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Content Feed
Submitted
Draw or add axes to figure
Super helpful way to visualize axes in a 2D figure.
mer än 5 år ago | 2 downloads |
Submitted
Color-balance demo with GPU computing
Use GPU in MATLAB to perform white-balance operation to input image.
mer än 5 år ago | 2 downloads |
Submitted
Laplacian eigenmap ~ Diffusion map ~ manifold learning
Demo techniques of nonlinear eigenmaps for the purpose of recovering low-dimensional geometries.
mer än 5 år ago | 8 downloads |
Record timing of user input
I think you want |tic| and |toc|, as in the example below: % I will create a cell that represents some collection of images...
nästan 8 år ago | 2
| accepted
how do i vectorise given code?
I do not see how the example you provided will execute if |A| is any standard MATLAB data type. In particular, if |A| is a MA...
mer än 8 år ago | 0
Return specified rows of a vector
Try A = [4;8;2;3;8;6]; i = [1;3;5;6]; B = A(i)
mer än 8 år ago | 1
| accepted
Need half of my contour plot
Check out the |tril| and |triu| functions. For example if you have data similar to [x,y]= meshgrid(-1:.05:1); z = x.^2+...
mer än 8 år ago | 0
| accepted
Question
What would you do?
Suppose you have a string like rhs = 'x*cos(x)/(t+1)'; and that you want to create a function handle... would you do ...
mer än 8 år ago | 2 answers | 0
2
answersIs this even possible?
Have you tried right-clicking on the file from the current folder browser? In the context-menu that pops up you should see some...
mer än 8 år ago | 0
Simple Question about Optimization of Nested IF-FOR loops
First of all, it appears that each time through the outer-most loop (the first one), the variable |iPointsinSlice| does not chan...
mer än 8 år ago | 0
Subscript indices must either be real positive integers or logicals
There are several issues you need to resolve with your code before it will run. First, there is no increment operator in MATLAB...
mer än 8 år ago | 0
| accepted
Convert vector to cell array
The third input to the |fints| function is a cell array of strings that can be valid MATLAB identifiers. That is, the strings c...
mer än 8 år ago | 0
| accepted
How to visualize the matrix with colored entries
What are the features that make your data suspicious? For example, if the suspicious data is all very large (say 2 standard dev...
mer än 8 år ago | 0
How to do a 3D circle in matlab
I assume you do not have a parametric form for the circle in 3D, but you do have the equation for the plane where the circle liv...
mer än 8 år ago | 5
Simpl equestion about CUMSUM
I don't think I would use cumsum here. Instead, try A = sum(bsxfun(@gt,B',0:299)); Note, this command above assumes B i...
mer än 8 år ago | 0
| accepted
match the first letter in a cell and save
Try this (I assume your cell is called |variable|) idx = cellfun(@(s)strncmp(s,'P',1),variable) newCell = variable(idx);...
mer än 8 år ago | 0
| accepted
how to remove NaN
You're very close try % idx(i) is true if contents in row i, column 6 of M equals NaN idx = cellfun(@isnan,M(:,6)) ...
mer än 8 år ago | 1
PLOT COMMAND USING string arguments
Maybe try x = eval(get(text1,'string')); y = eval(get(text2,'string')); axes(plot1); plot(x,y);
mer än 8 år ago | 0
| accepted
calculate a vector from consecutive vectors without a loop
Totally.. try something like yourVector = 1:100; avgWindow = 1/10*ones(1,10); % each value is 1/10 movingAverage ...
mer än 8 år ago | 1
| accepted
Sliders in Matlab GUI
Check out this simple function.. you should be able to copy and paste it into a new file, save the file with the name |simplePro...
mer än 8 år ago | 0
| accepted
lines to curves drawing problem
I assume you have the variables |x| and |y| which are vectors representing the values in the x-component and in the y-component ...
mer än 8 år ago | 2
| accepted
Create an image stack (3-D matrix)
Execute this command after your code above to get the three gray-scale images you create into one 3D matrix of grayscale image...
mer än 8 år ago | 0
| accepted
create a function handle extracting pieces from a matrix function handle
Starting from your example A = @(x) [1 2 x; 2*x x.^2 3]; you probably realized that *this command is not allowed* B...
mer än 8 år ago | 1
| accepted
How can I calculate and compare the energy of the curvelet coefficients to compare in thresholding code?
When you decompose a function |f| in an orthonormal basis, you can relate the sum of the square of the coefficients to the L2-no...
mer än 8 år ago | 0
| accepted
Matrix is close to singular or badly scaled
There is a closed form expression for the inverse of a 2-by-2 matrix <http://mathworld.wolfram.com/MatrixInverse.html here> (see...
mer än 8 år ago | 1
| accepted
Loop variable names and file names
Check your |for|-loop. The iteration variable is |iName|, but you use |i| in the loop's body. Since you do not define |i|, MATL...
mer än 8 år ago | 0
| accepted
How do I add a 2D Plot along with a surface or mesh plot in MATLAB?
Does this get you started? % create figure figure % Generate data to make a surface x = -1:0.1:1; y = -1:0...
mer än 8 år ago | 1
| accepted
second order nonlinear ode with polynomial terms
You must write the ODE as a system of first-order ODEs. Use the substitution u1 = y and u2 = y'. Then, you'll end up with equa...
mer än 8 år ago | 0
Force polynomial fit through multiple points
I assume your data is given by two row vectors xData and yData, given for example by xData = linspace(-2,2); yData = 2.3...
mer än 8 år ago | 2
solving non linear third order algebaric expressions using newton rapson method or any other method!!!
The |fsolve| function needs a function handle as input. So create a file with the command edit yourFun.m and paste this...
mer än 8 år ago | 0
