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David Kusnirak


Last seen: 3 years ago |  Active since 2012

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Matlab COM connection using an actxserver
Hello, I'm running a Matlab script to invoke an another software (Surfer) to calculate grids from data. The code was download...

6 years ago | 1 answer | 0

1

answer

Question


How to create Gauss noise within the interval
I have an interval with lower boundary at a = -0.005 and upper boundary b = 0.005. I need to create the Gauss white noise within...

11 years ago | 3 answers | 0

3

answers

Question


cell multiplication with a vector
Hi, I have a cell structure (Aa), where each cell is a square sparse matrix and I need to multiply each cell with a vector (f...

11 years ago | 1 answer | 0

1

answer

Answered
How to increase font size on MacBook Pro Retina Display 15" (Matlab 2013a)?
In the home menu find the preferences button, there you can change the font size.

11 years ago | 0

Question


How to reduce number of loops
Hello, I have code, which assembles coefficients into large sparse matrix. My coding seems to be inefficient as I use 3 loops...

11 years ago | 1 answer | 0

1

answer

Answered
How can I save my data in my editboxes to my .mat file?
Hi, if you want to get the written value in the edit box you should use save(filename, get(handles.edit1,'value')); t...

11 years ago | 0

Question


Ax = b for a lot of different b‘s
Hello, I have a system of equation _Ax = b_, where _A_ is very large (n = 3e5 - 8e5) and sparse coefficient matrix, _b_ is so...

11 years ago | 1 answer | 0

1

answer

Answered
discrete second order derivative operator for unequally spaced data
Thanks for hints. However I'm not as interested in the solution as in the operator itself, I need to know how does it look and w...

12 years ago | 0

Answered
How can I move the position of my GUI on the screen from the default?
hi, try to change units from pixels to normalized for example set(handles.figure_main,'Units', 'normalized'); se...

12 years ago | 0

Question


discrete second order derivative operator for unequally spaced data
Hi, I need help to obtain a discrete second order derivative operator, that could be applied on a matrix. The best way, I gue...

12 years ago | 4 answers | 0

4

answers

Question


non linear least squares problem using BFGS
Hello, I need to find solution to a non linear least squares problem using Gauss-Newton method, however I am only able to com...

12 years ago | 1 answer | 0

1

answer

Question


curvature of a discrete function
Hello, I need to compute a curvature of a simple 2D discrete function like this one: x=1:0.5:20; y=exp(x); ...

12 years ago | 3 answers | 0

3

answers

Question


Data transformation into polygons
Hi all, I need to transform a dataset into polygons without any free space. Using a convex hull techniques i got free space i...

13 years ago | 0 answers | 0

0

answers