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KSSV


Last seen: Today Active since 2011

https://sites.google.com/site/kolukulasivasrinivas/
Professional Interests: Mathematical Computing

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Answered
Determination of x,y values (in km) in an area with known Latitudes and Longitudes
Read about polyarea.

ungefär 17 timmar ago | 0

Answered
how to find features from '.txt' files?
txtFiles = dir('*.txt') ; N = length(txtFiles) ; meanGL= zeros(N,1); varianceGL = zeros(N,1) ; sd = zeros(N,1) ; skew = z...

ungefär 18 timmar ago | 0

| accepted

Answered
How to mark range of Y values in a plot?
AStudent=randi(50,1,100); BStudent=randi(50,1,100); CStudent=randi(50,1,100); DStudent=randi(50,1,100); figure hold on p...

ungefär 20 timmar ago | 0

| accepted

Answered
Integration of exponential function
syms t y(x) f = y(x)*exp(-2*(t-x)) ; int(f,x,0,t)

ungefär 20 timmar ago | 0

Answered
How do I find max values in a vector
v=[1, 3, 5, 2, -4, -3, -1, 2, 3, 1, 2, -3, -2, -4] ; iwant = [max(v(v>0)) min(v(v>0)) max(v(v<0)) min(v(v<0))]

en dag ago | 0

Answered
plotting multiple vertical lines on a graph
figure(1) cla; scatter(x(:,a),y(:,a)) xlabel('X Coordinates') ylabel('Y Coordinates') title('Particle locations in the rice...

en dag ago | 0

| accepted

Answered
I want to change xlim,ylim of axes , and draw a circle at the point I chose when I click on a place in the axes in GUI
th = linspace(0,2*pi) ; R = 1. ; % Radius of circle x = R*cos(th) ; y = R*sin(th) ; figure axis([-5 5 -5 5]) ; % cahange...

en dag ago | 0

Answered
Output of [~,IDX] = max(...) not in DOUBLE but in INT.
You can convert double into integer using int32 ot int64.

en dag ago | 0

Answered
How to plot a curve between 2 data sets
P1=[2.3;3.9;3.5;4.8;5.5;6.3;7.4]; P2=[4.8;5.7;6.5;7.8;9.2;10.5;11.8]; D=[78;65;57;52;46;32;27]; %% Dp=P2-P1; Q=0.24*D; % ...

en dag ago | 0

Answered
How to insert variables (string) in MATLAB function
syms t R=[1 0 0;0 cos(t) -sin(t); 0 sin(t) cos(t)]

en dag ago | 0

Answered
Monthly Time Series Plot
You can do intepolation by creating your required time stamps or use the inbuilt function retime. https://in.mathworks.com/help...

en dag ago | 0

Answered
How to change output format 20 culumn!
r = 2; % number of rows c = 30 ; % number of columns M=rand(r,c)

en dag ago | 0

Answered
How do I plot quivers on a curve?
If you are expecting colors based on the magnitude use this: https://in.mathworks.com/matlabcentral/fileexchange/3225-quiverc

2 dagar ago | 0

Answered
generate column array with day in year number for each hour in a year
r=repmat(0:364,24,1) ; r=r(:);

5 dagar ago | 2

| accepted

Answered
How to find how many intersections in a graph?
Refer this function: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections

5 dagar ago | 0

| accepted

Answered
how to repeat an input question
A = 'start' ; while ~strcmpi(A,'end') N=input('what is N?: ') %establishes N A=input('give me a sentence!: ','s'); %a...

5 dagar ago | 0

Answered
Find a y axis increasing point in a plot -
Let y be your array. idx = find(y==1) ; iwant = idx(1)-1

5 dagar ago | 0

Answered
Convert an integer into a decimal number
m=2 m/10 If your class of variable is int32 or int64 i.e. an integer. Then convert it to float using double. m = int64(2) ...

6 dagar ago | 0

| accepted

Answered
Can you create a matrix where every element is a vector?
You can consider each element as a cell. And then create a cell array. But why? A = cell(2) ; A{1,1}=rand(1,3) ; A{1,2}=rand(...

6 dagar ago | 0

| accepted

Answered
Problem using fft();
Remove the mean from the data and then use fft. Say A is your data, (array). For fft use: A = A-mean(A) ;

6 dagar ago | 0

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Answered
How to plot NaN value
idx = isnan(A) ; A(idx) = 0 ; surf(A) view(2)

6 dagar ago | 0

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Answered
How to find all intersections in a Matlab graph?
USe this file exchange: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?requestedDomain=

6 dagar ago | 0

Answered
Storage results in an array
x=[2,3,4,5,6]; y=zeros(size(x)) ; for i = 1:length(x) if x(i)>4 y(i)=x(i)^2 else y(i)=x(i)+2 ...

6 dagar ago | 0

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Answered
What does 'li' mean?
1i stands for complex number. i.e. sqrt(-1). c=2+3*i c=2+3*1i

6 dagar ago | 0

Answered
how can I extract 2D matrices for xy, xz, yz planes from a 3D matrix and use the pcolor function?
Read about slice. This is your function.

6 dagar ago | 0

| accepted

Answered
How to read the desired coordinates from this image and find the coordinates with the highest value
You have plotted this image with the coordinates in hand. USe max function to get the maximum value. Read about function max. ...

7 dagar ago | 0

| accepted

Answered
How do I plot and return the values of multiple intersections between a function and zero?
You can consider using this: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections

7 dagar ago | 0

Answered
find minimum from cell array
T = readtable('my_excel.xlsx') ; [val,idx] = min(T.(2)) ; % get minimum from col2 iwant = T.(1)(idx) ; % get the value I...

7 dagar ago | 0

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Answered
I have matrix A and I need to find (e^(At)) where t is the sampling time. How to find that? Also what is the difference between exp(A) and expm(A)?
A = rand(2) ; t = linspace(0,1) ; iwant = zeros(2,2,100) ; for i = 1:100 iwant(:,:,i) = exp(A*(t(i))) ; end exp might ...

7 dagar ago | 0

Answered
how to visualize a data with lon, lat and time array
file = 'EDGAR_HTAP_emi_NOx_2010.0.1x0.1.nc' ; x = ncread(file,'lon'); y = ncread(file,'lat'); Z = ncread(file,'emis_tot') ;...

7 dagar ago | 1

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