Cris LaPierre

Last seen: 1 day ago

MathWorks

885 total contributions since 2018

Cris LaPierre's Badges

Answered
detecting and removing eye blinks from 4-channel EEG signal
We don't have nearly enough information to help you. However, you might try using the Find Local Maxima and Minima task in the l...

7 hours ago | 0

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Z must be a matrix, not scalar or vector
z needs to be the same size as X and Y. Perhaps you mean to do something like this? t=linspace(0, 2*pi); T = meshgrid(t); x=2...

13 hours ago | 1

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How to remove first 19 rows from a multidimensional cell array
Use a cellfun. % Setup A(1)={rand(100,10)}; A(2)={rand(100,11)}; A(3)={rand(100,10)}; A(4)={rand(100,15)}; % Remove firs...

14 hours ago | 0

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RE-use helper function on multiple GUI components
Since the app structure is a structure, you can dynamically set the field names. There are a couple ways you could do it. Here's...

15 hours ago | 1

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How to make a zoom in y map in MATLAB Visualizations Custom
Can you add this to your code? geolimits([-12.210 -11.923],[-77.306 -76.936])

15 hours ago | 0

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Offline execution of a program in MATLAB online
You need to maintain an active connection or your session will time out. See Hisham's reply here.

15 hours ago | 0

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For loop is not working
A loop runs the same code over and over. That means you overwrite your variables each time. As you've written it, the result wil...

15 hours ago | 0

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overlaying 3 contourf plots into 1 figure.
All 3 contourf plots are there. You can verify this with the plot browser. You do only see the one that was plotted last. The le...

1 day ago | 0

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Put data into bins with pre-specified intervals
Use histcounts and specify the bin edges using the syntax [N,edges] = histcounts(X,edges)

1 day ago | 0

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Turning triangulation data into 3D spatial matrix
I would see if the inpolygon function can be used here. It works for 2D data, but with some creativity, you may be able to get i...

1 day ago | 1

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Plotting a single fit for multiple years by averaging the fit co-efficients of individual years.
How is your data organized? I would probably get the day-of-year for all dates, plot the data against that, and then fit a curve...

1 day ago | 0

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How we can segment the time series signal in Matlab?
You can accomplish this with the retime function. You first need to convert your data to a timetable. Then call retime using the...

1 day ago | 0

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unable to read time stamps from a csv file, unable to read the csv file in matlab
If you got it working with readtable, use that. You just need to learn how to access the data in a table. For that, see this doc...

1 day ago | 0

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Matlab GUI problem using load
The error suggests your HW_03.fig file is not in the same folder as your HW_03.m file. A gui created in Guide requires both file...

1 day ago | 0

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Put data into bins with the equal number of elements
I'd suggest looking into this file exchange submission.

1 day ago | 0

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Answered
Making a GUI to zoom in on x-axis range
A few options I can think of. Have them use the axes toolbar. It already contains tools for zooming in and out. Have them ente...

1 day ago | 0

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animate 2d plot
Here's one way to do it following the instructions on the Line Animations documentation page. I reduced the number of points to ...

2 days ago | 0

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Inserting string into specific field in table
Table variables have an assigned data type. You must set the datatype to match the data you want to store. Filenames are text, n...

2 days ago | 0

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How to replace string values in a column of a table into numeric?
I would first convert fruit to a categorical, then I would rename the categories. X.fruit = categorical(X.fruit); X.fruit = re...

2 days ago | 0

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XLS read function round off values while reading. Even in raw data type. How to get full value?
I can test in r2017a and it's reading in as expected. It doesn't know what to do with your 2nd number since there are two decima...

2 days ago | 0

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Graphing exponential function with imaginary term
I suspect it has to do with how you define theta and z. Check out the documentation for linspace. The last number is the nubmer ...

2 days ago | 0

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Want to download 480 x 367 pixels image on Matlab online. How to do it?
This images you are looking for are not contained in the zip file. Is there an additional zip file you must download for this co...

2 days ago | 0

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MAKE OBJECTIVE FUNCTION FROM ALGORITHM
You can use the Refactor tool in live scripts to convert selected code to a function. See this page.

2 days ago | 0

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Can anyone help resolve this issue?
Do you have access to the Text Analytics Toolbox? If so, consider using the removeWords function.

3 days ago | 0

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livescript: Plots not appearing in PDF export
Can you share your live script here? If not, consider contacting technical support.

3 days ago | 0

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How do I import data from multiple pages in an xls-file to an x*y*z-matrix?
If the variables are the same in each sheet, readtable can be used to create a table datatype. You can then append the table fro...

3 days ago | 0

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How do I open an excel file using xlsread?
I would recommend using readtable over xlsread.

3 days ago | 0

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help me for error -8
Perhaps this answer will provide you some helpful suggestions.

3 days ago | 0

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scroll bar callback in app designer
I don't think this is possible. Grid layouts have no available callback functions associated with them. I'm not saying there ...

3 days ago | 0

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array indexing with another array in multidimensional matrices
The issue here is that, when indexing, a vector of numbers acts on a single dimension. When indexing, a comma separates dimensoi...

3 days ago | 0

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