Community Profile

# KSSV

### INCOIS

6.711 total contributions since 2011

Professional Interests: Mathematical Computing

View details...

Contributions in
View by

converting 2D XY coordinated into Grid format
It depends whether your data is gridded or scattered. Follow the below code to get what you want. Let A be your m*2 array. x =...

etwa 20 Stunden ago | 0

Area of intersection of two ellipses
You can follow the below steps. For the two ellipses i.e get coordinates of both the ellipses. Let L1, L2 be your coordinates ...

ein Tag ago | 0

Common numbers between arrays

ein Tag ago | 1

I can’t get the program to run for some reason. I want to use for loops for this program.
You need not to use two for loops.....that is a wrong idea. This is what you should do: Ti = 0; Tinc = pi/180; Tf = pi...

2 Tage ago | 0

need Matlab program to count the number of lines until dollar sign is given

2 Tage ago | 0

Single line of code for vectorization, Need Help!!
r = [0.1 0.2 0.3 0.4 0.5] ; h = [0.2 0.3 0.4 0.5] ; [r,h] = meshgrid(r,h) ; v = 1/3*pi*r.^r.*h ;

2 Tage ago | 0

How do you detect duplicate values within a random array?
If you want to use inbuilt functions......you can use unique. Read about it. Let A be your array. B = unique(A) ; if lengt...

2 Tage ago | 0

| accepted

Plotting question using data (water saturation)
sat_data = water_sattemp_data ; plot(sat_data(:,1),sat_data(:,2)) ;

2 Tage ago | 0

Adding Array elements from one element to another
Let A be your array. iwant = sum(A(487146:513795)) ;

2 Tage ago | 0

| accepted

Identifying the circle that fits the outer white pixels in a binary image (or make external mask)
I = imread("SampleXRmorph.PNG"); [y,x] = find(I) ; % Get center of cricle C = [mean(x) mean(y)] ; % GEt raidus d = sqrt...

6 Tage ago | 1

| accepted

How to fill the area between contour line and upper bound.
Get your required curve/ line coordinates; form a closed polygon and use patch/ area.

6 Tage ago | 1

How to divide vector to matrix(same row and column)
To remove extra elements and convert to square matrix A = rand(82580526,1) ; l = length(A) ; % GEt the nearest perfect squ...

6 Tage ago | 0

| accepted

Plotting user inputs in a 2D plot
prompt = 'Enter any number that you like:'; %{ I only want the user to enter a maximum of 10 numbers. %} N = 10 ; figure...

7 Tage ago | 0

| accepted

2D plot of a matrix
Read about importdata to load the data into MATLAB. You can normalize an array x to [0,1] using: norm_x = (x-min(x))/(max(x)-...

8 Tage ago | 0

| accepted

how to write a for loop in this case?
daily_tmax = cell(length(tmax),1) ; for i = 1:length(tmax) daily_tmax{i} = squeeze(mean(reshape(tmax{i}, size(tmax{i}, 1)...

8 Tage ago | 1

| accepted

Read spesific rowintervals from .txt file and store them
I = [12 40 68] ; iwant = cell(length(I),1) ; for i = 1:length(I) C = textscan(fid,'%.6f %.6f',npoints,'delimiter','\n',...

8 Tage ago | 0

How do I plot a line graph from scatter plot?
clc clear all A = 0.05; l_r = 2; %Wave length of the road v = 45; %Speed(m/s) P = l_r/v; %Period %Om = 1/P*2*pi; %Forcin...

9 Tage ago | 1

| accepted

For loop using strings
Let A be your data of size m*3. for i = 1:3 [pks_x_sit1,locs_x_sit1] = findpeaks(A(:,i),'MinPeakHeight',1.25); nr_...

9 Tage ago | 0

| accepted

How to graph using a for loop
YOu need not use a loop as the other user has suggested you. If you use a loop, you need to intiilaize the array and save it in ...

9 Tage ago | 1

| accepted

How to get all values existing in arrays/matrices?
Read about unique a = myArray(:) ; [cnt_unique, unique_a] = hist(a,unique(a)) ;

9 Tage ago | 1

In an image to set reference coordinate and get coordinates of color points .
If I is your matrix of image ..use [y,x] = find(I==val) ; where val is your pixel value you want. If I is m*n*3 RGB image....

9 Tage ago | 0

| accepted

Create random paths between two known points in 3D
A = [0,0,0] ; B = [1,1,1] ; N = 10 ; x = (B(1)-A(1)).*rand(N) + A(1); y = (B(2)-A(2)).*rand(N) + A(2); z = (B(3)-A(3)).*...

12 Tage ago | 0

How to change from cell to array

13 Tage ago | 0

how to detect border irregularity?
If (x,y) are your boundary points. % Get bounding box x0 = min(x) ; x1 = max(x) ; y0 = min(y) ; y1 = max(y) ; % A = [...

13 Tage ago | 0

Inf or NaN vaiues normalize into [0 1]
use xnew = (x-xmin)/(xmax-xmin)

14 Tage ago | 0

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side. Error in Q38 (line 10) Mat(row,col)=t1
You have to intilize them either as a cell or matrix. I am intializing as cell. check below: %Questions#38 clc clear close ...

14 Tage ago | 0

What is difference between indexing using ".var" and "{}"?
.var is to access fields of structures. {} is to access cells. Read about structures and cells.

14 Tage ago | 0

I want someone who can help me to see a grid and airfoil in the same plot , here is my code
clear all; close all; clc; Mi=0.5; T=300; P=1; gamma = 1.4; R=287; vinf = sqrt(gamma*R*T)*Mi; Nx = 100; % x ...

15 Tage ago | 0

| accepted

How to quickly find the first non-zero element without iterations in all columns in a sparse matrix?
[val,id] = min(abs(A)) ; Use the minimum function.

15 Tage ago | 0