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

Professional Interests: Mathematical Computing

Answered

plotting using for loop

You need not to use a loop to get what you want. Already you are using .* i.e. eleemnt by element operation so , you can proceed...

plotting using for loop

You need not to use a loop to get what you want. Already you are using .* i.e. eleemnt by element operation so , you can proceed...

alrededor de 3 horas ago | 0

Answered

How to plot summation equation

You need to proceed like below: n = 1000 ; % you can change it if you want % define your constant values below k = 1 ; ...

How to plot summation equation

You need to proceed like below: n = 1000 ; % you can change it if you want % define your constant values below k = 1 ; ...

alrededor de 3 horas ago | 0

Answered

As shown in the picture，how to fit discrete points to a closed curve?

Your points are no tin an order....first make them into an order using boundary. load data1.mat ; x = data1(:,1) ; y = data1...

As shown in the picture，how to fit discrete points to a closed curve?

Your points are no tin an order....first make them into an order using boundary. load data1.mat ; x = data1(:,1) ; y = data1...

alrededor de 4 horas ago | 0

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Answered

Plotting 3 outputs on the same graph

Run a loop and save it into a matrix and plot at the end. %% Part 7 clc; clear; close; Ur_M=53; m1=Ur_M/12.33; m2=Ur_M/12.33...

Plotting 3 outputs on the same graph

Run a loop and save it into a matrix and plot at the end. %% Part 7 clc; clear; close; Ur_M=53; m1=Ur_M/12.33; m2=Ur_M/12.33...

alrededor de 4 horas ago | 1

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Answered

How to plot a surf-plot without data extrapoation?

You have the black line in hand.. make a closed polygon out of it and get the indices of the points lying inside and outside usi...

How to plot a surf-plot without data extrapoation?

You have the black line in hand.. make a closed polygon out of it and get the indices of the points lying inside and outside usi...

alrededor de 5 horas ago | 0

Answered

how to i check if matrix cotaining logical 1

A = [1 0 0]; B = logical(A) ; if any(B); disp('super') else disp('not good') end

how to i check if matrix cotaining logical 1

A = [1 0 0]; B = logical(A) ; if any(B); disp('super') else disp('not good') end

alrededor de 16 horas ago | 0

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Answered

Matrix dimensions must agree spread spectrum code

The error is simple...you need to check the dimensions of your variables spreaded_sig and carrier. To use element by element mul...

Matrix dimensions must agree spread spectrum code

The error is simple...you need to check the dimensions of your variables spreaded_sig and carrier. To use element by element mul...

alrededor de 16 horas ago | 0

Answered

How do i plot matrix in spectogram

You can use pcolor, imagesc. Read about pcolor.

How do i plot matrix in spectogram

You can use pcolor, imagesc. Read about pcolor.

alrededor de 16 horas ago | 0

Answered

plot an arc between two points

First get the radius of sphere....I hope center is (0,0,0). To get radius use:

plot an arc between two points

First get the radius of sphere....I hope center is (0,0,0). To get radius use:

alrededor de 17 horas ago | 0

Answered

How to get ones out of matrix

a = [0 1 1 0] ; idx = find(a==1)

How to get ones out of matrix

a = [0 1 1 0] ; idx = find(a==1)

alrededor de 17 horas ago | 0

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Answered

How to plot non equally spaced data in an equally spaced fashion and lable Xaxis with the data

Read about interp1. USe interpolation and make the data even. Let F, T be your column data. m = length(F) ; Fi = linspace(mi...

How to plot non equally spaced data in an equally spaced fashion and lable Xaxis with the data

Read about interp1. USe interpolation and make the data even. Let F, T be your column data. m = length(F) ; Fi = linspace(mi...

alrededor de 20 horas ago | 0

Answered

Determining where y = 0

Try this: syms f(x) f(x) = x.*(cos(x.^2)) - exp(sqrt(x)) + x.^3 - 4*(x.^2); Df = diff(f,x); y = subs(Df,x,0:0.001:4) ; % th...

Determining where y = 0

Try this: syms f(x) f(x) = x.*(cos(x.^2)) - exp(sqrt(x)) + x.^3 - 4*(x.^2); Df = diff(f,x); y = subs(Df,x,0:0.001:4) ; % th...

alrededor de 22 horas ago | 0

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Answered

Plotting zero vectors in quiver3

%% set up mesh Xvc=(-5:2:5)'; Yvc=(-5:2:5)'; Zvc=(-5:2:5)'; [X,Y,Z]=meshgrid(Xvc, Yvc, Zvc); %% plot V Vx=-Y; % ...

Plotting zero vectors in quiver3

%% set up mesh Xvc=(-5:2:5)'; Yvc=(-5:2:5)'; Zvc=(-5:2:5)'; [X,Y,Z]=meshgrid(Xvc, Yvc, Zvc); %% plot V Vx=-Y; % ...

1 día ago | 1

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Answered

Left-most root Bisection method

You can refer the math here: https://www.mathwarehouse.com/calculus/continuity/continuity-bisection-method.php https://www.you...

Left-most root Bisection method

You can refer the math here: https://www.mathwarehouse.com/calculus/continuity/continuity-bisection-method.php https://www.you...

1 día ago | 0

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Answered

interpolate a matrix to fill NaN values.

Read about fillmissing. Or use interp1 as shown: clc; clear all ; T = [13.5047428571429 13.2392558823529 NaN 14.0492333333333...

interpolate a matrix to fill NaN values.

Read about fillmissing. Or use interp1 as shown: clc; clear all ; T = [13.5047428571429 13.2392558823529 NaN 14.0492333333333...

1 día ago | 0

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Answered

Separate row indices of a Matrix in two groups

pilot_loc= (1:N:256); % N is a variable. data_loc = setdiff(1:256,polot_loc) ;

Separate row indices of a Matrix in two groups

pilot_loc= (1:N:256); % N is a variable. data_loc = setdiff(1:256,polot_loc) ;

1 día ago | 1

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Answered

How to use result from first iteration from one equation and use it on other equation?

Check the below. Check the code, I have not checked it thoroughly. But you can follow the methid like shown. I have used anonymo...

How to use result from first iteration from one equation and use it on other equation?

Check the below. Check the code, I have not checked it thoroughly. But you can follow the methid like shown. I have used anonymo...

1 día ago | 0

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Answered

does plotting work on large no of values

Why it will not work? First try with less number of points. You ave taken a huge number of points. clc; clear all ; m = 100 ;...

does plotting work on large no of values

Why it will not work? First try with less number of points. You ave taken a huge number of points. clc; clear all ; m = 100 ;...

1 día ago | 0

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Answered

Index exceeds the number of array elements (0).

As you are expecting the angle to be in degrees, you have to use sind, cosd. If you enter the angles in radians, then use sin, c...

Index exceeds the number of array elements (0).

As you are expecting the angle to be in degrees, you have to use sind, cosd. If you enter the angles in radians, then use sin, c...

2 días ago | 1

Answered

Find the mean value of a signal

If you have an array a, use mean(a). a = rand(1,100) ; plot(a) ; a_avg = mean(a)

Find the mean value of a signal

If you have an array a, use mean(a). a = rand(1,100) ; plot(a) ; a_avg = mean(a)

2 días ago | 0

Answered

Adding matrix values into a string

a=[1 2 3 4 5 6 7 8 9] ; str = char(a+'0')

Adding matrix values into a string

a=[1 2 3 4 5 6 7 8 9] ; str = char(a+'0')

2 días ago | 0

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Answered

Figure but no plot

You have not defined f in your code...you need to define f and then call plot...something like this: diffmax=100 x=0:0.1:dif...

Figure but no plot

You have not defined f in your code...you need to define f and then call plot...something like this: diffmax=100 x=0:0.1:dif...

2 días ago | 0

Answered

correlation and visualisation of data

The corellation is a single number...to get it you can use xcorr. If you insist on plotting have a look on plotregression. If ...

correlation and visualisation of data

The corellation is a single number...to get it you can use xcorr. If you insist on plotting have a look on plotregression. If ...

2 días ago | 0

Answered

concatination rows of matrix for making a new matrix

% Data for demo A = [0 0 1 1 0 0 0 0 0 1 1 0 0 1 0 0 1 0 0 ...

concatination rows of matrix for making a new matrix

% Data for demo A = [0 0 1 1 0 0 0 0 0 1 1 0 0 1 0 0 1 0 0 ...

2 días ago | 1

Answered

plotting percentage of a max value

You may get multiple values for this case. [val,idx] = max(y) ; y1 = val*5/100 ; % Increase the reoslution of (x,y) data ...

plotting percentage of a max value

You may get multiple values for this case. [val,idx] = max(y) ; y1 = val*5/100 ; % Increase the reoslution of (x,y) data ...

2 días ago | 0

Answered

Brace indexing is not supported for variables of this type.

% List all CSV files fnames = dir('*.csv'); % Pre-allocate output vector ranges = zeros(numel(fnames), 1); % Loop over file ...

Brace indexing is not supported for variables of this type.

% List all CSV files fnames = dir('*.csv'); % Pre-allocate output vector ranges = zeros(numel(fnames), 1); % Loop over file ...

2 días ago | 1

Answered

Too Many Input Arguments

The function takes 15 inputs and you are giving 16 inputs. Please check. I feel the first input ua(j,i) is extra.

Too Many Input Arguments

The function takes 15 inputs and you are giving 16 inputs. Please check. I feel the first input ua(j,i) is extra.

2 días ago | 0

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Answered

How do I calculate distances between multiple points on a map using a loop.

If (x,y) are your column data. To get the distance between successive points use: dx = diff(x) ; dy = diff(y) ; d = sqrt(dx.^2...

How do I calculate distances between multiple points on a map using a loop.

If (x,y) are your column data. To get the distance between successive points use: dx = diff(x) ; dy = diff(y) ; d = sqrt(dx.^2...

3 días ago | 0

Answered

Finding different values of a matrix in a single loop

Read about ismember. A = [ 4 5 2 8 3 4 5 6 1 3 2 4 2 7] ; ...

Finding different values of a matrix in a single loop

Read about ismember. A = [ 4 5 2 8 3 4 5 6 1 3 2 4 2 7] ; ...

3 días ago | 0

Answered

Selecting either 1) a range of values from a plot or 2) selecting values from column / row value range or 3) both

To select x-values lying in the range 0.1 and 10. use: idx = x > 0.1 & x < 10 ; xi = x(idx) ; To get the respective y va...

Selecting either 1) a range of values from a plot or 2) selecting values from column / row value range or 3) both

To select x-values lying in the range 0.1 and 10. use: idx = x > 0.1 & x < 10 ; xi = x(idx) ; To get the respective y va...

3 días ago | 0