per isakson
Last seen: Today
KTH
2.408 total contributions since 2010per isakson's Badges
Answer 10 questions that were unanswered for more than 30 days
Awarded to per isakson on 12 Jun 2019
Contribute at least one answer each month for 36 consecutive months
Awarded to per isakson on 20 Jul 2017
Solve a problem with a best solution
Awarded to per isakson on 05 Mar 2017
Be the first to solve a problem
Awarded to per isakson on 17 May 2012
Like a problem or solution
Awarded to per isakson on 20 Apr 2012
Your submissions were downloaded 30 or more times in a month
Awarded to per isakson on 01 Nov 2019
Your submission is selected as "Pick of The Week"
Awarded to per isakson on 09 Oct 2019
Publish your first comment or rating
Awarded to per isakson on 09 Oct 2019
Your submissions received 10 five star ratings
Awarded to per isakson on 09 Oct 2019
Publish your first submission
Awarded to per isakson on 09 Oct 2019
Accept 20 answers given by other contributors
Awarded to per isakson on 20 Jul 2017
100 of your answers have been accepted
Awarded to per isakson on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to per isakson on 20 Jul 2017
Comment on a problem or solution
Awarded to per isakson on 15 Apr 2012
how to simulate different investments
Based on your question, I've made a small object oriented demo. You don't prescribe how many shares an investor will trade in o...
etwa eine Stunde ago | 0
read each line a text file using Matlab function
"does Matlab have any other functions for reading a text" Yes many, see Text Files. I would read entire lines with textscan() ...
etwa 20 Stunden ago | 0
can anyone help me prepare the code
Problems with your script The long lines make the code hard to read. Numerous statement separators are missing I added line ...
ein Tag ago | 0
is it possible to create array of strings or char from struct of cell arrays
There are character arrays (See Text and Characters) A(1).name='one'; A(1).val=1; A(2).name='two'; A(2).val=2; {A.name} [A.na...
ein Tag ago | 0
| accepted
Changing elements in a MxN matrix
Does this help? %% matrix = magic(10); matrix = triu( matrix,-4 ); matrix = tril( matrix, 4 ) %% This is better, it only ...
2 Tage ago | 0
| accepted
Extracting values out of a cell array with tables
This script puts all the numerical data into a row vector (column-wise). You didn't say anything about order. %% load('CA.mat'...
2 Tage ago | 1
| accepted
Issues with plotting/best method
I added 'd' to all your plot-commands plot(b0(1,1), z(1,1), 'd' ) keyboard hold on plot(t0(1,1), z(2,1), 'd' ) plot(b1(1,1)...
4 Tage ago | 0
Organizing images in datastore and accessing them with parameters
The statement imds = imageDatastore(location) creates an instance of the class, ImageDatastore. My first idea was to subclas...
7 Tage ago | 0
Brace indexing is not supported for variables of this type.
"How do I call the sort_nat function to sort folders?" Examples Find sorted file names >> sad = dir('d:\m\cssm\*.txt'); >> ...
10 Tage ago | 0
understanding "<" operator line
Consider the two lines midCirc = X.^2+Y.^2 < (1/n)^2; NmidCirc = not(midCirc); The first line assigns a logical value (true/f...
11 Tage ago | 0
Searching for a matched string within nested cell and delivering the index
Assume there is ONE cell contaning 'TOTAL' Try %% ix = find( cellfun( @(cac) strcmp(cac{1},'TOTAL'), values ) ); num = value...
14 Tage ago | 0
| accepted
Take average of multiple matrices
Try this %% load('data.mat') num = cat( 3, phi_BFD_v_sum{:} ); avg = mean( num, 3 ); peek >> avg avg = 0 ...
14 Tage ago | 1
Pre-allocating cell containers
"I have pre-allocated memory". After pre-allocating memory for a variable you must not change its size. If you do, the effect o...
14 Tage ago | 0
how to save the outputs obtained by a for loop repeated n times
tot is overwritten in each iteration of the for-loop Replace tot = (Tin{idx(:,i),i+1:i+3}); by tot(:,i) = (Tin{idx(:,i),i+...
17 Tage ago | 0
| accepted
Kill a system process if it takes too long
I did this long time ago and have forgotten the details. And I haven't access to my code now. Thus from the top of my head. Ther...
20 Tage ago | 1
Counting in one column that is conditional on another column
Does this do what you look for? %% limits = { [0;4], [4;5], [5;6], [6;7], [7;inf] }; %% some simple test data trials = {[ ...
20 Tage ago | 0
| accepted
How to change data in a cell array of doubles?
??? "doing time = time - 1" doesn't "fix the time so that it starts from 0" Try this >> load('trials.mat') >> cac = cellf...
21 Tage ago | 1
| accepted
Fprintf not inserting new line correctly with /n
The documentation of fprinf says fprintf(formatSpec,A1,...,An) applies the formatSpec to all elements of arrays A1,...An i...
22 Tage ago | 1
| accepted
convert string to equation
Or a smelling solution if you don't have the symbolic toolbox >> x=3; >> v = eval('(5*x^2)') v = 45 >> Create an ano...
22 Tage ago | 0
Find the value at exact location in a text file
An alternative construct based on ismembertol(). I believe it's faster. %% fid = fopen( 'cssm.txt', 'rt' ); % cssm.txt conta...
22 Tage ago | 0
MATLAB not displaying answer correctly in command window
Look up the help on format specifier of fprintf(). Next replace the spec, %s, in your %%Display section by %+7.2f The tripl...
23 Tage ago | 0
| accepted
Convert imported data from table to array
See table2array - Convert table to homogeneous array
23 Tage ago | 0
| accepted
Help placing user input into an element in a row vector
Look up for in the documentation ... replace for i = 1 < score by for i = 1 : data
24 Tage ago | 0
Putting three separate arrays into one new array
Try NewArray = [array1, array2, array3]; or NewArray = horzcat(array1, array2, array3); instead
26 Tage ago | 1
| accepted
2 columns put together
One way >> c = [x,y]; % concatenate x and y horisontally >> c(2,:) % second row ans = 0.585 0.4926 >>...
27 Tage ago | 0
How to extract certain values from an array
First see Array Indexing and Find Array Elements That Meet a Condition. Then try >> x=[8,5,5,5,9,4,3,2,9,10]; >> new = x(x<7) ...
27 Tage ago | 0
| accepted
How can I change an element in a matrix with the median of itself and its surrounding elements.
"but I do not know how to specify the median function to take the localized 3x3 matrix of a larger array" Combine these two e...
etwa ein Monat ago | 0
How do you import specific rows of numeric data (without text) for the file I have attached?
Maybe not the most rubust way, but it does the job. (The numerical blocks must be followed by non-numerical text.) %% ffs = '1...
etwa 2 Monate ago | 0
| accepted
How to Speedup conditional vector elements replacement?
There is a Matlab function, repelem, that does it. >> repelem( b, a ) ans = Columns 1 through 13 1 6 6 6 ...
etwa 2 Monate ago | 0
| accepted
Create all combination of strings
See: perms, All possible permutations In response to comment Does the function, cssm(), do what you ask for? >> all_permuta...
etwa 2 Monate ago | 0
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)