Community Profile # Jan Kappen

2012 以来アクティブ

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Creating an array of structs and using the field directly?
Hey guys. I'm wondering if there is a workaround for doing something like this: a = {[struct('field',1) struct('field',2)]....

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

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

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

Is my wife right?
Regardless of input, output the string 'yes'.

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

Nonrectangular grid between two lines
Hey guys, this might be a simple problem but I'm going crazy here: Assume you have two lines or direction vectors r,s from t...

6年以上 前 | 1 件の回答 | 0

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MEX function is slower than matlab script. Profiling possiblilites?
Hey guys. I am working on a toolbox for realtime classification of driving situations. For this purpose I train a least squares...

7年以上 前 | 0 件の回答 | 2

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Include libsvm in simulink, s function
Hello guys. I'm wondering how complicated it would be to call libsvm [ http://www.csie.ntu.edu.tw/~cjlin/libsvm/ ] from a si...

7年以上 前 | 2 件の回答 | 0

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Asynchronous data acquisition & filtering
Hey guys, I need your help again :( Currently I'm using a real time windows target model which receives data via the strea...

8年以上 前 | 0 件の回答 | 0

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

8年以上 前

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 ...

8年以上 前

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

8年以上 前

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

8年以上 前

Given a and b, return the sum a+b in c.

8年以上 前

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...

8年以上 前

How to generally use the stream input port in a real-time windows target model?
Hey guys, I'm wondering, how I can use the stream input port (via a generic serial interface) in a real-time windows target m...

8年以上 前 | 1 件の回答 | 0

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Understanding the rate transition block in realtime windows target
Hey guys, I have a few questions regarding the 'rate transition block' in simulink. I understand, that a fast sampled sign...

8年以上 前 | 1 件の回答 | 0

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Video processing model can't be compiled by real-time windows target
Hello guys, I've got a strange problem here. What I try to do is creating code for the real-time windows target from a model ...

8年以上 前 | 2 件の回答 | 0

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Using function handles from *.m file in simulink model
Hey all, I wonder, how i can use functions (or function handles) which are defined in an *.m script file in a simulink model....

8年以上 前 | 2 件の回答 | 0

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Finding similar symbolic expressions in a vector
Hey guys, i have following problem: Let there be a long vector containing symbolic expressions. To reduce the vector length i...

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Plot system reactions in time domain, not lsim
Hey guys, I'm searching for a way to plot system reactions in the time domain by using transfer functions. For example: ...

9年以上 前 | 0 件の回答 | 0