Sven

University of Michigan

Last seen: 4 dagar ago | Active since 2011

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Aussie living in the US. Engineering with MATLAB. Some Interests: -3D Volume Processing (CT, mri) -Finite Element Analysis (human body simulation) -Geometry Analysis (human body morphomics) Professional Interests: Image processing, Finite Element Analysis, Human Body Biomechanics

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Function (in 2024a) to separate implicit directory parts from a folder string?
In MATLAB versions from 2014 to 2023b there was an internal utility function called matlab.internal.language.introspective.separ...

6 månader ago | 1 answer | 0

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Is there any function similar to 'clabel' to use in 3D graphics (contourslice)?
A 3D spatial domain generates a 3D isosurface (rather than a 2D isocontour). Here is some code to generate/display such a surfa...

mer än ett år ago | 0

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Cascading sort order that restarts count at each subsequent column
I'm trying to sort a table by multiple columns (easy) and obtain a specialized sort order (not-so-easy). Rather than a sortInde...

mer än 2 år ago | 1 answer | 0

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Delete axes interactions not working?
I'm using 2021a and it seems that deleting/disabling interactions isn't working as expected. I'm just trying to either (1) make ...

mer än 3 år ago | 1 answer | 1

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ftlim multiple regression with interaction term
It's a few years late but I think I've discovered the bug that may have been your problem (or at least generates a similar error...

mer än 6 år ago | 0

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FaceAlpha of bar3 plot smaller than 1 ruins rest of the plot
Hi Sven, We don't have your data (and we don't even know which of your variables are matrices, which are vectors etc.), so we...

mer än 8 år ago | 0

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how to make cropping for image ?
Hi Eliz, try this: % Read your original image Img1 = imread('http://www.mathworks.com/matlabcentral/answers/uploaded_fil...

mer än 8 år ago | 1

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how to compare cell arrays of different lengths?
We can start with your input a = int64(1:3)'; out = num2cell(a); b = int64(1:4)'; out2 =num2cell(b); We will pr...

mer än 8 år ago | 1

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how to save all value of centoid of many object from one image ?
The centroid is not a scalar value. It has two components (X coordinate, Y coordinate), so you cannot assign it to a scalar vari...

mer än 8 år ago | 0

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Save using -append behaves differently when replacing objects vs replacing arrays
Hi all, I'm trying to save some variables to a .mat file, appending to that file if the variable is new, overwriting if it's ...

nästan 9 år ago | 1 answer | 1

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Indexing via 3d array changed behaviour 2015a -> 2015b?
Hi all, just got 2015b, here's a strange one where indexing via a multidimensional array has a differently shaped output to prev...

ungefär 9 år ago | 1 answer | 2

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Convert image into Patches of size 64*64 and get each patch
Hi Tahir, try this: I = imread('rice.png'); imSz = size(I); patchSz = [64 64]; xIdxs = [1:patchSz(2):imSz(2) imSz(...

mer än 9 år ago | 2

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Overlapping region of a single ROI is excluded by the mask
Hi Alessandro, When you say that you _"want to draw a closed ring shape with a single line"_, we might step-by-step reinterpr...

mer än 9 år ago | 0

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Find strings that contain multiple substrings at the same time
Hi Sven, Here's how I would do it. It uses a call to *regexp* (you could also use *strsplit*) and one *cellfun*. The good thi...

mer än 9 år ago | 0

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How can I replace a loop with arrayfun - problems with strrep
Hi Sven (congrats on the name), Here's a pretty direct way to do what you're trying to do. It uses regexp once and cellfun on...

mer än 9 år ago | 0

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Question

Fit to just half a parabola
Hi there, I have some simple XY data, and I can fit a quadratic to it as follows: X = [25.4 30.48 35.56 40.64 45.72 5...

mer än 9 år ago | 0 answers | 0

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how can i remove object bigger than x pixel
Hi Lukasz, Here's an example that removes all objects greater than 1000 pixels in area. You probably have your own *BW* image...

nästan 10 år ago | 1

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Question

getframe difference in 2014b.... bug?
The following code run in 2014a and 2014b produces remarkably different results. I think it's a bug. figure('Position',[100...

nästan 10 år ago | 1 answer | 1

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Question regarding matrix index
Hi jana, Try this: X = [1 2 3 4 5; 3 inf 5 7 inf; 5 6 7 inf inf; 2 3 4 9 1] [val, rowNum] = ...

mer än 10 år ago | 0

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Get new variable with elements from a double matrix & cell array given a specific condition
Hi Maria, This code should do what you're looking for: A = { '19970102' '00000127' 'MORRISON' '00148' 'BA' '199701...

mer än 10 år ago | 0

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identifying number on dice
Hi Sameer, Here's what I would do. It's a little like IA's bwareaopen suggestion. It tries to make minimal assumptions other th...

mer än 10 år ago | 0

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Please help create a transition matrix
Hi Ella, The code below should do what you're looking for. I displayed the result as an image but you can just look at the fi...

mer än 10 år ago | 1

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Answered
Creating an array without mesgrid
You're very close: for i=1:3 for j=1:3 X(i,j)=j; Y(i,j)=i; end end No...

mer än 10 år ago | 1

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Answered
Finding signal to noise ratio
Hi Tinkul, does this help you out? I assume that the values you gave are already in your desired units (although true SNR is bas...

mer än 10 år ago | 1

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Answered
how to simplify connected blobs
Hi Sukuchha, please see <http://blogs.mathworks.com/steve/2014/03/27/comparing-the-geometries-of-bwboundaries-and-poly2mask/#com...

mer än 10 år ago | 0

Answered
how to simplify connected blobs
Hi Sukuchha, I think that you just need to do this: XY = [0 0; 1 0; 1 1; 0 1]; % unclosed XY points XY_closed = XY(...

mer än 10 år ago | 0

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How to write a function that returns the element that is the center of a vector or matrix?
Hi Kimberly, try this: % Set up some input x = [1 2 3 4 5 8 1 1 2] % Grab the middle column(s) x...

mer än 10 år ago | 1

Answered
Output matrix for simple function
Hi Derek, MATLAB has some useful ways to do what you're trying to do. If you use the (.*) operator instead of (*), it will pe...

mer än 10 år ago | 0

Answered
How can I calculate the perimeters of Delaunay triangles?
Hi ZhG, Here is some code that shows a few different ways of getting the perimeter of triangles. It first just shows the leng...

mer än 10 år ago | 1

Answered
2D Plotting With Non Numeric X Axis
Hi Dan, Try this code, there's a *dateaxis* command perfect for what you want: xVals = datenum(0,1:12,1); % The first da...

mer än 10 år ago | 0

Sven

University of Michigan

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