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Opening many excel files into different matrices
A cell array would be ideal. Example: list = {'file1.xls','C:\data\file2.xls', ....}; for i = 1:numel(list) data{i} = x...

mehr als 9 Jahre vor | 1

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Error:Subscript indices must either be real positive integers or logicals
The simple answer, which should work is to drop all of the (x) you've got. The reason being that it looks like you're confus...

mehr als 9 Jahre vor | 0

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How can i get the x value for a chosen y value?
[maxY index] = max(abs(wave)); index is either the X value, or something you can use to get the x values, eg, x = 1...

mehr als 9 Jahre vor | 1

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how can give an image as input in a fuction?
Ok, if by "image" you mean filename, then you can do it like this: folder = 'C:\My Images\'; files = dir([folder '\*.jpg...

mehr als 9 Jahre vor | 0

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Please help me with this simple problem? Confusing
Is the tolerance as simple as being the "epsilon" of the numbers involved? The machine epsilon is the smallest number that c...

mehr als 9 Jahre vor | 0

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Remove vertical stripping noise
Here's an answer that probably hits what you need... column_offsets = median(im); column_offsets = column_offsets - min(co...

mehr als 9 Jahre vor | 3

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Matlab2014a pcode and functions: cannot generate pcode due to input argument error?
I know this is probably obvious, but you are using "pcode" correctly? pcode filename or pcode('filename')

mehr als 9 Jahre vor | 0

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indexing a variable in matlab
The normal right answer is to just use arrays. This limits you to using normal indexing techniques (logical & positive integer) ...

mehr als 9 Jahre vor | 2

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how to use image in exterma mfile?
Ok, I'll translate the problems: Undefined function 'extrema' for input arguments of type 'uint8'. That means that the ex...

mehr als 9 Jahre vor | 0

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plotting without displaying in an m file which calls another .m file
saveas will let you save figures. figures can be invisible. fig = figure('visible','off'); axis_id = gca; plot(axis_id,...

mehr als 9 Jahre vor | 0

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how to find indices that fulfil a certain criteria
after_7 = 1:numel(vector) > 7; after_17= 1:numel(vector) > 17; twos_after_7 = vector == 2 & after_7; twos_after_17 = vect...

mehr als 9 Jahre vor | 1

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Absorption of heat by laser light into material, calculation
You need to get the physics clearer. 1. Reflection, by the plastic, of the laser light will reduce the energy absorbed. ...

mehr als 9 Jahre vor | 0

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Creating variable name using sprintf and field of a structure
I agree with the advice to NOT name dynamically name variables in a loop. It more often leads to pain than not. You would be...

mehr als 9 Jahre vor | 0

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Plotting data from struct
plot(someStruct.a, someStruct.c,'k-o') That's the answer to the question you're asking. I suspect that ACTUALLY, you wan...

mehr als 9 Jahre vor | 0

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Using Mathlab with Ruby
I asked a similar question a couple of weeks ago and haven't managed to do much with it. http://www.mathworks.co.uk/matlabce...

mehr als 9 Jahre vor | 0

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Help: Excel manipulation in Matlab
You probably don't need a for loop: The function "xlsread" reads in the contents of an entire sheet (ALL columns), by default...

mehr als 9 Jahre vor | 0

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Automatic import of Spread sheet data
It is possible to use a macro in excel that will tell matlab, in some way, if it has been updated. It is also possible to ju...

mehr als 9 Jahre vor | 0

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MATLAB date conversion and analysis
Matlab datenum follows the convention of "day = 1" "hour = 1/24" "minute = 1/(24*60)" If today has the value of 5235...

mehr als 9 Jahre vor | 0

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uigetfile only let me choose file from the current folder.how can i choose from anywhere?
selected=sprintf('%s',filename); should be selected=sprintf('%s',fullfile(pathname,filename));

mehr als 9 Jahre vor | 0

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M-file created in previous version, not working in advanced version.
I've found that simulink files don't always transfer neatly from one version of matlab to a newer version. You'll likely find th...

mehr als 9 Jahre vor | 0

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Using a variable in fopen
init = 'W:\Examples'; folder = dir(init) for i = 1:numel(folder) % do something with folder(i) to figure out if it's ...

mehr als 9 Jahre vor | 0

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Adding parameter to file name string when saving a figure as a jpeg
filename = ['Point cloud ' num2str(5) '.jpg']; saveas(1,filename)

mehr als 9 Jahre vor | 1

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Problem of writing a mixed type cell array to a csv file
If you want to write it as a csv file and if it must be a csv file and the data is really variable format, then you may have to ...

mehr als 9 Jahre vor | 0

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Set a time limitation on algorithms
I may have an answer: Matlab can be used to manage "parallel" computing jobs. One of the methods allows Matlab to stipulate a...

mehr als 9 Jahre vor | 1

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Help with average of elements in a matrix
n=4 elements = numel(M); sets = round( elements / n / size(M,2)); elements_to_use = sets * n * size(M,2); Mnew = squeez...

mehr als 9 Jahre vor | 0

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Advanced fitting to analytical functions
"fit" will try to fit specified functions. - You'll need to play around with it. There's a 3rd party thing called Eureqa tha...

mehr als 9 Jahre vor | 0

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Combining two matrices of the same size to create a new matrix where each cell contains both values from the parent matrices.
You've got 2 options: 1. Create a 240 x 320 _x 2_ matrix: (or 2 x 240 x 320 or whatever) C(:,:,1) = distance_map; C(:,:...

mehr als 9 Jahre vor | 0

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Save Matrix values when values change from NaN to a Number in MATLAB
if you ONLY get nans in entire columns, this'll work: numbers = oldmatrix(~isnan(oldmatrix)); numbers = reshape(numbers, 3...

mehr als 9 Jahre vor | 0

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Storing points into an array
p = img(75, 104,:);

mehr als 9 Jahre vor | 0

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Using all values in a matrix as inputs for a function.
You need to distinguish the fact that matlab, by default, does matrix multiplication, division and powers by the actual matrix m...

mehr als 9 Jahre vor | 0

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