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How to obtain the FFT of a 4D image
Hi, I have a 4D image [x,y,z,t] and I would like to plot the FFT of the signal of a region of interest. I load my image and ...

4 months ago | 1 answer | 0

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answer

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How to store data in each iteration
Hi, I have the following code in which I calculate the time curve of each non-zero region of my image. In each iteration I woul...

4 months ago | 1 answer | 0

1

answer

Question


Select particular 3D volumes of a 4D matrix
Hi, I have a 4D matrix with dimensions [384, 308, 26, 31]. The 4D matrix is an image [x,y,z,t]. I would like to keep the x,y an...

9 months ago | 1 answer | 1

1

answer

Question


Help with Java heap space on macOS Big Sur
Hi, I have a persistant and very annoying problem with matlab. I am keep getting the following error and I can't work with MAT...

10 months ago | 1 answer | 0

1

answer

Question


Java heap space out of memory problem R2017b
Hi, I have the following error which I haven't managed to solve yet. I am using Matlab R2017b Any help? Exception in thread ...

10 months ago | 1 answer | 0

1

answer

Question


Solution hit upper bound in lsqnonlin
Hi, I am fitting my data using the lsqnonlin function. The equation that I need to fit to the data is quite complex with 5 unkn...

11 months ago | 1 answer | 0

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answer

Question


How to create a 3D stack using 2D images
Hi, I have a 2D binary image with dimensions [145,145] and I would like to create a 3D stack using 10 times the same 2D binary...

1 year ago | 1 answer | 0

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answer

Question


Read .dat file in the format of a 3D matrix
Hi, I have a .dat file which is an output from IDL. This is a float 3D matrix with dimensions [145, 145, 249]. I tried to read ...

1 year ago | 0 answers | 0

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answers

Question


Plotting signal of a region of interest
Hi, I have 3D data [114,114,55] = [x, y , time]. I also have a binary mask with 0 background and 1s the pixels correspong to l...

1 year ago | 1 answer | 0

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answer

Question


How can I rotate a part of a matrix
Hi there, I have a 4D images (dimensions [156 192 26 42]). I would like to rotate only the last 20 volumes of my 4D ma...

2 years ago | 1 answer | 0

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answer

Question


Adding a scatter of points in different colour to a boxplot
I would like to add the mean value of each subject (n=9) to my boxplot but for each subject I would like to use a different colo...

2 years ago | 1 answer | 0

1

answer

Question


Find aggrement for Classification problem between 5 raters
Hi, I have 5 radiologists who classified tumors in 3 stages (Stage 1, Stage 2, Stage 3). They did the classification manually ...

2 years ago | 1 answer | 0

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answer