The way your data is held, as separate enumerated variables, doesn't leave many options. The first thing would be to undo that: ...

4일 전 | 0

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Clean and automate indents in scripts an live scripts
Download my editorExtract and editorReplace tools, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-...

5일 전 | 1

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appDesigner: How to set tree checkbox names = names of .xlsm files in the directory
Something like this, function startupFcn(app) % Get .xlsm files in the current directory (or specify full path) docFi...

6일 전 | 0

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estimate camera parameters with fixed translation z value?
Not with estimateCameraParameters. You will have to implement your own constrained routine using lsqcurvefit or lsqnonlin, but y...

6일 전 | 1

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Finding coordinates of a point from bisector of two lines
M1=P1/2; Q1=norm(M1)*P2/norm(P2);

6일 전 | 1

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The coefficients of a Hermite polynomial
syms t n = 4; % Degree of the Hermite polynomial H = hermiteH(n, t); % Generate Hermite pol...

10일 전 | 1

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get validation loss and metric for the best network
You would have to interpolate the validation history data at the best MSE, probably. But keep in mind, the best MSE does not r...

11일 전 | 1

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background subtraction to detect human
Something like this, perhaps? load data [r1,b1,g1]=imsplit(img1); [r2,b2,g2]=imsplit(img2); mask = imopen( abs(r1-r2)>50 &...

11일 전 | 0

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Import markup into LiveScript
The best workaround I can find is to make a small mfile and embed the marked-up text in comments, %% % For a given energy |E|...

12일 전 | 0

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A question about text string concatenation
Using [] are for concatenating char vectors, but some of your variables are apparently strings. But you can remedy this with str...

12일 전 | 1

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Customized text modification buttons for the Matlab Editor
A pair of functions enabling simple, programmatic modification of Matlab Editor text. These can be used to make customized butto...

12일 전 | 다운로드 수: 12 |

0.0 / 5

답변 있음
Tabular assignment extremely slow
No demo code? Tsk...tsk.. But if I were to guess, it is because you are using brace indexing for row-wise access like in the c...

12일 전 | 0

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Nonlinear regression of multiple datasets with different functions but wit some shared parameters between datasets
You would probably need to use lsqcurvefit. There is nothing about having multiple data sets, following different functions, tha...

12일 전 | 0

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질문


Import markup into LiveScript
If I have some text with LaTeX and other markup like the following, For a given energy |E|, the *primary*...

12일 전 | 답변 수: 3 | 1

3

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답변 있음
Using regionprops to detect circles in an image
For this, you will need to download, https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-to-fit-pl...

12일 전 | 0

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Estimate area under a curve using finite approximations (lower sum with 4 rectangles of equal length)
f= @ (x) x.^2; x1=0; x2=1; n=4; value=0; dx=(x2-x1)/n; % width of rectangle for k=0:n-1 c=x1+k*dx; va...

13일 전 | 1

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how can I plot inset of a new plot in a few of my subplots (say ha(1) and ha(3))?
I know that I should use axes('Position',[.5 .5 .2 .2]); box on; No, you have to set the Position of the inset axes relative t...

14일 전 | 0

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downloadTrainedNetwork not found (deep learning toolbox?)
This well get you all the required functions, openExample('images_deeplearning/Segment3DBrainTumorsUsingDeepLearningExample')

14일 전 | 0

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Unrecognized field name "constrviolation" in MultiStart when function to fit contains an integral
Well, I think it's a bug. So you should report it. However, I find that it goes away if you don't use PlotFcns, so it's definite...

14일 전 | 0

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How to Solve Linear Complementarity Problem (LCP) with MATLAB ?
You could do it with quadprog, but you may as well just deploy it as an optimproblem. n=5; q=-rand(n,1); M=rand(n); M=(M+M')/2;...

15일 전 | 0

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how to catch object "button"
You have it already. app.Button is the handle to that button, unless you've renamed it to something different from the text disp...

17일 전 | 1

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use "set" with trasparent color
It's undocumented, I believe, but you can control line transparency by setting the Color property to a 4-element RGBA value. h=...

17일 전 | 0

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How to convert a column of float or not data into double?
It is not possible for an array to hold both numeric floats and chars unless it is a cell array. That being the case, it is easy...

18일 전 | 0

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