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Amit Chakraborty


Last seen: ein Tag ago Active since 2021

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rotation3D
This function is a 3-Dimensional Rotation.This program performs the rotation of coordinates of an (x,y,z) figure by any angle.

12 Tage ago | 4 downloads |

Question


Calculating angle between 2 vectors
xx = rand (1,16); yy = rand (1,16); zz = rand (1,16); A = [xx yy zz]; % First Vector pp = rand (1,16); qq = rand (1,16)...

14 Tage ago | 1 answer | 0

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3D plotting in MATLAB
I have 3 sensors wich are situated in X Y Z axes. From those sensors , I have a data which is a 3D matrix. The question is...

16 Tage ago | 0 answers | 0

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Differentiation of a data inside a Cell array
I have cell array called "s". Inside it there is only one data matrix. I need to do differentiation ( derivative) of that data (...

21 Tage ago | 1 answer | 0

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Manipulating Cell arrays element
Say I have a cell array called aa. Inside the cell I have 5 data elements [in reality it is huge matrix]. That 5 data element is...

21 Tage ago | 1 answer | 0

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Question


Time Vector in X axis Plotting
aa = {rand(482,5) , rand(493,5)}; t = linspace(0, 20,975 ); % Generating Time Vector Series Now how can I plot the cell data...

21 Tage ago | 1 answer | 0

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Plotting of a cell array
For example, I have a data of 4 persons (Say ; a,b,c,d ) which are confined in a cell a array called M. Now I want to plot firs...

22 Tage ago | 1 answer | 0

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Masking out unwanted data
Lets say , I have 2 matrix A and B . A = [1 0 1]; B = [ 2 5 6]; Consider that, for the first element of A ( which is 1) ...

29 Tage ago | 1 answer | 0

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Problem of using "imagesc" function
When I execute the following code it runs perfectly and shows me the slices. for i = 1:64 figure(1); imagesc(imgaussf...

4 Monate ago | 1 answer | 0

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Problems using parfor loop
% It would have been very helpful for if get some probable solution for the % following problem I am facing. Thanks in Advance....

4 Monate ago | 1 answer | 0

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Appending Voxel Intensity with the Voxel Co-ordinates and Plotting ?
I have this two Data. img_64_chest.mat = Voxel Intensity. voxel_coords.mat = Voxel Co.ordinate [1st Col : X , 2nd Col: Y, 3r...

5 Monate ago | 2 answers | 0

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How to put voxel intensity value in the plotting
My question is that here we can see the three different co-ordinates but I want to show the voxel intensity value also w...

5 Monate ago | 0 answers | 0

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Symbolic Expression Error problem !
I have two codes. one is with the numeric value and another code with the sysmbolic value. But both of them are same logic. Any...

5 Monate ago | 1 answer | 0

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How to determine the 3D points if the ray intersects the the voxel that is perpendicular to Y axis?
Here the line AB is intersecting the voxel perpendicularly on the Y-axis. How can I determine all the three points (3D poins) x....

6 Monate ago | 1 answer | 0

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Error of the following code : "Array indices must be positive integers or logical values."
% I have attached the file for : "ind" ; "len"; "miu". % In the following code "line : freq(j)" I am having above mentioned e...

6 Monate ago | 2 answers | 0

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Problem in "iradon"
I am having the error with the following code which " THETA does not match the number of projections". I know that the main reas...

6 Monate ago | 0 answers | 0

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Repetitive value arising in for loop
This is small part of my code. I use a parfor loop here which is required for my project. There are 60 different types of...

6 Monate ago | 1 answer | 0

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Sparse Array with reshape
I have a similar type of problem Yesterday but that is with non-sparse matrix. I am very newly dealing with these sparse matrix ...

9 Monate ago | 1 answer | 0

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Multiplication between elements of two different cells
F= num2cell(rand(360,4^3),2); T= num2cell(rand(10,4^3),2); RR = F{1:36}.*T{1}; EE = F{37:73}.*T{2}; Error :: Error us...

9 Monate ago | 1 answer | 0

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Splitting matrix and create new matrix
Hello All. I have a Matrx. A = rand (30,64^3); And I need to split that large matrix A in row by row. It means that : B1= A...

9 Monate ago | 2 answers | 0

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Two Matrices and Tensor Product
I have a Matrix. Lets say it is A . Size of A is : 1116* 16; and another Matrix B: Size is ::: 31*16; My matrix multiplicat...

9 Monate ago | 1 answer | 0

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Requested 196608x4096 (12.0GB) array exceeds maximum array size preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to unresponsive
I have two matrices. Matrix A : size is 196608x4096 sparse double Matrix B: size is [ 16 16 16 ] double I was trying to ...

9 Monate ago | 0 answers | 0

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Answered
Multiplication of sparse matrix and a normal matrix
@Walter Roberson , @David Goodmanson Thank you Both. I have learnt a new thing from you guys.

9 Monate ago | 0

Question


Multiplication of sparse matrix and a normal matrix
I have a Sparse Matrix : S The size of S is : 196608x4096 sparse double and the normal (Non Sparse) matrix : D The size of ...

9 Monate ago | 3 answers | 0

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Showing me wrong Matrix Size.
fds = fileDatastore(" " ); N= cell2mat(fds.Files); kk= ones(64,1); OO= N.*kk; I have created a Data store with a matlab ...

9 Monate ago | 2 answers | 0

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Out of memory issue
I have a sparse matrix which has a size of, (2031616x4096 sparse double). I want to make 10 subset of this matrix and need t...

9 Monate ago | 1 answer | 0

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Removing one length from a matrix
I have a matrix which size is , A= 256x256x31; And another Matrix (4D) ; B=2031616x64 [ 4D format is : ( 256x256x31)x64] ...

9 Monate ago | 1 answer | 0

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Creating Matrix Subset automatic.
I have a matrix, A which have a 9 row and 9 column. I need to make a subset from it. The prospective subset we need : S1= [ 1 ...

9 Monate ago | 1 answer | 0

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Extracting positive and negative element of a matrix?
Suppose; A= 3D Matrix of size (10,10,10) , where I have some values in positive and some values in negative. So, with that pos...

10 Monate ago | 1 answer | 0

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Question


OUT OF MEMORY PROBLEM
I have 3 data sets such as , SourceCords(16777216*3), DetectorCords(16777216*3),Voxel(16777216*3). Apart from the Voxel data res...

12 Monate ago | 1 answer | 0

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