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john


Active since 2011

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graph algorithms
Hello, I want implement a graph algorithm. How could I create a graph and compute for example the matrix of the distance of t...

meer dan 12 jaar ago | 1 answer | 0

1

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Question


error in edge command
Hello, When I run the following code I get this message: ??? [BW,threshold]=edge(img,’zerocross’,[],'Laplacian'); ...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


edge function
Hello, I want to make edgw detection with Laplacian zero crossing techniqus and I am using the following command [BW,threshol...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


Polynomial curve fitting
Hi, I am trying to make polynomial curve fitting in sine wave. First I have created the wave and I took 10 samples, on which ...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


RMSE
Hi, Does anybody know if there is any command in matlab, to calculate the RMSE (Root Mean Square Error) in a curve fitting pr...

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question


sampling
Hello to everyone, I want to draw a period of y=sin(x) function and take 10 samples with the same interval among them. Next, ...

meer dan 13 jaar ago | 3 answers | 1

3

answers

Question


sine wave and sampling
Hello to everyone, I want to draw a period of y=sin(x) function and take 10 samples with the same interval among them. Next, ...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Answered
time interval between fft1 and fft2
Now I want to form my own routine DFT employing the following formula: F(k)=sumA(k),(from 0 to N-1) where A(k)=x(n)*exp(-j*2*pi...

meer dan 13 jaar ago | 0

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time interval between fft1 and fft2
Hello to everyone, In my program I have created two different functions to compute the 1-D and 2-D fft (Fast Fourier Transfor...

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question


median function
Hello, I use a mask of 3x3 and I want to get the median value of this mask. Is there any function to get this value except fr...

meer dan 13 jaar ago | 0 answers | 0

0

answers

Question


integer from the decimal
Hello to everyone, I want to take the integer part of a decimal number.For example, from the number 3.5 I want to get the 3.D...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


get maximum value of four arrays
Hello I am trying to compare the same elements of four arrays of the same size.For example,I have created arrays GM1,GM2,GM3,...

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question


using functions
Hello, I am a beginner in using matlab and I would like some help.I have a main program and two other functions used in this...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


standard deviation in matlab
Hello, I have calculate in my program the mean value and I am trying to calculate the standard deviaton value of an array 20x20...

meer dan 13 jaar ago | 1 answer | 0

1

answer

Question


plot while using for loops
Hello, I am a beginner in using matlab. I present my image as a 4x4 array and firstly I rescale my image with different interva...

meer dan 13 jaar ago | 1 answer | 0

1

answer