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Rollin Baker

MathWorks

2017 年からアクティブ

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I'm an engineer at MathWorks with an education in computer science and hardware design.

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  • Knowledgeable Level 2
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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 ...

6年以上 前

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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...

6年以上 前

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

6年以上 前

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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...

6年以上 前

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

6年以上 前

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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.

6年以上 前

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

6年以上 前

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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 ...

6年以上 前

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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...

6年以上 前

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Can't install any toolboxes because can't write to /usr/local/MATLAB/R2017
Hi Paul, For any installation issues, you will want to contact MathWorks Technical Support. They will likely be able to help ...

7年以上 前 | 1

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Why is there an error when I call my function?
You are seeing this error because you are trying to access 'z(2)', but 'z' only contains one element. It seems that you are expe...

7年以上 前 | 0

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after scatter3(), how to draw a contour line in the same figure？
Hi Hong, As KSSV said, you just need to call 'hold on;' to plot both graphs on the same figure. I don't know exactly what you...

7年以上 前 | 0

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Changing solution when using sparsity pattern with ode15s
Hi Carsten, I'm not totally sure if I understand your workflow, but I found a documentation page that details how MATLAB solv...

7年以上 前 | 0

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How to display different graphs depending on the position of the mouse pointer on an image?
Hi Guillaume, If your image is on a figure, then you could use the 'WindowButtonMotionFcn' callback to invoke a custom funct...

7年以上 前 | 0

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Im having problems with the reconstruction through two-channel filter bank when I use my audio files.
Hi Christian, The reason you are seeing zeros for your final result is because you are overwriting all previous values for 'h...

7年以上 前 | 0

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Extraction of a touchstone file from rlcg data for the multi-port file
Hi YoungGon, Have you looked at the 'rfwrite' function yet? It can handle multiple ports and seems like a good fit for what y...

7年以上 前 | 0

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ROS Indigo Virtual Machine Download
Hi Anastasios, The link worked for me, and seems to work for other users, so the issue must be somehow specific to your envir...

7年以上 前 | 0

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Here is my code so far, how would I code a checkWin function that will determine the winner of the tic tac toe game?
Hi Sterling, You didn't specify exactly how you were modeling your tic-tac-toe board, but I'm going to assume you are storing...

7年以上 前 | 1

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setting parameters for 4 Blocks (wrong number of input arguments, should be odd?)
Hi Bünyamin, The reason you are seeing this error is because the 'set_param' function is only meant to be called on a single ...

7年以上 前 | 1

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What is the difference in capability for DSP and Signal Analysis?
Hi Andrew, There are two toolboxes that jump out to me that seem like a good fit for your project. 1) <https://www.mathwo...

7年以上 前 | 0

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i want a code for hsv space quantization in which hue(0,360) divided in 8 channel, and S [0,1]and v [0,1]divided in to 3 shares. and also if possible code for dominnant color descriptor.
Hi Harsh, Assuming you have the RGB values for the image you want to convert, you can simply use the rgb2hsv function. The do...

7年以上 前 | 0

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How do I write individual 'labels' for each slice (e.g. ImageJ) of a multi-page TIF in Matlab?
Hi Dhrubajyoti, Looking through the MATLAB documentation, I was able to find a "PageName" tag for TIFF objects. You can use t...

7年以上 前 | 0

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If i have 10 random (x,y) coordinates in form of Z given below gives the location of nodes.How to give number labelling to these coordinates?And how to construct a (node and link i.e G(v,e) )graph with weights equal to the distance between the nodes?
Hi Sneha, You can create your graph using the "digraph" function, and determine the weights using the "pdist" function. This ...

7年以上 前 | 0

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Any MATLAB functions for prediction index and Brier score
Hi Eric, MATLAB has quite a few options for your use case, particularly within the Statistics and Machine Learning Toolbox....

7年以上 前 | 0

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Unable to connect arduino to MATLAB R2016b through the MATLAB Support Package for Arduino Hardware
Hi Giulia, Some users have reported that connecting to an Arduino can be very slow if your computer's Bluetooth is turned on....

7年以上 前 | 0

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Can I implement a spatial derivative in a simscape custom component?
The beginning of your question is a bit unclear. You mention you want to take the derivative of H with respect to M, but you the...

7年以上 前 | 0