mathematica to matlab converter

2012 1 14
2 个回答
更新时间：2023 4 12
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0 个投票

Hello. I need to convert Mathematica program to matlab. I have tried tomatlab function but doesn't know how to use it.I only need to convert some expressions.
suggest a solution

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回答（2 个）

Walter Roberson
Walter Roberson 2012-1-14

1 个投票

In such situations the method that is most effective for me is understanding what the source code is doing and rewriting the functionality in the second language.

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LOKESH
LOKESH 2012-1-14
I totally agree with that but i can't do the partition function?How to do that in matlab.Flat() is available in matlab,what i need to do for Partition()?
Walter Roberson
Walter Roberson 2012-1-14
编辑：Walter Roberson 2023-3-26
"Your Honor, the council is assuming facts that are not in evidence."
In other words, do not assume that people will refer back to and remember your previous postings.
http://www.mathworks.com/matlabcentral/answers/24706-bitxor-operation
"I need to convert the following expressions into matlab:
B=Flatten[B];
L=partition[L,length];"
I do not find any Mathematica function named "partition". There is a "Partition" function though, http://reference.wolfram.com/mathematica/ref/Partition.html . The equivalent to that function would depend upon which data structure you wanted. reshape() might be appropriate, or mat2cell() might be appropriate.
LOKESH
LOKESH 2012-1-16
Thanks Walter.
For Flattening the image matrix i did:
B=B(:);
For partition i am getting error in reshape
i want the L to a square image of size length
I did:
L1=reshape(L,length);
ERROR:
??? Error using ==> reshape
Size vector must have at least two elements.
Error in ==> rk4_CHEN at 140
L1=reshape(L,M);
OR
L1=reshape(L.length,length);
ERROR:
??? Error using ==> reshape
To RESHAPE the number of elements must not change.
Error in ==> rk4_CHEN at 140
L1=reshape(L,M,M);
Suggest solution
Walter Roberson
Walter Roberson 2012-1-16
I suspect you want
L1 = reshape(L, length, []).' ;
And to be consistent with Mathematica, I suspect that your Flatten should be
B1 = reshape(B', [], 1);
In both of these cases, I am presuming that you are storing row-wise (as Mathematica would) rather than column-wise (as MATLAB would.)
LOKESH
LOKESH 2012-1-18
I am going from scratch as i am unable to get from above solution.
Please suggest what following lines mean in mathematica:
pixelvalues=A[[1,1]];
Dimensions[pixelvalues]
lg=Length[pixelvalues]
Where A is jpeg image..
as i am confusion of that does first line mean pixel value at point A(1,1).
Walter Roberson
Walter Roberson 2012-1-18
It has been pretty much a decade since I did any serious Mathematica programming; it would be easier for you to look up the functions on the Wolfram site.

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NNM
NNM 2017-10-26
移动：DGM 2023-4-12

1 个投票

Too old a thread, but this answer may be helpful for some visitor. You can use ToMatlab package built for mathematica http://library.wolfram.com/infocenter/MathSource/577/ Usage: Place the file in applications folder of your base directory.
<<ToMatlab`
SOME EXPRESSION //ToMatlab

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2012-1-14

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