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Angle between two 3D vectors
"I need to calculate angles between vector st_direction and each column vector from A matrix, for example:" st_direction =[0.63...

3年以上前 | 1

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Plotting a multivariable function
a_ft=28000; v_cal=0:500; CaltoTrue(a_ft,v_cal) function v_true=CaltoTrue(a_ft,v_cal) a=a_ft*0.3048; b=-0.0065; R=287.05287...

3年以上前 | 1

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Using a nested for loop to create a matrix that square roots positive integers and adds 30 to negative integers.
X=[4,-5,13;19,-13,21;-33,77,144] [r,c]=size(X); Y=zeros(length(X)); for i=1:r for j=1:c if X(i,j)>=0 ...

3年以上前 | 0

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how to make an image like this in matlab?
Pls refer the Steve Eddins blogs https://blogs.mathworks.com/steve/2015/12/14/image-based-graphs/

3年以上前 | 2

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Saving images in .FIG format from a source code
for loop i= figure,imshow(Image_file) file_name=['image',num2str(i),'.fig'] savefig(gcf,file_name); % Set an oth...

3年以上前 | 0

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Make a video from images in while loop
#Ensure that all images having same size & format images_data=dir('*.jpg') ; writerObj=VideoWriter('Video_test.avi'); % Chang...

3年以上前 | 0

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I don't know how to add the dots
x = [0 : 0.1 : 12] * pi; y = sin(x); z = cos(3 * x); figure(); plot3(x,y,z, '--d','color','b','markerfacecolor','y','markers...

3年以上前 | 0

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Fusion of colour PET /MRI image of brain
Important Note: Color is just an perception (Human Eye), color may vary person to person (minor changes in color contrast) There...

3年以上前 | 0

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How to merge matrix in a loop?
% Just example A=rand(4,3); B=rand(4,3); C=rand(4,3); D=rand(4,3); data_mat={A,B,C,D}; % Created to handle data easily N=4...

3年以上前 | 0

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Magic square (( please help))
result=2*magic(3) You have to look for any such possibility for odds too.For any random function or fixed values too, checking...

3年以上前 | 0

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How to save the values of variables during each iteration(for loop) in a single variable?
If output is numeric use Array output=zero(1,total iteration); % Pre-allocate the variable for iter i=1:... output(i)=....Cal...

3年以上前 | 1

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Can anyone check my code please?
Sufficints Hint: You can also do this in efficient way, I have shown work till D1 and D2, try the rest part yourself A1=randi(...

3年以上前 | 0

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How can I extract the numbers divisible by 3 from the diagonal of a nxn matrix composed of random integers?
n=input('Choose the number of lines and columns of the square matrix: ') A=randi([100,1000], n, n) D=diag(A) mat=D(mod(D,3)==...

3年以上前 | 1

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How do you write a function that imports data from an .xlsx file and saves the data as a .mat?
Load the data using readmatrix function https://in.mathworks.com/help/matlab/ref/readmatrix.html data_excel=readmatrix('file_...

3年以上前 | 0

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change the color of the pixels that are present in an image
It can be done in multiple ways, use morphological operations or see the regionprops function (very useful). Easyest way for spe...

3年以上前 | 0

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Exacting a constant range/window of values from a matrix (skipping one cell each time).
data=rand(1000,1); data(25:25:1000)=[]; temp=length(data)/24; cell_data=mat2cell(data,24*ones(1,temp))

3年以上前 | 0

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Crop frames in video and apply it on other frames.
As per question you have already done video to frame splits let's consider im1 and im2 have same size images, rxcx3 unit 8 type....

3年以上前 | 0

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How do I plot this series?
Change the upper bound value to any finite number f = symsum(an.*cos(100*n*pi*t) + bn.*sin(100*n*pi*t),n,1,100); %..............

3年以上前 | 0

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How to set to zero specific elements of a 3D array?
Here if the voxel element is equal to 4, 5 & 50..so on. , all such voxels element will be replaced by 0 (Zero) data= % #3D Arra...

3年以上前 | 0

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How can i get the points within a space defined by vectors (0,0,0), (2,4,1),(0,0,2),(-2,4,-1)?
po=[randi([-2,2]),randi([0,4]),randi([-1,2])]

3年以上前 | 0

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How to calculate peak value and duration of signal in Image
There are many threds sillimar quaestions, calculate the FWHM and time duration of the signal, please refer https://in.mathwor...

3年以上前 | 0

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How to store a color and location in a matrix?
#Easy way (Not Efficient too) test_image=imread('image_file_name.jpeg'); %Change the image file name with format [rows,clom,ch...

3年以上前 | 0

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Finding unique closest point corresponding to latitude and longitude vectors for a given point with shortest distance.
#It can verify from plot too, pls modify as per requirments- PQ=[39.2591200000000 -85.9394200000000 39.2591300000000 ...

3年以上前 | 0

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using kalman filter in medical images
Please refer the following link to study about Kalman Filter (MATLAB) https://in.mathworks.com/help/vision/ug/using-kalman-filt...

3年以上前 | 0

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How to convert structure to gray image
Read the individual cell array data element, apply image function % cell_element=.... % image(cell_element) % axis off; You ...

3年以上前 | 0

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Merge two arrays w/o for-loop. Speed-up
B1 = [52, 52, 52, 52] B2 = [0.437288188, 0.437288188, 0.437288188, 0.437288188] C=B1+B2

3年以上前 | 0

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Using while loop in a video
vid=VideoReader('video.mp4'); frame_num=vid.NumFrames; frame_format='.jpg'; vid=read(vid); for i=1:frame_num %Initial Level:...

3年以上前 | 0

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Write code to print ten columns of every number between 1 to 10
Read at MATLAB Docs randi function %Hint: data=randi([1,10],[1,10]) %random array-10 columns between 1 to 10 result=repelem(...

3年以上前 | 0

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How to generate an array based on the values of another array?
A=[1 3;3 1;2 4;4 3] B=A; A(B==2)=4; A(B==1)=3; A(B==3)=2; A(B==4)=1; A

3年以上前 | 0

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How to save multiple vector signals in one variable using wavelet Denoising?
F data can be store in cell array. F=cell(1,60); for i = 1:60; x = y(i,:) ; F{i}= wden(x,'rigrsure','s','mln',5,'d...

3年以上前 | 0

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