Chris McComb

Last seen: presque 4 ans il y a | Actif depuis 2013

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Reduced Rank Regression
Multivariate regression via rank reduction.

plus de 6 ans il y a | 2 téléchargements |

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PipeWrench
Solve fluid networks with finite element method

presque 9 ans il y a | 1 téléchargement |

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gplot3: plotting simple graphs in 3d
Plot simple graphs in 3d

plus de 9 ans il y a | 1 téléchargement |

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Aesethetic Axis Breaks
Breaks the x or y axis.

plus de 9 ans il y a | 3 téléchargements |

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Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...

plus de 9 ans il y a

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

plus de 9 ans il y a

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Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

plus de 9 ans il y a

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Is there a mathwork about tensegrity structure?
You might want to start <http://www.markschenk.com/tensegrity/files.html here> .

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Replace Vector Elements
Replace all elements in a vector which are equal to or smaller than zero with 0.1. Example: A = [1 2 3 -1 0 2 -3 -80]; ...

plus de 9 ans il y a

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Back to basics 7 - Equal NaNs
Covering some basic topics I haven't seen elsewhere on Cody. Given 2 input variables, output true if they are equal, false ot...

plus de 9 ans il y a

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Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

plus de 9 ans il y a

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loop for extracting columns of a matrix
If you have a matrix, M, you can access column i (as a vector) by using M(:, i). (The colon indicates 'every row')

plus de 9 ans il y a | 0

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Remove intercept with "regress"
I think that all you need to do is remove the first column from your second argument (i.e. the column of 1's). [b17, bint1...

plus de 9 ans il y a | 0

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Replacing elements in matrix columns
You can do the replacement using logical indexing. The replacement for 34 --> 1 would be as follows: for i=2:3 idx = (...

plus de 9 ans il y a | 0

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can i change the x axis without changing the plot? So i have a array with 10000 numbers in it, i want to plot thoes 10000 numbers in time, like 0-10sec insted of 0-10000.
You just need to supply a vector of x values. Something like x = linspace(0, 10, length(buf)); Then, just plot as ...

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Can anyone explain from the third line till the end of below code..??
The third line from the end contains only the word 'else'. This is typical syntax for the if control structure. In the example, ...

plus de 9 ans il y a | 0

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Creating Multiple Windowed Plots
You can use the command figure() to open a new window to plot in.

plus de 9 ans il y a | 0

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save txt file in loop
You could do something like this using the dlmwrite function: for i=1:1:50 dlmwrite(sprintf('%d.txt', i), magic(i));...

plus de 9 ans il y a | 0

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How do I change the resolution of an image produced by imagesc?
To use imresize, you first read the image in: a = imread('image.jpg'); Then, you apply imresize as follows (for example ...

plus de 9 ans il y a | 0

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How to draw smooth balls (spheres) and sticks (cylinders) around my XYZ points.
This should do what you're looking for regarding the spheres (but see my above comment for cylinders). % Parameters SPHE...

plus de 9 ans il y a | 1

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finding slope of a curve at some specific points
You might want to start by looking at MATLAB's gradient function. You could also use simple finite difference formulas, like: ...

plus de 9 ans il y a | 1

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Fast interp1 with 'spline'
Are you calling interp1 with a vector or lookup points? If not, doing so could give you a significant speed-up.

plus de 9 ans il y a | 0

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Data vectors with different time intervals
You should interpolate the temperature data. You can do this using a variety of methods, which you can find <http://www.mathwork...

plus de 9 ans il y a | 0

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How significantly does the platform Matlab is run on affect numerical precision?
This difference could be a result of slightly different <http://www.netlib.org/blas/ BLAS> implementations. <http://www.mathw...

plus de 9 ans il y a | 0

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3D mesh/surf plot puzzle
You should try using the bar3 function, as follows: bar3(img, 1.0) The 1.0 sets the width to unity, so that the bars a...

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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

plus de 9 ans il y a

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Clean the List of Names
Given a list of names in a cell array, remove any duplications that result from different capitalizations of the same string. So...

plus de 9 ans il y a

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Displaying the order of objects on an axis
You're having this problem because the rectangle command draws the object in the xy plane, with z=0. Therefore, since I'm guessi...

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Back to basics 15 - classes
Covering some basic topics I haven't seen elsewhere on Cody. Return the class of the input variable.

plus de 9 ans il y a

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Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

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Chris McComb

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