Answered

RGB to gray pic

May be, is this to add all channels value to get the particular value #See Whats going on, same code, just be one line see the ...

RGB to gray pic

May be, is this to add all channels value to get the particular value #See Whats going on, same code, just be one line see the ...

25 days ago | 1

| accepted

Answered

Automated detection of diabetic retinopathy

https://www.mathworks.com/matlabcentral/answers/410844-does-svmtrain-still-work-on-matlab-r2014a-since-it-has-been-removed-in-r2...

Automated detection of diabetic retinopathy

https://www.mathworks.com/matlabcentral/answers/410844-does-svmtrain-still-work-on-matlab-r2014a-since-it-has-been-removed-in-r2...

1 month ago | 0

Answered

how extract specific values from matrix and build separate arrays?

One Way: Indexing %generates T in 3D T(:,:,1)= [0.4982 0 -0.8671 1.495 0.8671 0 0.4982 2.60...

how extract specific values from matrix and build separate arrays?

One Way: Indexing %generates T in 3D T(:,:,1)= [0.4982 0 -0.8671 1.495 0.8671 0 0.4982 2.60...

1 month ago | 0

Answered

How to convert an image to binary matrix

>> ima=magic(3) % Lets suppose ima is a Image ima = 8 1 6 3 5 7 4 9 2 >> result=dec2...

How to convert an image to binary matrix

>> ima=magic(3) % Lets suppose ima is a Image ima = 8 1 6 3 5 7 4 9 2 >> result=dec2...

1 month ago | 0

Answered

How to find intersection between two line

idx=find(x==y) And from the index, you get the value.

How to find intersection between two line

idx=find(x==y) And from the index, you get the value.

1 month ago | 0

Answered

help to identify the mistake

Its works for my sample image, I have choosed n more than>3, like 5,7....

help to identify the mistake

Its works for my sample image, I have choosed n more than>3, like 5,7....

1 month ago | 0

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Answered

How to write an complicated equation using matlab

c=2 % any value within 1 to 10 a=....;% Define a and b b=.....; O=angle(min(abs(median(a.^c)-b))) or c=4; %any value wi...

How to write an complicated equation using matlab

c=2 % any value within 1 to 10 a=....;% Define a and b b=.....; O=angle(min(abs(median(a.^c)-b))) or c=4; %any value wi...

1 month ago | 0

| accepted

Answered

Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-2.

Seems you have to consider two loops, as temp is now 1 dimentional vector Look this way, to assign both indexing (spatial posit...

Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-2.

Seems you have to consider two loops, as temp is now 1 dimentional vector Look this way, to assign both indexing (spatial posit...

1 month ago | 0

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Answered

Random times for an event to occur.

Is this? #Hint tic while toc<4.5 pause(rand) %Because of random pause, time slots varry % do here end More help: here ...

Random times for an event to occur.

Is this? #Hint tic while toc<4.5 pause(rand) %Because of random pause, time slots varry % do here end More help: here ...

1 month ago | 0

Answered

Error using reshape To RESHAPE the number of elements must not change.

Must be same, see Total Elements on wwf6=length(cleanAudio)*1 See the following example >> A=magic(4) A = 16 2 ...

Error using reshape To RESHAPE the number of elements must not change.

Must be same, see Total Elements on wwf6=length(cleanAudio)*1 See the following example >> A=magic(4) A = 16 2 ...

1 month ago | 0

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Answered

How can we make this code shorter?

One Suggestion use array or cell array, where it can be, for example- #Instead of this MSE1=zeros(N,IterNo); MSE2=zeros(N,It...

How can we make this code shorter?

One Suggestion use array or cell array, where it can be, for example- #Instead of this MSE1=zeros(N,IterNo); MSE2=zeros(N,It...

1 month ago | 0

Answered

Face image preprocesaing filtering

You did not attach the sample image. The question is quite broad, it is quit unfair to answer image processing noise related que...

Face image preprocesaing filtering

You did not attach the sample image. The question is quite broad, it is quit unfair to answer image processing noise related que...

1 month ago | 0

Answered

How to draw an image showing different-sized "threaded" black circles?

Please modify as per your requirements rectangle('Position',[2 2 4 4]); hold on; rad=linspace(0.3,0.1,8) for i=1:8 viscircl...

How to draw an image showing different-sized "threaded" black circles?

Please modify as per your requirements rectangle('Position',[2 2 4 4]); hold on; rad=linspace(0.3,0.1,8) for i=1:8 viscircl...

1 month ago | 1

| accepted

Answered

Variable horizontal alignment of cell array's strings in annotation

cases = 18; percent = 0.3; dim = [0.1 0.5 0.1 0.1]; arrcell = {['there are ',num2str(cases),' cases'],['- - - -'],['the perce...

Variable horizontal alignment of cell array's strings in annotation

cases = 18; percent = 0.3; dim = [0.1 0.5 0.1 0.1]; arrcell = {['there are ',num2str(cases),' cases'],['- - - -'],['the perce...

2 months ago | 0

Answered

Make image from csv files

Example : lat = importdata('mariana_latitude.csv') imshow(lat,[]);

Make image from csv files

Example : lat = importdata('mariana_latitude.csv') imshow(lat,[]);

2 months ago | 0

Answered

How can I calculate average of two values using a for loop

Why you are dealing with cell array, you cal do same with array, By the way ave = PTS./G is not the average PTS = {539 1220 996...

How can I calculate average of two values using a for loop

Why you are dealing with cell array, you cal do same with array, By the way ave = PTS./G is not the average PTS = {539 1220 996...

2 months ago | 0

| accepted

Answered

How to divide 2D histogram into four quadrants

You can manualy insert the line as required data=randi(100,[10,10]); hist(data); grid on; hold on; x_data=1:100; y_data=r...

How to divide 2D histogram into four quadrants

You can manualy insert the line as required data=randi(100,[10,10]); hist(data); grid on; hold on; x_data=1:100; y_data=r...

2 months ago | 1

Answered

Is there a logical NAND operation in MATLAB like the logical AND operation '&'?

nand_result=~(A & B)

Is there a logical NAND operation in MATLAB like the logical AND operation '&'?

nand_result=~(A & B)

2 months ago | 0

| accepted

Answered

Help!! I'm trying to plot a function where the output changes with different values of the array. my for loop works, I can see the values changing. I just have trouble with plotting it. I get a graph with nothing in it! any help is appreciated!

gamma=0.268; dt=0.05; T=10; t=0:dt:T for tt=1:length(t) x=gamma*sqrt(((1-cos(0.7255*t(tt))).^2+(sin(0.7255*t(tt))).^2)/((...

Help!! I'm trying to plot a function where the output changes with different values of the array. my for loop works, I can see the values changing. I just have trouble with plotting it. I get a graph with nothing in it! any help is appreciated!

gamma=0.268; dt=0.05; T=10; t=0:dt:T for tt=1:length(t) x=gamma*sqrt(((1-cos(0.7255*t(tt))).^2+(sin(0.7255*t(tt))).^2)/((...

2 months ago | 1

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Answered

How to generate triangular heatmap using matlab?

data=tril(randi(100,[15,15])); imagesc(data); colormap summer colorbar Plese DO modification and addition(labels) as per req...

How to generate triangular heatmap using matlab?

data=tril(randi(100,[15,15])); imagesc(data); colormap summer colorbar Plese DO modification and addition(labels) as per req...

2 months ago | 1

Answered

find a value and their related values in other columns

Let's example mat=[-3 0.01 0 0.04 +3 0.06 6 0.08 9 0.09]; data_cl=mat(find(ma...

find a value and their related values in other columns

Let's example mat=[-3 0.01 0 0.04 +3 0.06 6 0.08 9 0.09]; data_cl=mat(find(ma...

2 months ago | 0

| accepted

Answered

how to create a phase plane in matlab

Quiver plot https://www.mathworks.com/help/matlab/ref/quiver.html http://www.thphys.nuim.ie/CompPhysics/matlab/help/techdoc/r...

how to create a phase plane in matlab

Quiver plot https://www.mathworks.com/help/matlab/ref/quiver.html http://www.thphys.nuim.ie/CompPhysics/matlab/help/techdoc/r...

2 months ago | 0

Answered

How to solve error " Undefined function or variable "

Save the function (Gauss_loglik.m) in the same directory (No clc or clear in function file)

How to solve error " Undefined function or variable "

Save the function (Gauss_loglik.m) in the same directory (No clc or clear in function file)

2 months ago | 1

Answered

Segmentation and vertical length measurements

#NonTested, but providing the steps for the same- Convert the image to binary Apply Hit and Miss Transfrom to trace the outer...

Segmentation and vertical length measurements

#NonTested, but providing the steps for the same- Convert the image to binary Apply Hit and Miss Transfrom to trace the outer...

2 months ago | 0

Answered

Change column name based on another vector

See the table and set accordingly https://www.mathworks.com/help/matlab/ref/table.html

Change column name based on another vector

See the table and set accordingly https://www.mathworks.com/help/matlab/ref/table.html

2 months ago | 0

Answered

How to convert string "26/7" into a double variable?

X = str2double(str) converts the text in str to double precision values. Text is "22/7" This is not a number right "/" . What d...

How to convert string "26/7" into a double variable?

X = str2double(str) converts the text in str to double precision values. Text is "22/7" This is not a number right "/" . What d...

2 months ago | 0

Answered

Is it possible Matlab shows the grid on the surface of the plot?

Change the faceAlpha (within 0 and 1) value, see, it may heps you (This is transperancy) surf(x,t,abs(r1),'FaceAlpha',0.5); Or...

Is it possible Matlab shows the grid on the surface of the plot?

Change the faceAlpha (within 0 and 1) value, see, it may heps you (This is transperancy) surf(x,t,abs(r1),'FaceAlpha',0.5); Or...

2 months ago | 0

Answered

How to use a loop to increase polynomial order and store results

One way hints: Start with T(1) to T(10), Matlab doesnot allow zero indexing T(1)=t^1 for i=2:9 T(i)=[T(i-1),t^i]; end

How to use a loop to increase polynomial order and store results

One way hints: Start with T(1) to T(10), Matlab doesnot allow zero indexing T(1)=t^1 for i=2:9 T(i)=[T(i-1),t^i]; end

2 months ago | 0

Answered

How can i change the positions of numbers in a matrix

sort the matrix, you will get all rows at initails of rows numbers sort(matrix)

How can i change the positions of numbers in a matrix

sort the matrix, you will get all rows at initails of rows numbers sort(matrix)

2 months ago | 0