Robert Snoeberger

MathWorks

Active since 2014

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How is data passed from MATLAB to python?
All of the data conversions given in the following page of the documentation are passed by value (ie. data is copied from the MA...

ongeveer 7 jaar ago | 0

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Answered
Save Python List to MAT File (R2015b)
"Saving (serializing) Python objects into a MAT-file" is listed as a limitation in the documentation [1]. # <https://www.math...

ongeveer 7 jaar ago | 0

Answered
Matlab-python interface broken ?
When python is running within MATLAB, it ends up using MATLAB's MKL. It looks like your Python code is incompatible with MATLAB'...

ongeveer 7 jaar ago | 6

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Calling custom Python (.py) files will not update with new file saves
You need to reload the module after you change and re-save the .py file. The documentation describes the workflow for making the...

ongeveer 7 jaar ago | 0

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why does Matlab return ' expression to the left of the equals sign is not a valid target'
MATLAB doesn't support keyword arguments [1]. To pass keyword argument to Python, use pyargs [2]. Example: N = py.oanda...

ongeveer 7 jaar ago | 2

Answered
How do I call a custom python function from matlab that uses an import statement?
Based on the error message, "TypeError: 'float' object cannot be interpreted as an index" you are passing a double when you shou...

meer dan 7 jaar ago | 4

meer dan 7 jaar ago | 0

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MCR Applications with Python Functions
You could try the workaround suggested <https://www.mathworks.com/support/bugreports/details/1325030?partial=collapsed here> .

meer dan 7 jaar ago | 0

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Why are my graphs closing when I use the matlab api?
My guess is that MATLAB is exiting when your script finishes. Since you are starting a new MATLAB session, the lifetime of MATLA...

meer dan 7 jaar ago | 0

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How to have matlab engine return value of variable in python
1) Use eng.workspace['VariableName']. See <https://www.mathworks.com/help/matlab/matlab_external/use-the-matlab-engine-workspace...

meer dan 7 jaar ago | 0

Answered
I'm using the Matlab API for Python because I want to use the robotics toolbox.
Based on the complaint about integers in the error message, I'm guessing that you need to make everything floats (add decimal po...

meer dan 7 jaar ago | 0

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Segmentation violation Mac on startup
It looks like you hit this <https://www.mathworks.com/support/bugreports/search_results?utf8=%25E2%259C%2593&search_executed=1&k...

meer dan 7 jaar ago | 2

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Calling python module from matlab causes segmentation fault in h5py
Could you rebuild h5py with hdf5 version 1.8.12?

meer dan 7 jaar ago | 1

Answered
Pythons unpack_From in Matlab
The function typecast [1] might do what you want. I'm going to give an example of how to use it but I need to make a few assumpt...

meer dan 7 jaar ago | 1

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letter yes yes & letter no no
Split a string into two strings, wherein the first string has all alphabetic letters and the second string has all the remaining...

bijna 8 jaar ago

Solved

Reverse the Words (not letters) of a String
*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

bijna 8 jaar ago

Solved

Space Saver
Remove all characters that are below a space in ASCII value.

bijna 8 jaar ago

Solved

Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

bijna 8 jaar ago

Solved

Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

bijna 8 jaar ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

bijna 8 jaar ago

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Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

bijna 8 jaar ago

Solved

Calculate the derivative of a polynomial
Example: in = [ 1 1 1 ] out = [ 2 1 ]

bijna 8 jaar ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

bijna 8 jaar ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

bijna 8 jaar ago

Solved

High school cafeteria
Given an input vector of positive integers, return a row vector with the primes first (in increasing order) and the composites n...

bijna 8 jaar ago

Solved

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

bijna 8 jaar ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

bijna 8 jaar ago

Answered
How to use RPC protocol (Remote Procedure Call) to send a HTTP request as formatted JSON to a web server?
The documentation for webread says that it only supports application/x-www-form-urlencoded for HTTP POST requests [1]. Since you...

bijna 8 jaar ago | 1

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Answered
Is it possible to import and use third party matlab functions/packages in python?
It looks like your problem is with import. I don't think the import that executes in your script, |load_javaplex|, is available ...

bijna 8 jaar ago | 1

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Answered
problems with code call from python
The error message says, "array of MATLAB int64 type cannot be returned..." One way to fix this is to return a double array from ...

bijna 8 jaar ago | 0

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Robert Snoeberger

MathWorks

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