Kye Taylor
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Feeds
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...
oltre 11 anni fa | 2
| accettato
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...
quasi 12 anni fa | 0
Return specified rows of a vector
Try A = [4;8;2;3;8;6]; i = [1;3;5;6]; B = A(i)
quasi 12 anni fa | 1
| accettato
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+...
quasi 12 anni fa | 0
| accettato
Domanda
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 ...
quasi 12 anni fa | 2 risposte | 0
2
risposteIs 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...
circa 12 anni fa | 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...
circa 12 anni fa | 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...
circa 12 anni fa | 0
| accettato
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...
circa 12 anni fa | 0
| accettato
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...
circa 12 anni fa | 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...
circa 12 anni fa | 7
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...
circa 12 anni fa | 0
| accettato
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);...
circa 12 anni fa | 0
| accettato
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)) ...
circa 12 anni fa | 1
PLOT COMMAND USING string arguments
Maybe try x = eval(get(text1,'string')); y = eval(get(text2,'string')); axes(plot1); plot(x,y);
circa 12 anni fa | 0
| accettato
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 ...
circa 12 anni fa | 1
| accettato
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...
circa 12 anni fa | 0
| accettato
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 ...
circa 12 anni fa | 2
| accettato
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...
circa 12 anni fa | 0
| accettato
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...
circa 12 anni fa | 1
| accettato
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...
circa 12 anni fa | 0
| accettato
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...
circa 12 anni fa | 1
| accettato
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...
circa 12 anni fa | 0
| accettato
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...
circa 12 anni fa | 1
| accettato
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...
circa 12 anni fa | 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...
circa 12 anni fa | 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...
circa 12 anni fa | 0
can fzero be used to find the minimum ?
Do you have the optimization toolbox? To start you can begin with the fminbnd function. For example, say your function is g(...
circa 12 anni fa | 0
| accettato
How to sum part of a column?
If your matrix is called A, then rows 1 and 2 in column 3 can be identified with the syntax A( 1:2, 3 ) So sum it using ...
circa 12 anni fa | 0
| accettato
Save Variable in Command Window
You want to use the function |path| so don't create a new variable called |path|! Instead try this prompt = 'Enter the pat...
circa 12 anni fa | 2
