https://sites.google.com/site/kolukulasivasrinivas/

Professional Interests: Mathematical Computing

Answered

how should i plot these data?

data = xlsread('Book1.xlsx') ; x = data(:,1) ; y = data(:,2) ; plot(x, y); % a basic monochrome plot % Trick surfac...

how should i plot these data?

data = xlsread('Book1.xlsx') ; x = data(:,1) ; y = data(:,2) ; plot(x, y); % a basic monochrome plot % Trick surfac...

circa 21 ore ago | 0

| accepted

Answered

How can I solve randperm error with words?

Tile = {'house', 'core', 'word', 'ask', 'question', 'horse', 'phone', 'eyes', 'hair', 'man'}; % Gives random arrangement X =...

How can I solve randperm error with words?

Tile = {'house', 'core', 'word', 'ask', 'question', 'horse', 'phone', 'eyes', 'hair', 'man'}; % Gives random arrangement X =...

circa 22 ore ago | 0

Answered

Extract data from CSV files

Read about xlsread, csvread, readtable functions.

Extract data from CSV files

Read about xlsread, csvread, readtable functions.

circa 24 ore ago | 0

Answered

Dimensionality reduction on matrices with missing entries

[coeff,score,latent] = pca(mymatrix) here latent gives you variance of the principal components in decreasing order. You can pi...

Dimensionality reduction on matrices with missing entries

[coeff,score,latent] = pca(mymatrix) here latent gives you variance of the principal components in decreasing order. You can pi...

circa 24 ore ago | 0

Answered

Merge Csv files.

csvfiles = dir('*.csv') ; N = length(csvfiles) ; iwant = cell(N,1) ; for i = 1:N iwant{i} = xlsread(csvfiles(i).name)...

Merge Csv files.

csvfiles = dir('*.csv') ; N = length(csvfiles) ; iwant = cell(N,1) ; for i = 1:N iwant{i} = xlsread(csvfiles(i).name)...

1 giorno ago | 0

Answered

is there any idea on how to compare an .xls file and .csv file?

Load bot the data into MATLAB using xlsread. Get the common strings using ismemebr, contains

is there any idea on how to compare an .xls file and .csv file?

Load bot the data into MATLAB using xlsread. Get the common strings using ismemebr, contains

1 giorno ago | 0

Answered

I want to convert 3D (6x4x5 double) data to 2D data

A = rand(2,2,3) ; out = reshape(permute(A, [2 1 3]), size(A, 2), [])'

I want to convert 3D (6x4x5 double) data to 2D data

A = rand(2,2,3) ; out = reshape(permute(A, [2 1 3]), size(A, 2), [])'

1 giorno ago | 0

| accepted

Answered

Pca built-in function and how its works?

REad abut Singula Value DEcomposition. svd . And refer this for more clarity: http://www.cs.otago.ac.nz/cosc453/student_tutori...

Pca built-in function and how its works?

REad abut Singula Value DEcomposition. svd . And refer this for more clarity: http://www.cs.otago.ac.nz/cosc453/student_tutori...

1 giorno ago | 0

| accepted

Answered

how to draw bounding box?

Read about rect https://in.mathworks.com/help/matlab/ref/rectangle.html

how to draw bounding box?

Read about rect https://in.mathworks.com/help/matlab/ref/rectangle.html

1 giorno ago | 0

| accepted

Answered

formulation of square matrix

A = magic(3) ; B = cell(5,5) ; B(:) = {A} ; B = cell2mat(B)

formulation of square matrix

A = magic(3) ; B = cell(5,5) ; B(:) = {A} ; B = cell2mat(B)

2 giorni ago | 0

| accepted

Answered

Converting Photos to a Video

To convert images into frame follow: I = imread('peppers.png') ; imshow(I) F = getframe ; rgb = frame2im(F) ; imshow(r...

Converting Photos to a Video

To convert images into frame follow: I = imread('peppers.png') ; imshow(I) F = getframe ; rgb = frame2im(F) ; imshow(r...

2 giorni ago | 0

Answered

"Index in position 1 exceeds array bounds (must not exceed 1)." Error

Problem is with your BIP. It shoule be cXc matrix i.e it shoule be 2X2 for your inputs. You have entered it as 1X2, so the error...

"Index in position 1 exceeds array bounds (must not exceed 1)." Error

Problem is with your BIP. It shoule be cXc matrix i.e it shoule be 2X2 for your inputs. You have entered it as 1X2, so the error...

3 giorni ago | 1

| accepted

Answered

how can I convert cell to double

load temp.mat ; iwant = cell2mat(temp')

how can I convert cell to double

load temp.mat ; iwant = cell2mat(temp')

3 giorni ago | 0

| accepted

Answered

How measure distance from center of the image to the object

YOu can measure the distance from center of the object to center of the image as below: I = imread('object_with problem.png'...

How measure distance from center of the image to the object

YOu can measure the distance from center of the object to center of the image as below: I = imread('object_with problem.png'...

3 giorni ago | 0

| accepted

Answered

Match each element of one array with each element of other array without loops

Read about ismember, ismembertol and knnsearch.

Match each element of one array with each element of other array without loops

Read about ismember, ismembertol and knnsearch.

3 giorni ago | 0

Answered

Converting a mat grid file to xyz

A = rand( [180,360,117) ; for i = 1:117 T = A(:,:,i) ; iwant = T(:) end

Converting a mat grid file to xyz

A = rand( [180,360,117) ; for i = 1:117 T = A(:,:,i) ; iwant = T(:) end

3 giorni ago | 0

Answered

How to connect dots on graph?

E1=[0.229711113281264;0.244475859375016;0.261230097656256;0.283730156249987;0.311849589843713;0.344379609374935;0.37915166015615...

How to connect dots on graph?

E1=[0.229711113281264;0.244475859375016;0.261230097656256;0.283730156249987;0.311849589843713;0.344379609374935;0.37915166015615...

3 giorni ago | 0

| accepted

Answered

Find overlap from two scatter plots

This problem can be solved with ease using knnsearch. Read about this function. YOu can get the nearest points in A for each poi...

Find overlap from two scatter plots

This problem can be solved with ease using knnsearch. Read about this function. YOu can get the nearest points in A for each poi...

3 giorni ago | 1

| accepted

Answered

creating an column vector of value which is obtained from 3rd position of multiple text files

A = rand(5) ; B = sort(A) ; iwant = B(3,:)

creating an column vector of value which is obtained from 3rd position of multiple text files

A = rand(5) ; B = sort(A) ; iwant = B(3,:)

3 giorni ago | 0

Answered

combining different csv files from a folder into one matrix

csvfiles = dir('*.csv') ; iwant = zeros(1554,801) ; for i = 1:length(csvfiles) data = csvread(csvfiles(i).name) ; ...

combining different csv files from a folder into one matrix

csvfiles = dir('*.csv') ; iwant = zeros(1554,801) ; for i = 1:length(csvfiles) data = csvread(csvfiles(i).name) ; ...

3 giorni ago | 0

Answered

Delete rows in cell arrays

load CellBdS.mat ; s = rawPortData{1}.INDX_MWEIGHT_HIST ; s = s{1} ; c1 = s(:,1) ; % delete first row c1(1) = [] ; % a...

Delete rows in cell arrays

load CellBdS.mat ; s = rawPortData{1}.INDX_MWEIGHT_HIST ; s = s{1} ; c1 = s(:,1) ; % delete first row c1(1) = [] ; % a...

4 giorni ago | 1

| accepted

Answered

Simple Monte Carlo Taking Too Long

Don't print the result in workspace. Terminate the output using ; Initialize the arrays which are getting filled in loop. i...

Simple Monte Carlo Taking Too Long

Don't print the result in workspace. Terminate the output using ; Initialize the arrays which are getting filled in loop. i...

4 giorni ago | 0

| accepted

Answered

How can i extract and store colums from my data

data = importdata('data.txt') ; id = data(:,1) ; [c,ia,ib] = unique(id) ; N = length(c) ; iwant = cell(N,1) ; for i ...

How can i extract and store colums from my data

data = importdata('data.txt') ; id = data(:,1) ; [c,ia,ib] = unique(id) ; N = length(c) ; iwant = cell(N,1) ; for i ...

4 giorni ago | 0

| accepted

Answered

3d Animation of a point

[num,txt,raw] = xlsread(myfile) ; x = num(:,1) ; y = num(:,2) ; z = num(:,3) ; comet3(x,y,z)

3d Animation of a point

[num,txt,raw] = xlsread(myfile) ; x = num(:,1) ; y = num(:,2) ; z = num(:,3) ; comet3(x,y,z)

4 giorni ago | 0

Answered

Merging Multiple text files

txtfiles = dir('*.txt') ; ncfile = 'myfile.nc' ; N = length(txtfiles) ; nx = 455 ; ny = 455 ; % number of lat, lon for ...

Merging Multiple text files

txtfiles = dir('*.txt') ; ncfile = 'myfile.nc' ; N = length(txtfiles) ; nx = 455 ; ny = 455 ; % number of lat, lon for ...

4 giorni ago | 1

| accepted

Answered

Why is subtracting different sized matrices not giving me an error? What is matlab calculating?

What you are doing is not correct. Note that fft_x - sxx will be a matrix of size 1000X3328. It will subtract the respective ...

Why is subtracting different sized matrices not giving me an error? What is matlab calculating?

What you are doing is not correct. Note that fft_x - sxx will be a matrix of size 1000X3328. It will subtract the respective ...

4 giorni ago | 0

Answered

Plotting Latitude, Longitude and a variable

[num,txt,raw] = xlsread('sample_data.xlsx') ; lat = num(:,1) ; lon = num(:,2) ; z = num(:,3) ; z(z>500) = NaN ; s...

Plotting Latitude, Longitude and a variable

[num,txt,raw] = xlsread('sample_data.xlsx') ; lat = num(:,1) ; lon = num(:,2) ; z = num(:,3) ; z(z>500) = NaN ; s...

4 giorni ago | 0

| accepted

Answered

Reading in an Entire Video

vidObj = VideoReader('C:\Users\Public\Videos\Sample Videos\Wildlife.wmv'); numFrames = 0; iwant = cell([],1) ; while hasFram...

Reading in an Entire Video

vidObj = VideoReader('C:\Users\Public\Videos\Sample Videos\Wildlife.wmv'); numFrames = 0; iwant = cell([],1) ; while hasFram...

4 giorni ago | 0

Answered

Index of point in matlab plot

x = rand(10,3); y = rand(10,3); hold on plot3(x(:,1),x(:,2),x(:,3),'R.') plot3(y(:,1),y(:,2),y(:,3),'B.') idx = knnsear...

Index of point in matlab plot

x = rand(10,3); y = rand(10,3); hold on plot3(x(:,1),x(:,2),x(:,3),'R.') plot3(y(:,1),y(:,2),y(:,3),'B.') idx = knnsear...

5 giorni ago | 0