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Jonathan Sullivan


MIT Lincoln Laboratory

2011 年からアクティブ

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Best method for identifying the color
Think of the color of a pixel being a vector in a 3 dimensional space. What you want to do is find the angle of the color vector...

7年以上 前 | 0

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table for string
You'll need to make you table a cell array. Try this: a = 12345; b = num2str(a); Table{1} = b; % Notice the curly brackets...

10年弱 前 | 1

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質問


Retaining Minor Grid Status Upon Loading a Saved Figure
I seem to be running into an issue that I can't seem to solve. I can't seem to save the state of the minor grid lines. I'll make...

約11年 前 | 0 件の回答 | 0

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how to put heading for columns of matrix?
If you have MATLAB 2013b, I would look into using tables doc table

11年以上 前 | 1

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Weighted markers for scatter plot
help scatter

11年以上 前 | 0

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please help with this function
help atan2 doc atan2

11年以上 前 | 0

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Is there an easy way to find the radius of curvature of a series of points?
Yup. There are a few solutions on the file exchange. For 2D lines try this <http://www.mathworks.com/matlabcentral/fileexchan...

11年以上 前 | 0

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Problem with a for loop
It's much easier than this. The function *mean* allows you to specify a dimension over which to operate. For you, you would ...

11年以上 前 | 0

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How can I reshape a 3D matrix without changing the order of the data
Use the function *permute*. It switches the order of the dimensions. You would want something like: A = permute(A,[3 1 2...

11年以上 前 | 2

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Copy file from one network computer, to another
Not really. If you want to bypass your machine you'll need to execute the command on either the source or the destination machin...

11年以上 前 | 0

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Boolean Variables in Matlab
No. MATLAB does not have any native bit sized data types. The best you are going to be able to do is to (without creating your o...

11年以上 前 | 0

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How to open file array with fopen?
You just need to index into J properly. J looks to be a cell array so you need to use curly brackets. Try replacing your fope...

11年以上 前 | 0

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re-arrange matrix with for loop
reshape(permute(rgb,[2 1]),[],3)

11年以上 前 | 0

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while statements - imposing two conditions
Sounds like either *L2normpercentold* or *Diffpart1* are not scalars. How you get around this depends on what type of behavior y...

11年以上 前 | 0

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Directory not loading in the correct order
Just sort the list of file by date before doing anything with them. Example % Get the files in the directory wd='C:...

11年以上 前 | 0

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How to choose the value of db(Daubechies)?
doc wfilters

11年以上 前 | 0

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Get location from GPS coordinates?
You will need to write a script that uses a geocoding service. <https://developers.google.com/maps/documentation/geocoding/ Goo...

11年以上 前 | 0

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How to copy one image to another (blank) pixel by pixel?
You should try this: Xc = imread('IM1.jpg'); blank = Xc; imshow(blank);

11年以上 前 | 1

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Indexing negative and positive elements of a vector
help sign doc sign

11年以上 前 | 1

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Fitting Lorentzian curve to noisy data
You many want to try this: <http://www.mathworks.com/matlabcentral/fileexchange/33775-lorentzian-fit>

11年以上 前 | 0

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How to find x,y matrix using for sintax
It's really simple if you use the functions *find* and *any*. See below: ind1 = find(any(x == 1,2),1); ind2 = find(any...

11年以上 前 | 0

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Error in my code
Just do MAT(MAT == 0) = 6;

11年以上 前 | 0

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How can I randomly select a row from a matrix?
Try using *randi* Example randomRow = m(randi(size(m,1)),:);

11年以上 前 | 2

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to find the missing date and time in the time series data?
# Convert the dates to a date number using *datenum*. # Take the difference using *diff*. # Find the outliers by comparing the...

11年以上 前 | 1

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Pulling .mat files from multiple directories in one function
When you call load, you are not referencing them by their file name only (i.e. no directory). Try something like this: func...

11年以上 前 | 0

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Using regexp to capture parts of a filename
Your slash is the wrong way. Try: experimentName =regexp(str,'DD2CM(\d*)','match')

11年以上 前 | 0

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Delete letters in a string variable
To detect which charectors are letters, you can use the function *isletter*. Then just simply delete the ones that are letters ...

11年以上 前 | 2

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If statement for a values in a string
The variable *h* does appear to be a string, but rather a vector of doubles. What you want to use to determine if a scalar is eq...

11年以上 前 | 0

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Load mat files located path into a function
Not sure if I understand your problem, but it sounds like you want the data in your mat file loaded as variables in the workspac...

11年以上 前 | 0

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compare loops and matrix computation.
This has some good information on the topic: <http://www.mathworks.com/help/matlab/matlab_prog/vectorization.html>

11年以上 前 | 0

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