Question
Statistics : Data binning vs increased size
Dear Users, Suppose you have data that is recorded daily( lets say a temperature in different places over 4 years), each time...
12 years ago | 0 answers | 1
0
answersAnswered
How can I calculate a dirac function of 2D discrete signal
hi @Wayne King gave you the kernel of the problem, here is another way out: H=0*meshgrid(linspace(-0.5,0.5,20)); H(floo...
How can I calculate a dirac function of 2D discrete signal
hi @Wayne King gave you the kernel of the problem, here is another way out: H=0*meshgrid(linspace(-0.5,0.5,20)); H(floo...
12 years ago | 0
Answered
Plot a family of circles in 3D
Sniriza, I agree with Harsheel, or you can simply add a minus to z : z = -(100 * r * ones(1, length(t)));
Plot a family of circles in 3D
Sniriza, I agree with Harsheel, or you can simply add a minus to z : z = -(100 * r * ones(1, length(t)));
12 years ago | 0
Answered
Convert to monochromatic & Recognize centroid and radii
Micheal, The only contribution i can offer is like this : i think the centroid function is in the Image processing ToolBox, b...
Convert to monochromatic & Recognize centroid and radii
Micheal, The only contribution i can offer is like this : i think the centroid function is in the Image processing ToolBox, b...
12 years ago | 0
Answered
Plotting E - e*sin[E] = M as E vs M, when given e as 5 different values [0 0.25 0.5 0.75 1]?
Daniel, i find this issue not clear at all, besides you have to to give some Physical explanations about the constants, M as *me...
Plotting E - e*sin[E] = M as E vs M, when given e as 5 different values [0 0.25 0.5 0.75 1]?
Daniel, i find this issue not clear at all, besides you have to to give some Physical explanations about the constants, M as *me...
12 years ago | 0
Answered
Overlay an image in preview video
TRY : figure, imshow( Your foreground), hold on, preview(vid) ;
Overlay an image in preview video
TRY : figure, imshow( Your foreground), hold on, preview(vid) ;
12 years ago | 0
Answered
Why am I getting this error and how can I fix it?
F is 2x1 vector so as the input x, the starting points are set in x0, and F(-5) has no sense because the index of vector start...
Why am I getting this error and how can I fix it?
F is 2x1 vector so as the input x, the starting points are set in x0, and F(-5) has no sense because the index of vector start...
12 years ago | 1
| accepted
Answered
How to solve 2-D steady state heat conduction problem in MATLAB ?
2D PDE can be solved using function : *pdepe* or by using old routines, Take a look at my submission for beginning : <http:...
How to solve 2-D steady state heat conduction problem in MATLAB ?
2D PDE can be solved using function : *pdepe* or by using old routines, Take a look at my submission for beginning : <http:...
12 years ago | 0
Answered
How can I use pdepe to solve a PDE with an integral boundary condition?
hi, take a look at the file,
How can I use pdepe to solve a PDE with an integral boundary condition?
hi, take a look at the file,
12 years ago | 0
Answered
Latex Support to publish in html format
Alessio The right and left parenthesis are maybe not recognized , try directly this command : >>text(0.5,0.5,'\int_{E}f ...
Latex Support to publish in html format
Alessio The right and left parenthesis are maybe not recognized , try directly this command : >>text(0.5,0.5,'\int_{E}f ...
12 years ago | 0
Answered
plot response for a step change in input
Jason, You did not give details about the nature of the system, ( low pass, high pass,...). The Fourier transform of the squar...
plot response for a step change in input
Jason, You did not give details about the nature of the system, ( low pass, high pass,...). The Fourier transform of the squar...
12 years ago | 0
Answered
How can I use pdepe to solve a PDE with an integral boundary condition?
why not solve, first, for u(0,t) for known x0 and xf, using *integral* or *quad* or *trapz* next follow the routine ?
How can I use pdepe to solve a PDE with an integral boundary condition?
why not solve, first, for u(0,t) for known x0 and xf, using *integral* or *quad* or *trapz* next follow the routine ?
12 years ago | 0
Answered
how to do something like A(:,B(:)) ?
you can create your vectors as the following : C1=A(:,B(1)); C2=A(:,B(2)); C4=A(:,B(4));
how to do something like A(:,B(:)) ?
you can create your vectors as the following : C1=A(:,B(1)); C2=A(:,B(2)); C4=A(:,B(4));
12 years ago | 0
Answered
add data points to a graph
you have to know the xy coordinates of those points to mark them . suppose i have a graph Y(X) : X=1:10;Y=randn(1,10); p...
add data points to a graph
you have to know the xy coordinates of those points to mark them . suppose i have a graph Y(X) : X=1:10;Y=randn(1,10); p...
12 years ago | 1
Answered
How can I get "P" for each Gas
R = 0.08206; T = 300; V = 20*ones(5,1); Table = {'GasName','GasSymb','a','b';... [ 'Helium', 'Hydrogen', 'Oxygen', 'Ch...
How can I get "P" for each Gas
R = 0.08206; T = 300; V = 20*ones(5,1); Table = {'GasName','GasSymb','a','b';... [ 'Helium', 'Hydrogen', 'Oxygen', 'Ch...
12 years ago | 0
Answered
Summation for series (symsum function), only want odd numbers
That is Square function ,the task needs skills, you can try loop , it is possible to work : syms x n SUM=0; a=1:2:9; F=0...
Summation for series (symsum function), only want odd numbers
That is Square function ,the task needs skills, you can try loop , it is possible to work : syms x n SUM=0; a=1:2:9; F=0...
12 years ago | 0
| accepted
Answered
How do I find the even and odd elements in a vector?
hi Paul, thats good as you created random 50,100, that first step is important, odd and even are related to Modulus, even...
How do I find the even and odd elements in a vector?
hi Paul, thats good as you created random 50,100, that first step is important, odd and even are related to Modulus, even...
12 years ago | 1
| accepted
Answered
Corrcoef creating NaNs from datasets with no NaNs
hi, because your data contain similar values, here is an example : corrcoef([ones(4,1) ones(4,1)])
Corrcoef creating NaNs from datasets with no NaNs
hi, because your data contain similar values, here is an example : corrcoef([ones(4,1) ones(4,1)])
12 years ago | 0
Answered
Wind and temperature divided into speed and temp
Jenny, try this version , wind=round(20*rand(20,1)); % arbitrary wind time series . temp=round(10*randn(30,1)); %arbitrar...
Wind and temperature divided into speed and temp
Jenny, try this version , wind=round(20*rand(20,1)); % arbitrary wind time series . temp=round(10*randn(30,1)); %arbitrar...
12 years ago | 0
Answered
ANY MATLAB CODE FOR GAUSSIAN BEAM PROPAGATION IN A OPTICAL FIBER
you can try this submission : <http://www.mathworks.com/matlabcentral/fileexchange/14887-finite-difference-beam-propagation-met...
ANY MATLAB CODE FOR GAUSSIAN BEAM PROPAGATION IN A OPTICAL FIBER
you can try this submission : <http://www.mathworks.com/matlabcentral/fileexchange/14887-finite-difference-beam-propagation-met...
12 years ago | 0
Submitted
Ferrofluid : pseudo simulation
Pseudo simulation of liquid magnet , first version .
12 years ago | 2 downloads |
Answered
change picture into grayscale and keep the luminace...same
Xu, the only contribution i can made here is that , as you have N samples, you have to *normalize* them, i mean after convert...
change picture into grayscale and keep the luminace...same
Xu, the only contribution i can made here is that , as you have N samples, you have to *normalize* them, i mean after convert...
12 years ago | 0
Answered
How to calculate distance between 2 complex points?
Jean luc, you can perform the task without using the pdist function, here is version : S1=[1.00 - 1.00i, -1.00 - 1.00i, -1.0...
How to calculate distance between 2 complex points?
Jean luc, you can perform the task without using the pdist function, here is version : S1=[1.00 - 1.00i, -1.00 - 1.00i, -1.0...
12 years ago | 0
Answered
How to perform an inverse laplace transform?
Mike,laplace function is working on symbolic variables, try to use *ifft* instead , as long as there is no alternative . >>Y...
How to perform an inverse laplace transform?
Mike,laplace function is working on symbolic variables, try to use *ifft* instead , as long as there is no alternative . >>Y...
12 years ago | 0
Answered
How to compute and plot a Spectrogram?
try to use help, like abdelmalek answered, or use the function directly : >>spectrogram(randn(200,1)); % white noise
How to compute and plot a Spectrogram?
try to use help, like abdelmalek answered, or use the function directly : >>spectrogram(randn(200,1)); % white noise
12 years ago | 0
Answered
Find max, min and create array C
you can start by creating a temporary variable *B=A(:,end)*, next you can use *max(B)* and *min(B)* or you can use the function ...
Find max, min and create array C
you can start by creating a temporary variable *B=A(:,end)*, next you can use *max(B)* and *min(B)* or you can use the function ...
12 years ago | 0
Answered
normal distribution from data
Here is another suggestion: y=pdf('Normal',x,m,s); plot(x,y);
normal distribution from data
Here is another suggestion: y=pdf('Normal',x,m,s); plot(x,y);
12 years ago | 0
| accepted
Answered
first time using matlab, how can i use solve to find the equilibrium solutions of the differential equation, y` = -( 3 - y ) y
Like @the cylist said, try ode23 or ode45, but you did not mention the initial condition : function dy=Myfunction(t,y) dy(...
first time using matlab, how can i use solve to find the equilibrium solutions of the differential equation, y` = -( 3 - y ) y
Like @the cylist said, try ode23 or ode45, but you did not mention the initial condition : function dy=Myfunction(t,y) dy(...
12 years ago | 0
Answered
question on generating random numbers
John Using random permutation can be helpful, start from this prototype : S=cell(10,1); for n=1:10 S{n}=randperm(10);...
question on generating random numbers
John Using random permutation can be helpful, start from this prototype : S=cell(10,1); for n=1:10 S{n}=randperm(10);...
12 years ago | 0
Answered
Can the same words at different time from a single person be the same or approximatly the same, using sound processing on mathlab?
adenew, There is discipline in signal processing and audio engineering specialized with this type of application, many method...
Can the same words at different time from a single person be the same or approximatly the same, using sound processing on mathlab?
adenew, There is discipline in signal processing and audio engineering specialized with this type of application, many method...
12 years ago | 0
| accepted