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Cris LaPierre

MathWorks

Last seen: 1 day ago Active since 2018

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Answered
Using mobiledev to acquire sensor data with MATLAB Grader
No, MATLAB Grader does not currently provide a way for learners to use their own data in an assignment.

1 day ago | 1

Answered
Outerjoin isn't matching the same values in two different tables
Not sure how you created the time steps, but datetimes apply a display format to the actual data. Perhaps the actual values do d...

9 days ago | 2

Answered
MATLAB FUNDAMENTALS 11.4 Issue with y-data in MATLAB plot not being correct
None of this code is necessary. release.Properties.VariableNames(1) = "Title" release.Properties.VariableNames(2) = "ReleaseD...

11 days ago | 0

Answered
[Noob here] I need help with a file exchange which uses MATLAB function
The function spa has no outputs. It instead prints the results ot the screen. I would modify the function declaration to return ...

12 days ago | 0

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Answered
Pulling Columns by Name in CSV Files
See this page: Access Data in Tables Also, consider using readtimetable instead of a readtable. CurrentData = readtimetable('d...

18 days ago | 0

Answered
Synchronize / Outerjoin two timetables, without copying shared Variables.
outerjoin works with timetables. However, what you have shared here is not a timetable. Define your left and right keys to be ti...

22 days ago | 1

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Answered
How to install Classification Learner app?
You need to install the Statistics and Machine Learning Toolbox. If you do not have it installed, you can use the Add-Ons explor...

23 days ago | 1

Answered
Unrecognized function or variable in a code
You create an anonymous function, k, that uses a variable a in the function. However, this variable was not defined at the time ...

23 days ago | 0

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Answered
Don't know what is wrong with my output of this code
Your result has stitched all 3 images together. However, the function should be returning a single image (the moving one only). ...

23 days ago | 0

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Answered
i canot save my files
A recent change is impacting the toolstrip. A fix has already been released, but if necessary, you can save your changes to an e...

24 days ago | 0

Answered
Cannot save file in Matlab online(Basic)
A recent change is impacting the toolstrip. A fix has already been released, but if necessary, you can save your changes to an e...

24 days ago | 2

Answered
What's the best way to visualize position/zscore over multiple subjects?
Use groupsummary: B = groupsummary(A,groupvars,groupbins,method) Z = readmatrix('zscore.csv'); x = readmatrix('xcord.csv'); n...

26 days ago | 0

Answered
How to add math symbols to Live Script text?
Try clicking the 'Insert Equation' icon to open the equation editor. https://www.mathworks.com/help/matlab/matlab_prog/insert-...

27 days ago | 0

Answered
Problems with Matlab files
Please contact support: https://www.mathworks.com/support/contact_us.html

27 days ago | 0

Answered
How to extract latitude and longitudes from a table given the timestamp range?
I would use isbetween to create an index of the table rows that are between the lower and upper times. I would then use that i...

29 days ago | 0

Answered
Converting Unix Timestamp to Date Time
Set the 'datatype' option to 'posixtime'. As an example, the Unix time stamp 1718195288 is Wed Jun 12 2024 12:28:08 GMT+0000 ...

1 month ago | 0

Answered
Where is the search bar on the Matlab File Exchange website?
This is a communicty forum. To share feedback/enhancements directly with MathWorks, use this link: https://www.mathworks.com/su...

1 month ago | 0

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Answered
Preparing input data for classification using LSTM
It is a mat file. This is a way of saving variables in MATLAB to a file (see save). It loads 3 variables to the Workspace data ...

1 month ago | 0

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Answered
I'd like to do various things, including controlling the dimensions of the plot box. What I do here with xlim, ylim, and zlim doens't work.
You are creating varlables named xlim, ylim, and zlim rather than setting the corresponding axis properties. Also, axis equal ch...

1 month ago | 0

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Answered
The course answer is wrong
When I add your answer into the current Chinese version of the course, the answer is marked correct. Please try submitting ag...

1 month ago | 0

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Answered
Hi everyone , i have LSTM trained model (time series sequence) which i want to load in my simulink model. how can i proceed with it. any help please
Train your network in MATLAB, then perform inference with it in Simulink using the predict block from the Deep Learning Blockset...

2 months ago | 0

Answered
what is .data extension in matlab
It is not an extension. X is a structure with a field named 'data'. Learn more here: Structure arrays

2 months ago | 0

Answered
How to visualise data in 4D or 5D?
See this answer: How to plot 5D in MATLAB Basically, 3 of the dimensions can be X,Y,Z. Additional dimensions can be represented...

2 months ago | 0

Answered
Is there any way to speed this up?
My question is if it has to be done with isosurfaces. Here's an approach that uses scatter3. You can adjust the marker size to c...

2 months ago | 0

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Answered
Font size of command window is much larger than the one in Editor
You can Zoom in and out in the editor. Try switching to the View tab and use the Zoom In or Zoom Out options to adjust the edito...

2 months ago | 0

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Answered
Indexing array of strings to the full string instead of one letter
In that case, use strings (double quotes) instead of character arrays (single quotes). propnames = ["density", "entropy", "enth...

2 months ago | 1

Answered
how can I change worldmap axes grid and label?
Use setm to set the meridian line & label locations ('MLineLocation' and 'MLabelLocaton' properties). Also, you can use gridm ...

2 months ago | 0

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Answered
Oxford Battery degradtion dataset
I would download the data directly from Oxford as a mat-file. Then you can just load the mat file into MATLAB, and have all the ...

2 months ago | 0

Answered
Can I use splitapply with two grouping variables and how can it be done in matlab app designer?
Yes, you can use two grouping variables. However, the output is still an Nx1 vector of the unique groups (combination of the gro...

2 months ago | 0

Answered
Troubles With Image Resizing
If the Medical Imaging Toolbox is included in your license, I suggest using extractSlice to get the voxel information for your s...

2 months ago | 0

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