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how to open mat file
I have a .mat file which is supposed to contain data for being able to plot the air pressure in lungs vs time, as well as a few ...
etwa 9 Jahre vor | 1 Antwort | 1
1
AntwortFrage
3-D matrix transpose
Hello I have a 3-D matrix and I want to take the transpose of each individual vector. This is what I want to do: transpose...
mehr als 9 Jahre vor | 2 Antworten | 1
2
AntwortenFrage
subplot command for plotting images
I have a 45x45x45 array of images which I would like to view at once by using the subplot command. However when I am using subpl...
mehr als 9 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
equality of an array
I have two arrays. A is 46x46; B is 45x45. I want to check if the first 45 rows and 45 columns in A are equal to the 45x45 B ...
mehr als 9 Jahre vor | 1 Antwort | 0
1
AntwortFrage
opening a .rec file
I have a .rec file which is supposed to be a reconstructed SPECT image of a point source. I am trying to open it up in matlab. ...
mehr als 9 Jahre vor | 1 Antwort | 0
1
AntwortFrage
MATLAB functions and subfunctions
I have a matlab function file which contains the main function which calls on many subfunctions. I would like to look at the out...
mehr als 9 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
FOR loop control structure
I have written this code: for k=5:2:13 fprintf('The square of %d is %d.\n',k,k^2) end I have been trying to un...
mehr als 9 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
logical operators in if statement
I have a code that looks like for x = 1:7:length(list) if(list(x+2)>0 && list(x+2)<1024) energys(l...
mehr als 9 Jahre vor | 3 Antworten | 0
3
AntwortenSPECT/PET image processing code
Here is the attachment of the SPECT code
mehr als 9 Jahre vor | 0
| akzeptiert
Frage
SPECT/PET image processing code
I was assigned with understanding the inner workings of a matlab code used for SPECT image processing. This code takes multiple ...
mehr als 9 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
linear system of equations
I am trying to use 'solve' to solve this system of equations: solve('5*x+6*y=5','10*x+12*y=10') and I get the a return s...
fast 10 Jahre vor | 2 Antworten | 0
2
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vpasolve for numerical solution
Hello I am trying to find a solution to the equation: 1= 0.95*2*invtan(4.5/2*r)*r/(4.5) for the unknown r that satisfies t...
fast 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
help with numerical integration
I want to numerically integrate a function where a parameter is varied. This is what my code looks like: y=0:0.0001:30.5; ...
etwa 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
introducing a new variable
I am trying to introduce a new variable that is in terms of a variable that is known. r''=(-b/a)*r where r is just a row ...
mehr als 10 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
plot of inverse fourier transform
I am trying to plot the inverse fourier transform of a function and I want this plot to be centered at zero. This is the followi...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
2D normal distribution with variable array
I am trying to make a 2D vaiable array in 'r' so that I can generate a 2D normal distribution. I have the code for the 'r' ar...
mehr als 10 Jahre vor | 0 Antworten | 0
0
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graphing a fourier transform function
I have a function: f=gaussmf(x,[3,10]), and wanting to plot the magnitude if its fourier transform. I am defining the frequency,...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
plotting data points at unevenly spaced intervals
I am wanting to plot data so that the independent variable is multiplied by a factor of 0.025 starting with the independent vari...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
convolution of two functions
I want to convolve two functions: f=inline('gaussmf(x,[3,0])','x') h=inline('normpdf(x,0,4)','x') So the conv will not ...
mehr als 10 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
How do I map an array to grayscale colormap?
I have an array of numbers and would like to: 1) map 0 to a display intensity of 0 and the highest value in the array to whit...
mehr als 10 Jahre vor | 2 Antworten | 1
2
AntwortenFrage
Area under a curve from a set of data points
Hello I have a 'n x 8' matrix with with each column representing the radioactivity in a certain organ and the rows correspon...
etwa 11 Jahre vor | 1 Antwort | 0
1
AntwortFrage
how do i plot a solved diff eq with coefficients after the diff eq is solved
Hello This is a post in follow up of discussion I began with user name Bruno, Torsten... The original problem was this: I...
etwa 11 Jahre vor | 0 Antworten | 0