Cris LaPierre
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Content Feed
Why can't I generate a 3-d surface when using surf? (file)
Z must be a matrix. In your code, it is only a vector. Follow the eamples on the surf documentation page. You will find meshgrid...
10 hours ago | 0
Error using h5readc Unable to open the file because of HDF5 Library error. Reason:Unknown
If you can share your file, we can test if we get the same error. However, I would probably go straight to contacting support.
19 hours ago | 0
Can I make a standalone app (designed from App Designer) so that it runs on computers without Matlab1?
Yes. However, computers that don't have MATLAB installed will need MATLAB Runtime. See the instructions here on how to create a...
19 hours ago | 0
Attempt to execute SCRIPT scatter as a function: F:\MATLAB\R2019a\toolbox\m
See this answer.
20 hours ago | 0
How to plot the 2d complex function with amplitude and phase
Perhaps you would be interested in this File Exchange submission: https://www.mathworks.com/matlabcentral/fileexchange/66850-co...
20 hours ago | 0
| accepted
How to make the function has many process in GUI image processing?
See this page: https://www.mathworks.com/help/matlab/app-designer.html and perhaps this example: https://www.mathworks.com/he...
21 hours ago | 0
The end operator must be used within an array index expression
You cannot use end in a variable that has not yet been created. Here, you are using end in the assignment to all your variables....
1 day ago | 0
| accepted
I can't found Data Science Trail Package.
Not knowing anything about what it is you want to do, I would start with the MATLAB Essentials option. Other options that may be...
1 day ago | 0
Is there a way to download R2014b 64bit (for Windows) from the License Center?
If you see what Rik sees, the 'Download for Windows' is the 64 bit version. 'Download for Windows (32-bit)' is the 32 bit vers...
2 days ago | 0
MATLAB Onramp can not be accessed
I had something like this recently happen to me. Here is what worked for me. Navigate to the course page Under the Resume Cour...
3 days ago | 0
How do I create a geometry with a spline as an edge?
I find it easiest to create complex geometries in a CAD program, export the shape to an stl file, and then import the stl using ...
3 days ago | 1
Index in position 2 exceeds array bounds. Index must not exceed 27.
Somewhere in your code, you have a matrix of nx27, but in your code, you are trying to access a column > 27. a=rand(3,27); % W...
3 days ago | 0
How do I add a column to an existing matrix?
Use [] to concatenate your result to your existing variable. You'll need to force your for loop to create a column vector instea...
3 days ago | 0
Get all unique combinations of 2 columns from a table
I would look into using the perms function, along with the unique and diff functions.
3 days ago | 0
How do I transform this format 202007011030 (2020 07 01 10:30) into a readabel format?
I think you would first need to read in the dates as strings, and then use datetime to convert them to datetimes. It seems when ...
3 days ago | 0
How to extract all the data for a fixed year
Load your data with readtable, with the dates imported as datetimes. Then you can use the isbetween function to identify the row...
3 days ago | 0
Calling function from different m-file
Call it by name. The file must be either in your current folder, or in a folder that has been added to your MATLAB path. The ca...
4 days ago | 0
Error using odearguments and Error in ode45
As an initial guess, I wonder if app.y2 and app.y1 have not yet been assigned values. Currently, most of your variables will onl...
4 days ago | 1
Creating a new function in App Designer places the new function inside of another function
It shouldn't be doing this. Please try restarting MATLAB. If the issue returns, please contact support.
4 days ago | 0
How can I change scaling of my graph depending on the output value?
The issue is that, by setting your XTicks manually, you have changed the XTickMode to manual instead of Auto. Therefore, your ti...
5 days ago | 0
| accepted
Y data addition on scatter plot
Use square brackets to define vectors, not curly braces. You might find MATLAB Onramp helpful, especially chapters 2, 4 & 9. Als...
5 days ago | 1
Missing value for predict in Classification Learner App
I was able to train using trainingData and test using testingData in R2021a without getting any errors. Can you provide more ...
5 days ago | 0
| accepted
Hi, Please help me convert these mathematical calculations into matlab code
If you spend about an hour of time in MATLAB Onramp (first 8 chapters), you could perform these calculations yourself.
5 days ago | 0
Binning 2 columns and summing 3rd
I would put your data into a table, then use groupsummary to bin and sum the data as you describe. You will find the Access Data...
5 days ago | 0
| accepted
How to filter out the noise to see the general trend
I might suggest using the Smooth noise data Live Task. This will allow you to interactively filter your data. Once you have a re...
5 days ago | 0
Adapt size of vector with interp1
I don't think using random number matrices creates a meaningful example here. Consider this example from the interp1 documentati...
5 days ago | 0
importGeometry pde not closed volume H I Beam Partial Differential Equation Toolbox
A quick check with an STL checker (Materialize MiniMagics) found 16 bad edges, which prevents the STL from being 3D printed (wha...
6 days ago | 0
| accepted
create a new column of data showing (n+1)-n of old column
This is what the diff function does. If X is a vector of length m, then Y = diff(X) returns a vector of length m-1. The element...
6 days ago | 0
| accepted
How to sum elements of matrix in certain condition?
A = [1.0999 -1.0999 -2.0590 0 -1.0999 0 0; 0 0 0.1168 -0.1168 0 -1.099...
7 days ago | 0
| accepted
xlswrite inserting characters to excel formula help
I think the issue is that QFS is not a recognized Excel formula, so Excel is assuming you are using a named table reference (I t...
7 days ago | 0
| accepted
