# Robert Snoeberger

### MathWorks

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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...

nästan 7 år ago | 0

| accepted

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...

ungefär 7 år ago | 0

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'...

ungefär 7 år ago | 6

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...

ungefär 7 år ago | 0

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...

ungefär 7 år ago | 2

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...

ungefär 7 år ago | 4

Pubmed API: What are systemID and publicID?

It is possible to avoid XML by using |webread| and setting the |retmode| parameter to |'json'|. JSON is easier to work with beca...

mer än 7 år ago | 0

MCR Applications with Python Functions

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

mer än 7 år ago | 0

| accepted

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...

mer än 7 år ago | 0

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...

mer än 7 år ago | 0

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...

mer än 7 år ago | 0

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...

mer än 7 år ago | 2

| accepted

Calling python module from matlab causes segmentation fault in h5py

Could you rebuild h5py with hdf5 version 1.8.12?

mer än 7 år ago | 1

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...

mer än 7 år ago | 1

| accepted

Solved

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...

mer än 7 år 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...

mer än 7 år 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...

mer än 7 år 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...

mer än 7 år ago

Solved

Determine if input is odd

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

mer än 7 år ago

Solved

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...

mer än 7 år ago

Solved

Calculate the derivative of a polynomial

Example: in = [ 1 1 1 ] out = [ 2 1 ]

mer än 7 år 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...

mer än 7 år 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 ...

mer än 7 år 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...

mer än 7 år ago

Solved

Get the length of a given vector

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

mer än 7 år 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...

mer än 7 år ago

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...

mer än 7 år ago | 1

| accepted

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 ...

nästan 8 år ago | 1

| accepted

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 ...

nästan 8 år ago | 0

| accepted