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Rachel Dawn
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Question
How to convert Matlab cell array into Python numpy array?
In matlab, I generate a random # of images of the shape (130,100) and save them one by one in a cell array. I then need to impor...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
How to convert Matlab Cell Array into Python Numpy Array?
In matlab, I generate a random number of images, each of the shape (130,100). In this case, the number of images generated was 9...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
How to output maximum displacement from this topology optimization function?
I'm using this 'top99neo' topology optimization code to generate structures: top99neo . The code generates a compliance value,...
presque 2 ans il y a | 1 réponse | 0
0
réponseQuestion
How can I smooth out the voids/holes created with topology optimization algorithm?
I'm using this 'top99neo' topology optimization code to generate the following structures: top99neo As talked about in the pape...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Matlab function (fsparse) from github produces an error- why?
So, I'm calling the function "top99neo.m" from this research paper: https://www.topopt.mek.dtu.dk/Apps-and-software/New-99-line-...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Plotted image is clear but saved image is blurry- why?
I'm using the 99 line topology optimization code (found here -click the link "top.m"). When I run the following code in a sepa...
environ 2 ans il y a | 2 réponses | 1
2
réponsesQuestion
Why does modified 99 line topology optimization code outputs blurry images?
Hello, So, I modified the 99 line topology optimization code found here , so that it has the following boundary conditions (see...
environ 2 ans il y a | 1 réponse | 0
0
réponseQuestion
How to generate a matrix of random decimal values from -1 to 1?
I want to generate a 8x10 matrix full of random decimal values from -1 to 1, each with EXACTLY 6 decimal places (i.e 0.523483, -...
presque 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to convert "64x128 single" into "64x128 double"?
I imported an array from python with this shape: (5, 25, 64, 128, 1) It's 5 sets of 25 images that are 64x128. I tried plotting ...
environ 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to define multiple constraints for fmincon?
Hi, I'm trying to minimize the formula below. I've done most of the code except I can't quite figure out how to account for the ...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to convert a matrix into a vector that has each row as an array?
For example, say that I have this matrix: [a b c d; e f g h; i j k l] To use in python (and to save as .npy), I need the foll...
plus de 3 ans il y a | 2 réponses | 0
2
réponsesQuestion
Error when calling a jupyter notebook file from matlab
So, I'm trying to run a jupyter notebook file from a matlab script: status = system("runipy K-meansCBeam.ipynb") *runipy i...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I run a jupyter notebook script from matlab?
I already tried running matlab from jupyter using Oct2Py but it didn't work (error after error). So, I'm wondering if I can use...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to convert image file name "1.jpg" into a string or # in a list, list= [1]
SIMPLE QUESTION: How to convert a image file name "1.jpg" into a string or # "1"? Ignore what's below (unless you have the time...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to save images from for loop to use for machine learning algorithm?
I have a for loop that generates a different image each time it loops. I want to save each of these images to input them into a...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to save each image generated in a for loop?
for i=1:20 volume=randi([2 10], 1,1) location=randi([10 100], 1, 1) imagegenerator(volume,location) end ^...
plus de 3 ans il y a | 2 réponses | 0
2
réponsesQuestion
Unrecognized function or variable 'phload.'
numdesigns=5 nelx=30; nely=30; for i=1:numdesigns volfrac=round((.3+(.8-.3)*rand(1,1)),1); %random # from .3 to .8 ...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to automatically add/subtract lines of code into a matlab function for several iterations?
So, I have this topology optimization function (models a beam problem with supports/loads on it). It takes 5 input variables a...
presque 4 ans il y a | 1 réponse | 0
0
réponseQuestion
How to fit a lorentzian function to this raw data?
My research mentor asked if I could help him curve fit the Lorentzian to some raw data. Disclaimers: 1) I have no experience wi...
plus de 5 ans il y a | 1 réponse | 0
0
réponseQuestion
Simpson's Rule to find total work
If I'm given time=[0,#,#,#,#,#] and velocity=[#,#,#,#,#,#] and Force=[#,#,#,#,#,#], how could I use Simpson's rule to find t...
plus de 6 ans il y a | 1 réponse | 0
0
réponseQuestion
Trapezoidal rule to find total work?
I'm given 6 values for time, Force, and velocity. And I'm told to find total work with trapezoidal rule. (first time value is ze...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
Least squares Exponential fit using polyfit
Let's say I'm given x=[11,60,150,200] and y=[800,500,400,90] These are just random numbers (but imagine the solution is in the ...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
Why can't I put two equations in one function file?
function a,b=myfunction(x) a= @(x) 5-5*exp((1/3)*x) + (16- x^2)^(1/2) b= @(x) (-5/3)*exp((1/3)*x) - (16- x^2)^(-1/2) ...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
bisection method disadvantage?
So, I wrote code for a function to find its roots using the bisection method. I used initial guesses x=4 and 6, knowing that the...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
false position method to find zeros, not plotting zeros
Can someone tell me why this code is not finding/ plotting the roots for my function? I created a plot for function. Then, I wr...
plus de 6 ans il y a | 1 réponse | 0
0
réponseQuestion
function that accepts vector
Can someone explain why I must use ".^" in the first function but then ".*" in the second? (for both to accept vectors and scala...
plus de 6 ans il y a | 1 réponse | 0
0
réponseQuestion
Function won't accept vector
function result = g(x) result= (2*x*exp(cos(6*x))*exp(-x)) + 15 " Error using * Inner matrix dimensions must agree." ...
plus de 6 ans il y a | 2 réponses | 0
2
réponsesQuestion
bisection method error between approximation and actual root
Does anyone know what this question is asking? "How many iterations of the bisection would be needed to ensure that the error b...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
subscript indices error with function file (bisection method)
function result=guess(x) xleft=x(1,1); xright=x(1,2); f(x)= x.^3 - 4.9*x.^2 +6.76*x-2.013 if f(xleft)*f(xright)<0 ...
plus de 6 ans il y a | 2 réponses | 0
2
réponsesQuestion
Determine if valid initial guess for closed numerical method
If I'm given a function f(x), how can I determine whether say [0 1] or [1,2 ] are valid initial guesses for a closed numerical m...
plus de 6 ans il y a | 1 réponse | 0