MATLAB is a high-level language and interactive programming environment developed by MathWorks. It is the foundation for a number of other tools, including Simulink and various toolboxes that extend the core capabilities.

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0answers
11 views

Matlab, not enought input arguments [on hold]

I have a matrix ab = [12 10] This my code, I want to make a pythagoras but it fail even to define the ab(1,1). function [x] = phyt(ab) x = ab(1,1) end It show error message like this : Error ...
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0answers
7 views

MATLAB Circuit Differential Equation [migrated]

Could anybody explain/show me how to perform to perform this on MATLAB?: I am confused about how to write out the code for the differential equations: I’ = (V_E / L) – (V_C / L) (circuit a) V’ ...
-2
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0answers
22 views

MATLAB: Calculating the Jacobian using feval and Newton's Method [on hold]

Problem: series of equations, each in the form 0 = Fa(i-1) - Fa(i) - k*a(i)*V F, k, V, and a0 are known. Do you have any ideas on how to calculate the jacobian using feval and how to find the ...
-1
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0answers
26 views

MatLab floating point comparison [migrated]

I am trying to understand the while statement in MatLab so this is what I did: i=0; while i<=20 disp(i) i=i+1; end and as I expected, MatLab displayed numbers 0-20. However with this one: ...
3
votes
1answer
88 views

Where does test fixture code fit in?

This is an unusual question since I don't believe it lends itself to typical software development practices but I hope you can prove me wrong. In MATLAB, my team have created several signal ...
0
votes
1answer
70 views

Should instance variables be bound to the instance right in the beginning of the method they are created in?

A common problem for me - and it's not really a problem, but somehow I again and again ask myself, what is the normal way to handle this - is that there is a method and within this method a couple of ...
3
votes
4answers
889 views

Why are scientific programming languages so weird? [closed]

It seems to me that programming languages meant for use in science and engineering are consistently weird compared to general-purpose languages. Some examples off the top of my head: In Matlab, each ...
1
vote
2answers
185 views

How to reduce close points

input: C matrix 2xN (2D points) output: C matrix 2xM (2D points) with equal or less points. Lets say we have C matrix 2xN that contains several 2D points, and it looks something like that: What we ...
1
vote
2answers
144 views

Is input validation necessary?

This is a very naive question about input validation in general. I'm a MATLAB user (1.5 years old) and I learned about input validation techniques such as "parse" and "validatestring". In fact, ...
0
votes
3answers
294 views

algorithm to create all possible column vectors of size N containing only ones and zeroes [closed]

I am a mathematics student and am just starting to learn about programming. I am stuck on a particular program I am trying to write for fun. I want to find an algorithm to create all possible column ...
1
vote
1answer
909 views

Programming Discrete Wavelet Transform

I am trying to program Discrete Wavelet Transform in Matlab. I do understand that their are various libraries available, but my project requires that I must implement it from scratch. I am taking a ...
3
votes
1answer
330 views

How do I transparently cache data in intermediate stages of processing?

I am working with MATLAB on a model reduction algorithm. It is basically a data processing pipeline. ckt = generate_ckt(ckt_properties); freq = generate_fpoints(fconfig); result = ...
5
votes
1answer
2k views

In MATLAB, how can 'preallocating' cell arrays improve performance?

I was reading this article on MathWorks about improving MATLAB performance and you will notice that one of the first suggestions is to preallocate arrays, which makes sense. But it also says that ...
1
vote
2answers
181 views

Trying to sort the coefficients of the polynomial (z-a)(z-b)(z-c)…(z-n) into a vector

So I have a factored polynomial of the form (z-a)(z-b)(z-c)...(z-n) for n an even positive integer. Thus the coefficient of z^k for 0 <= k < n will be the sum of all distinct n-k element ...
4
votes
5answers
451 views

Lines of Code vs. Optimal Language [closed]

I was wondering whether it is possible to give any advice as the the maximum number of lines of code at which one should consider switching from say MATLAB to a more low level language? Is it even ...
0
votes
2answers
247 views

Data acquisition, storage and management

I have a device that can measure different values over time, one sample per second. After one measurement run I can export the data in form of a CSV-file. One row per second with timestamp and about ...
14
votes
3answers
1k views

Implementing technical paper algorithms in C++ or MATLAB

I am an Electrical Engineering undergrad. I've reading many technical papers about Signal and Image processing algorithms (reconstruction, segmentation, filtering, etc). Most of the algorithms shown ...
9
votes
5answers
8k views

Moving to Python (SciPy and NumPy) for Scientific Computing [duplicate]

Just read a presentation about using Python for Scientific Computing. I am currently using MATLAB (student license FTW, which will expire when I graduate soon). So I was wondering how matured SciPy ...
8
votes
7answers
3k views

How to explain OOP to a matlab programmer? [closed]

I have a lot of friends who come from electrical / physical / mechanical engineering background, and are curious about what is "OOP" all about. They all know Matlab quite well, so they do have basic ...
3
votes
4answers
2k views

Who organizes your MATLAB code? [closed]

After reading http://stackoverflow.com/questions/2326609/how-to-organize-matlab-cod, I had a follow up question. If you work in a group of MATLAB programmers, who enforces the organization of the ...
15
votes
7answers
987 views

Is there a recommended way to communicate scientific/engineering programming to C developers?

I have a lot of MATLAB code that needs to get ported to C (execution speed is critical for this work) as part of a back-end process for a web application. When I attempt to outsource this code to a C ...
17
votes
6answers
5k views

Surviving MATLAB and R as a Hardcore Programmer

I love programming in languages that seem geared towards hardcore programmers. (My favorites are Python and D.) MATLAB is geared towards engineers and R is geared towards statisticians, and it seems ...