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Kye Taylor


Aktiv seit 2011

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Professional Interests: Mathematics and statistics

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Beantwortet
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...

mehr als 10 Jahre vor | 2

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Beantwortet
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...

mehr als 10 Jahre vor | 0

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

fast 11 Jahre vor | 1

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Beantwortet
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+...

fast 11 Jahre vor | 0

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Frage


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 ...

fast 11 Jahre vor | 2 Antworten | 0

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Antworten

Beantwortet
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...

fast 11 Jahre vor | 0

Beantwortet
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...

fast 11 Jahre vor | 0

Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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...

fast 11 Jahre vor | 0

Beantwortet
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...

fast 11 Jahre vor | 7

Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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);...

fast 11 Jahre vor | 0

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Beantwortet
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)) ...

fast 11 Jahre vor | 1

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

fast 11 Jahre vor | 0

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Beantwortet
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 ...

fast 11 Jahre vor | 1

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Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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 ...

fast 11 Jahre vor | 2

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Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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...

fast 11 Jahre vor | 1

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Beantwortet
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...

fast 11 Jahre vor | 0

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Beantwortet
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...

fast 11 Jahre vor | 1

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Beantwortet
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...

etwa 11 Jahre vor | 0

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Beantwortet
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...

etwa 11 Jahre vor | 1

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Beantwortet
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...

etwa 11 Jahre vor | 0

Beantwortet
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...

etwa 11 Jahre vor | 2

Beantwortet
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...

etwa 11 Jahre vor | 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(...

etwa 11 Jahre vor | 0

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Beantwortet
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 ...

etwa 11 Jahre vor | 0

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Beantwortet
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...

etwa 11 Jahre vor | 2

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