Community Profile

photo

per isakson


KTH

2,111 total contributions since 2010

Contact

per isakson's Badges

  • Revival Level 3
  • Ace
  • 36 Month Streak
  • Leader
  • Speed Demon
  • Promoter
  • Personal Best Downloads Level 2
  • Editor's Pick
  • First Review
  • 5-Star Galaxy Level 4
  • First Submission
  • Thankful Level 3
  • Knowledgeable Level 4
  • First Answer
  • Commenter

View all

Contributions in
View by

Answered
How to find strings in a very large array of data?
"random strings like 'zgdf'" If that means letters of the US alphabet, this code is rather fast. %% chr = fileread('cssm.txt'...

11 hours ago | 0

Answered
How do I invoke my property set method?
Doc says: You cannot call property access methods directly. MATLAB calls these methods when you access property values. "objX....

1 day ago | 0

Answered
Invalid file identifier. Use fopen to generate a valid file identifier.
Try filespec = fullfile( "/Users/kira/desktop/PHYS4115Tables/'att'", filename ); fileID = fopen(filespec, 'rt'); assert(file...

4 days ago | 0

Answered
CSV file imported with readmatrix is misreading the data in the CSV file
"The resulting array consists of 5 digit numbers with a decimal point after the first number." I assume that you describe how ...

5 days ago | 0

Answered
Compare two arrays (intersection) and create new array with output columns, but with repetitions
Your way of defining A, B and C makes me wonder whether you intended to define matrices, not vectors. Anyhow, this is a differe...

5 days ago | 0

| accepted

Answered
Working With Matlab Tables
"I remember from somewhere" With Matlab that doesn't work for me. I need to consult the documentation more often than not. This...

5 days ago | 0

Answered
Calling .inp file into MATLAB
" .inp file created in Abaqus" is that a text file like the sample below? If so, Matlab itself together with its toolboxes don'...

8 days ago | 0

Answered
Launching a thread that effectively pushes a button in your GUI periodically
Create a timer ( see timer class Create object to schedule execution of MATLAB commands) that periodically invokes the Update c...

11 days ago | 1

| accepted

Answered
Creating random vector with 10 different lengths
Documentation on randi says: X = randi(imax,n) returns an n-by-n matrix of pseudorandom integers drawn from the discrete unifor...

12 days ago | 1

Answered
[ERROR] Index exceeds array dimensions. Index value 0 exceeds valid range [1-1] of array Coeff.p01.
I guess that this term causes the error Coeff.p01(torque*Coeff.b/Coeff.T_max) and that's because torque*Coeff.b/Coeff.T_max ev...

12 days ago | 0

Answered
How do I use regexp to extract text between numbers
"So the end product I want will be a 16x1 string that looks like" I'm not sure exactly how understand your requirement. The pr...

13 days ago | 1

Answered
find a string using regular expression using a special condition
Assumptions regarding the search terms case is significant. ( "liquid, X" the lower case "l" is a typo.) space is significant...

13 days ago | 0

| accepted

Answered
Strange error using readtable
I've downloaded brtyrpre.txt from your comments and copy&pasted brtyr_error_pre.txt from your question ("Here is the one the sc...

14 days ago | 0

| accepted

Answered
Comparing Matrices in a Struct
Try this S(1).model_data = rand( 4, 10 ); S(2).model_data = rand( 2, 10 ); S(3).model_data = rand( 3, 11 ); Out = cssm_( S ...

14 days ago | 0

| accepted

Answered
Compare classes with different Properties
Try this %% Create sample data mc(20) = MyClass; [mc(1:7).a] = deal(1); [mc(8:20).a] = deal(2); %% Desired output edges =...

16 days ago | 0

| accepted

Answered
Why can't a concrete subclass use size and validator functions on abstract superclass properties?
The R2019b doc on Validate Property Values says [...] Abstract Property Validation You can define property validation for ab...

20 days ago | 0

Answered
save obj creates a large mat files, disagrees with whos
"Once I have reached the 2GB data size format v7 will no longer work." ??? Doc on save v7 says: 2^31 bytes per variable Ex...

22 days ago | 0

Answered
why does my m file not save correctly
The command save is used to store variables of the current workspace, i.e. save data. There is no simple command to save m-code...

25 days ago | 0

Answered
Why does converting a table to a struct increase memory usage by 15x??
What kind of structure do you expect? table2struct can create two kinds. struct array with one struct for each row of the tab...

25 days ago | 1

Answered
How to load text file to workspace variables?
"load to workspace as variables with string name in var and numeric value as val." There need to be a really good reason to do ...

27 days ago | 0

Answered
how to produce a logical matrix using index matrix
Try logical_matrix = false( 1, 4 ); logical_matrix( b ) = true;

30 days ago | 1

| accepted

Answered
Error using - Matrix dimensions must agree.
I get a different error. One reason for the difference in the wording is that we run different releases of Matlab(?). I run R201...

1 month ago | 0

| accepted

Answered
Varargout - How to realize function call
varargout exercise. Try something like this function varargout = test( j, k ) out1= nargin; out2 = j-k; if out2 ...

1 month ago | 0

Answered
How many times does each combination of numbers appear?
"get it to tell" depends on what the little word "it" refers to. The function randi() cannot tell that. Try this as a start %...

1 month ago | 0

| accepted

Answered
How do I save each iteration of a loop into a matrix?
Replace for i=0:n c=circshift(p, [0, i]); end by c = nans(n,1); for i=0:n c(i)=circshift(p, [0, i]); end

1 month ago | 0

Answered
Using Load in a test methods makes the test pass
Looks like a bug to me, however in programs one ought to use the functional form S = load('matlab.mat'); In that case the test...

1 month ago | 0

Answered
Trouble reading the file with strread and textscan
"Illegal use of reserved keyword "end". " Deleting some code may leave a spurious end sometimes far to the right outside the ...

1 month ago | 0

Answered
Loop for sequence of text files
See How can I process a sequence of files?

1 month ago | 0

Answered
How to perform operations depending on a value in an array
This works accourding to your expectations - I think. %% C=[10,8,34,7,7,24,11,15,10,13,13,20,17,39,6,9,5,21]; data=2200; for...

1 month ago | 0

| accepted

Answered
Change folder vs change directory
Matlab issues the message that you refer to in "Change folder is the option that sometimes matlab ask before running the script"...

1 month ago | 0

Load more