Kye Taylor

Active since 2011

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Professional Interests: Mathematics and statistics

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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...

11 years ago | 2

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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...

11 years ago | 0

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Return specified rows of a vector
Try A = [4;8;2;3;8;6]; i = [1;3;5;6]; B = A(i)

11 years ago | 1

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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+...

11 years ago | 0

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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 ...

11 years ago | 2 answers | 0

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Is 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...

11 years ago | 0

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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...

11 years ago | 0

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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...

11 years ago | 0

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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...

11 years ago | 0

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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...

11 years ago | 0

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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...

11 years ago | 7

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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...

11 years ago | 0

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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);...

11 years ago | 0

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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)) ...

11 years ago | 1

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PLOT COMMAND USING string arguments
Maybe try x = eval(get(text1,'string')); y = eval(get(text2,'string')); axes(plot1); plot(x,y);

11 years ago | 0

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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 ...

11 years ago | 1

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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...

11 years ago | 0

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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 ...

11 years ago | 2

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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...

11 years ago | 0

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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...

11 years ago | 1

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Answered
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...

11 years ago | 0

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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...

11 years ago | 1

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11 years ago | 0

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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...

11 years ago | 1

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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...

11 years ago | 0

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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...

11 years ago | 2

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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...

11 years ago | 0

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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(...

11 years ago | 0

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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 ...

11 years ago | 0

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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...

11 years ago | 2

Kye Taylor

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