Seetha Rama Raju Sanapala

Last seen: environ un an il y a | Actif depuis 2014

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Passionate about science and science propagation. Currently teaching signal processing and MATLAB.

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sum of all the variables in workspace how to find?
I have some 100 numbers in the workspace with big names. I want to find the sum of all these variables in the workspace - witho...

environ 8 ans il y a | 2 réponses | 0

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Question

Comparison of gensurf and surf
What is special about gensurf? Why is it needed when we have already mesh and surface plot commands like mesh and surf?

plus de 8 ans il y a | 1 réponse | 0

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Tried to change the diagonal elements of a magic square. Could not understand the error message.
a= magic(6), diag(a)=[1 0 2 0 3 4] Error message that I got was "Subscripted assignment dimension mismatch". Do not un...

plus de 8 ans il y a | 1 réponse | 0

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Question

finite word length effects - related questions get little different results than expected - why?
We know that all computers suffer from finite word length effects. We can expect some errors - but why some related questions g...

plus de 8 ans il y a | 1 réponse | 0

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why current sample always is 513 in audioplayer properties?
I have used audioplayer several times and do not understand the meaning of several properties of audioplayer that is displayed ...

plus de 8 ans il y a | 1 réponse | 0

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Question

We create plots from vectors x and y. Is the reverse possible? Can you first draw a curve using cursor in the figure palette and then create vectors x and y from it?
We create plots from vectors x and y. Is the reverse possible? Can you first draw a curve using cursor in the figure palette a...

plus de 8 ans il y a | 1 réponse | 0

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I want to generate random (integers only between -10 and 25) mathematical expressions and also evaluate them. Can someone help with the code?
I want to generate random (integers only between -10 and 25) mathematical expressions and also evaluate them. For example -1 + ...

plus de 8 ans il y a | 3 réponses | 0

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Question

In the example given in MATLAB communication toolbox under "16-QAM with MATLAB functions", it looks like the raised cosine filtering has degraded BER. Where is the catch?
In the example given in MATLAB communication toolbox under "16-QAM with MATLAB functions", it looks like the raised cosine filte...

plus de 9 ans il y a | 1 réponse | 0

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Is Hilbert transform not defined for complex signals? In MATLAB, the function hilbert ignores if you give a complex sequence as input. Why?
Is Hilbert transform not defined for complex signals? In MATLAB, the function hilbert ignores imaginary part if you give a compl...

environ 10 ans il y a | 1 réponse | 0

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Question

Question on function variables i.e. ~
[~,I] = max(abs(xc)); This is code taken from an example in MATLAB. I read somewhere that ~ can be used to indicate 'don't ca...

plus de 10 ans il y a | 1 réponse | 0

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Question

On 'Publishing' mathematical equations using MATLAB
I am at a loss to understand the publishing of mathematical equations using MATLAB for which you can use 'publish' command. I t...

plus de 10 ans il y a | 1 réponse | 0

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How to interpret this result max on a function just like using fplot on function?
How do we explain this result from MATLAB? >> max('sin(x)') ans = 120 Also help of max says "POLYNOM/max ...

plus de 10 ans il y a | 1 réponse | 0

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Question

The working of perms
I tried perms('abc'). The doc says it is permutations in reverse lexicographic order. So I expected from the bottom - abc, acb...

plus de 10 ans il y a | 2 réponses | 0

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Question

Considering only 2-D arrays i.e. matrices only, is there a difference between flip(a) and fliplud(a)?
Considering only 2-D arrays i.e. matrices only, is there a difference between flip(a) and flipud(a)?

plus de 10 ans il y a | 2 réponses | 0

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Question

I want to show that 17^21 + 19^21 is divisible by 36 by actual computation of the integers and getting the remainder by division. Is it possible in MATLAB?
I want to show that 17^21 + 19^21 is divisible by 36 by actual computation of the integers and getting the remainder and quotien...

plus de 10 ans il y a | 2 réponses | 0

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Question

inverse of sinc function : how to evaluate?
Why does the following does not work in MATLAB? solve sinc(x)==0.707

presque 11 ans il y a | 1 réponse | 1