Answered

finding an array of roots?

Is this? R=.5; %m L=1.25; %m H=.25; %m N=100 phi=0; theta=linspace(0, 4*pi, N); for i=1:N fphi=@(phi) R*sin(theta(i)) + ...

finding an array of roots?

Is this? R=.5; %m L=1.25; %m H=.25; %m N=100 phi=0; theta=linspace(0, 4*pi, N); for i=1:N fphi=@(phi) R*sin(theta(i)) + ...

14 days ago | 0

Answered

decreasing point on curve

One way: Find the y, when y(i)<y(i-1) (First Case) iterate i from 2 to end Second way: data=y(i+1)-y(i); %Create the data, t...

decreasing point on curve

One way: Find the y, when y(i)<y(i-1) (First Case) iterate i from 2 to end Second way: data=y(i+1)-y(i); %Create the data, t...

16 days ago | 0

Answered

Why the I is always a constant

Befor answering the question, It seems you are messing with code and logic, if yes, figure out. Now the answer of the question ...

Why the I is always a constant

Befor answering the question, It seems you are messing with code and logic, if yes, figure out. Now the answer of the question ...

16 days ago | 0

Answered

Index in position 2 is invalid. Array indices must be positive integers or logical values.

for ky=-6:0.1:6 for kx=-6:0.1:6 f(10*ky+61,10*kx+61)=exp(i*10^(-16)*(2.16*(n+m)*kx+1.245*(n-m)*ky)) I(10*ky+61,...

Index in position 2 is invalid. Array indices must be positive integers or logical values.

for ky=-6:0.1:6 for kx=-6:0.1:6 f(10*ky+61,10*kx+61)=exp(i*10^(-16)*(2.16*(n+m)*kx+1.245*(n-m)*ky)) I(10*ky+61,...

16 days ago | 0

Answered

Function that converts Celsius to Fahrenheit and prints it to a file

Error in CelToFar (line 7) Far=((9*Cel/5)+32); Here it is- I assumed you pass the single aruments (scalar) at a time, if large...

Function that converts Celsius to Fahrenheit and prints it to a file

Error in CelToFar (line 7) Far=((9*Cel/5)+32); Here it is- I assumed you pass the single aruments (scalar) at a time, if large...

16 days ago | 0

| accepted

Answered

Counting values between values in array

A=123; B=129; result=sum(find(var==A | var==B))

Counting values between values in array

A=123; B=129; result=sum(find(var==A | var==B))

16 days ago | 0

Answered

Matrix dimensions error for adding noise vectors

The issue is here, you are trying to add different sizes matrices in the following line- new_sound_array=y+x1+x1; Where >> w...

Matrix dimensions error for adding noise vectors

The issue is here, you are trying to add different sizes matrices in the following line- new_sound_array=y+x1+x1; Where >> w...

17 days ago | 0

| accepted

Answered

how to do convolution Of this x1 and x10 function ?

result=conv(x1,x10); plot(result); Please do all other axes labeling and title

how to do convolution Of this x1 and x10 function ?

result=conv(x1,x10); plot(result); Please do all other axes labeling and title

17 days ago | 0

| accepted

Answered

Add columns into one column with each run

"Add columns into one column with each run" F=rand(10,1); [r c]=size(F); num_of_colm=10; % mention how many column you want t...

Add columns into one column with each run

"Add columns into one column with each run" F=rand(10,1); [r c]=size(F); num_of_colm=10; % mention how many column you want t...

17 days ago | 0

Answered

Vector dimensions not right

As already @Walter sir specified, you did not provide us the "t" data, here I have assumed the t data as same as t2 Please assi...

Vector dimensions not right

As already @Walter sir specified, you did not provide us the "t" data, here I have assumed the t data as same as t2 Please assi...

17 days ago | 0

| accepted

Answered

How to express this function?

function y=test1() T=3; W=pi; t=0.01:10 y=10*exp((-t./T).*sin(W.*t)) end Or Direct T=3; W=pi; t=0.01:10; y=10*exp...

How to express this function?

function y=test1() T=3; W=pi; t=0.01:10 y=10*exp((-t./T).*sin(W.*t)) end Or Direct T=3; W=pi; t=0.01:10; y=10*exp...

17 days ago | 0

| accepted

Answered

can someone tell what is happening in here are we assigning values to an array or what?

Is there any issue? I think no? nx=nx+1; % nx updated with 1 and replace the present nx value Following is the assigning out...

can someone tell what is happening in here are we assigning values to an array or what?

Is there any issue? I think no? nx=nx+1; % nx updated with 1 and replace the present nx value Following is the assigning out...

17 days ago | 0

Answered

plotting a moving object

Is this? x0=0;y0=0; x1=15;y1=8; v=1; px=0; py=0; t=0.1; dist=0; for i=1:1:x1 dist(i)=sqrt((x0-(t.*v)).^2 +(y0-(t.*v...

plotting a moving object

Is this? x0=0;y0=0; x1=15;y1=8; v=1; px=0; py=0; t=0.1; dist=0; for i=1:1:x1 dist(i)=sqrt((x0-(t.*v)).^2 +(y0-(t.*v...

18 days ago | 0

Answered

I need to generate an array where the elements in the array are the sum of the indices... I am quite lost with the nested for loop aspect... please assist if possible.

% If m = 12, and n = 13 then the final solution should be a 12 x 13 matrix with the min value being 2 and max value being 25 fu...

I need to generate an array where the elements in the array are the sum of the indices... I am quite lost with the nested for loop aspect... please assist if possible.

% If m = 12, and n = 13 then the final solution should be a 12 x 13 matrix with the min value being 2 and max value being 25 fu...

18 days ago | 1

| accepted

Answered

The if loop is continuing even after the condition is false.

It's seems perfectly working: >> RS RS = Columns 1 through 12 0.2217 0.2226 0.2235 0.2244 0.2252 0.2254...

The if loop is continuing even after the condition is false.

It's seems perfectly working: >> RS RS = Columns 1 through 12 0.2217 0.2226 0.2235 0.2244 0.2252 0.2254...

18 days ago | 1

Answered

how to extract SIFT features from rgb image in matlab

Have you checked here ? Also you can look on this custom function also.

how to extract SIFT features from rgb image in matlab

Have you checked here ? Also you can look on this custom function also.

18 days ago | 0

Answered

Change column in array

Arr=[5 5 5 5 ; 5 5 5 5; 5 5 5 5 ; 5 5 5 5; 5 5 5 5]; % First column number change the 10 Arr(:,1)=10 %Do the same for others ...

Change column in array

Arr=[5 5 5 5 ; 5 5 5 5; 5 5 5 5 ; 5 5 5 5; 5 5 5 5]; % First column number change the 10 Arr(:,1)=10 %Do the same for others ...

18 days ago | 0

Answered

I'm having trouble getting my first Matlab code to work? Can anyone tell me what's wrong?

Save the function as quadroot.m in different Matlab file. Call the function by passing inputs arguments from another main Matla...

I'm having trouble getting my first Matlab code to work? Can anyone tell me what's wrong?

Save the function as quadroot.m in different Matlab file. Call the function by passing inputs arguments from another main Matla...

18 days ago | 0

Answered

How to change the color of a plot with two y-axes on the same graph in Matlab

x = 0:0.01:20; y1 = sin(x); y2 = x; figure % new figure plotyy(x,y1,x,y2) [hAx,hLine1,hLine2] = plotyy(x,y1,x,y2); set(hAx...

How to change the color of a plot with two y-axes on the same graph in Matlab

x = 0:0.01:20; y1 = sin(x); y2 = x; figure % new figure plotyy(x,y1,x,y2) [hAx,hLine1,hLine2] = plotyy(x,y1,x,y2); set(hAx...

19 days ago | 1

| accepted

Answered

How to plot and subplot butterfly?

%Problem 1 n = 5000 ; t = linspace(0,20*pi,n); x = sin(t).*(exp(cos(t))-2*cos(4*t)+sin(t/12).^5) y = cos(t).*(exp(cos(t))-2*...

How to plot and subplot butterfly?

%Problem 1 n = 5000 ; t = linspace(0,20*pi,n); x = sin(t).*(exp(cos(t))-2*cos(4*t)+sin(t/12).^5) y = cos(t).*(exp(cos(t))-2*...

20 days ago | 0

Answered

Generate an intensity image I(x,y) and display it. by using the equation I = 0.299R 0.587G 0.114B (the NTSC standard for luminance)

Is this? R=randi(50,[500 500]); G=randi(50,[500 500]); B=randi(50,[500 500]); R_comp=0.299*R; G_comp=0.587*G; B_comp=0.114...

Generate an intensity image I(x,y) and display it. by using the equation I = 0.299R 0.587G 0.114B (the NTSC standard for luminance)

Is this? R=randi(50,[500 500]); G=randi(50,[500 500]); B=randi(50,[500 500]); R_comp=0.299*R; G_comp=0.587*G; B_comp=0.114...

20 days ago | 0

Answered

How to plot different probability distribution for an image . Kindly help me.

gray_image=rgb2gray(imread('image_test.jpg')); [r c]=size(gray_image); pix_prob_normal=imhist(gray_image)./(r*c); plot(0:255...

How to plot different probability distribution for an image . Kindly help me.

gray_image=rgb2gray(imread('image_test.jpg')); [r c]=size(gray_image); pix_prob_normal=imhist(gray_image)./(r*c); plot(0:255...

20 days ago | 0

| accepted

Answered

Overlay binary image on RGB image

Is this? RGB_image=imread('image_test.jpg'); subplot(311);imshow(RGB_image); bw_image=im2bw(rgb2gray(RGB_image)); subplot(31...

Overlay binary image on RGB image

Is this? RGB_image=imread('image_test.jpg'); subplot(311);imshow(RGB_image); bw_image=im2bw(rgb2gray(RGB_image)); subplot(31...

20 days ago | 0

| accepted

Answered

Creating a loop in order to read .txt files

list=dir('*.txt'); for j=1:length(list) file_text=textread(list(j).name); %.....code end

Creating a loop in order to read .txt files

list=dir('*.txt'); for j=1:length(list) file_text=textread(list(j).name); %.....code end

20 days ago | 0

| accepted

Answered

need to create a vector through input in the script

function result=test( ) n=input('Enter the vector length: '); result=zeros(1,n); for i=1:n result(i)=input('Enter the vector...

need to create a vector through input in the script

function result=test( ) n=input('Enter the vector length: '); result=zeros(1,n); for i=1:n result(i)=input('Enter the vector...

20 days ago | 1

| accepted

Answered

Random 1 image from folder and imread it

Try? %Save the folder of images in the current directory path_directory='Test3'; % 'Folder name' original_files=dir([path_dir...

Random 1 image from folder and imread it

Try? %Save the folder of images in the current directory path_directory='Test3'; % 'Folder name' original_files=dir([path_dir...

20 days ago | 0

Answered

How to write a for loop that converts one file type to another?

See my answer here ralated to images call..do the same in your case Or More simpler @Stephan's Answer here Try, any issue ...

How to write a for loop that converts one file type to another?

See my answer here ralated to images call..do the same in your case Or More simpler @Stephan's Answer here Try, any issue ...

21 days ago | 0

Answered

Kernel RBF in image segmentation

Actually what the means by a and b. This custom function is based on following paper, kindly check all details http://citesee...

Kernel RBF in image segmentation

Actually what the means by a and b. This custom function is based on following paper, kindly check all details http://citesee...

21 days ago | 0

Answered

could anyone help me how to verify the standard deviation of matrix

Matlab: (Uses divide by N-1) >> A=[1 4 2]; >> std(A) ans = 1.5275

could anyone help me how to verify the standard deviation of matrix

Matlab: (Uses divide by N-1) >> A=[1 4 2]; >> std(A) ans = 1.5275

21 days ago | 0

Answered

Remove rows of a table based on values in an array

disp('Original table'); var1=[1;1;1;1;4;1]; var2=[2;2;2;2;5;2]; var3=[0;3;3;8;8;9]; table_data=table(var1,var2,var3) n=hist...

Remove rows of a table based on values in an array

disp('Original table'); var1=[1;1;1;1;4;1]; var2=[2;2;2;2;5;2]; var3=[0;3;3;8;8;9]; table_data=table(var1,var2,var3) n=hist...

21 days ago | 1

| accepted