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Mateusz


Active since 2011

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How to read all lines in txt file satisfying some condition
Let's assume we have the following format in the file: 1 str1 0 str2 1 str3 ... that is in each line we have: the first c...

ungefär 11 år ago | 1 answer | 0

1

answer

Question


Is it possible to recover from the Matlab Segmentation Fault error?
Is it possible to recover from the Matlab Segmentation Fault error from the Matlab source code? More precisely I am talking a...

ungefär 11 år ago | 1 answer | 0

1

answer

Question


Visualization of the legend outside of the image
Hi, I am using the following code to visualize the image with legend: currImg = imread(imagePath); fig = figure('...

ungefär 11 år ago | 1 answer | 0

1

answer

Question


Is there faster way of computing loop; max(w .* x); pool; ?
Let's assume I have a matrix x \in R[#features, #data] and matrix w \in R[#units, #features]. Currently I am computing max per u...

nästan 12 år ago | 1 answer | 0

1

answer

Question


How to check the current line (debug)
I often use 'keyboard' command to debug my programs (since sometimes I have to use command line and matlab -nodisplay setup). Wh...

mer än 12 år ago | 2 answers | 0

2

answers

Question


compilation using matlab and bash scripting
I have a bash script where I invoke the matlab compiler with some arguments, that is mcc ${MCC_ARGUMENTS}. Now I would like to ...

mer än 12 år ago | 1 answer | 0

1

answer

Question


Finding indices when vectors is used
Assume we have x = [1,2,3,1]; If I execute idx = find(x == 1) then idx == [1,4]. Is there similar command for extracting...

nästan 13 år ago | 1 answer | 0

1

answer

Question


Concatenation in Matlab (with or without copying elements)
Assume we have X = [A, B] where A and B are two vectors (or matrices). Is concatenation operation copies elements in A? If so is...

nästan 13 år ago | 2 answers | 1

2

answers

Question


mex etymology and prononcuation
What is the meaning of mex (where does it come from)? What is correct pronunciation? In particular the last letter is English 'x...

nästan 13 år ago | 1 answer | 1

1

answer

Question


Difference between adding and including (MCC)
What is difference between adding (option -a) and including (option -I) folder to the working path during compilation (MCC)? ...

nästan 13 år ago | 0 answers | 0

0

answers

Question


Fast multiplication of rows of one matrix and columns of the second matrix
I would like to compute v(k) = A(k, :)* B(:, k) as fast as possible (no-loops). Currently, I am doing diag(A * B) but it h...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


Fast function application
Hi, Let a be n-dimensional vector, B n-by-n dimensional matrix, f(a, b) - binary function that operates on two vectors, and r...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


Optimization with respect to matrix
Hi, I have the following problem to solve: argmin_X |||| Xu - b ||||^2 where u and b are given (vectors), and |||| . |||| is l...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


mcc and startup
Hi, In startup.m in my home directory I use addpath to include additional libraries. Now I would like to compile some source ...

mer än 13 år ago | 1 answer | 0

1

answer

Question


How to deal with the problem of the changing size data?
I have the following code: im = {}; k = 0 while not_end(): im = {im{:}, dir(filepath, fileArray(k))}; k = k + 1...

mer än 13 år ago | 1 answer | 0

1

answer

Question


How to get data from figures produced by errorbars?
I have a figure which was produced by using errorbars command. It plots the mean data and corresponding error bars. Now I woul...

mer än 13 år ago | 1 answer | 0

1

answer

Question


Merging two figures
I have two figures with different plots. I would like to merge them into one figure that contains both plots and with keeping th...

mer än 13 år ago | 4 answers | 2

4

answers

Question


Draw the minimal value from the plot
Let assume we have plot of some function (actually we have plot of the function-values at some sample points). Is it possible to...

mer än 13 år ago | 1 answer | 0

1

answer