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Regular expression forward slash clarification
The slash is a basic literal. They wanted to work with roughly the same example for the three cases, and they built a pattern wh...

environ 12 ans il y a | 2

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How to read the PRE html tags and replace some white spaces
I've got to run, but here is one way (I'll come back later to discuss further if needed). *EDIT:* the first solution could no...

environ 12 ans il y a | 3

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How do I call the first number in a string?
If the text just contains letters followed by numbers, an efficient way to proceed is as follows; num = string - '0' ; f ...

environ 12 ans il y a | 3

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Read csv strings, keep or create surrounding whitespace
Here is an example that I can refine if you provide more information. It writes some keywords in upper case.. key = {'lobste...

environ 12 ans il y a | 1

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Convert cell-array to array-of-cells, for array-of-struct creation?
To = cellfun( @(cc)num2cell(cc), Fr, 'UniformOutput', false ) ; To = [To{:}] ;

environ 12 ans il y a | 1

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Convert space separated string table to cell?
>> Dec = reshape( hex2dec( regexp( reshape( Table', 1, [] ), '..\s?', ... 'match' )), 8, [] )' Dec = 162 ...

environ 12 ans il y a | 4

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How can I create another matrix with the sum of every 30 rows in a 14,400 by 11 matrix?
Here are a couple additional ways, if you need a sum for each block of 30 days (not a "moving" sum), assuming that your original...

environ 12 ans il y a | 1

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Creating a diagonal matrix which contains already defined matrix on diagonals??
Here is an example which builds a block diagonal matrix |A| based on 3x3, trivially time-dependent matrices t = 0 : 3 ; ...

environ 12 ans il y a | 1

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How can I plot the same data with two y-axes on the same plot?
You probably made a mistake, how are you calling PLOTYY? doc plotyy and look at examples, and e.g. the following which wo...

environ 12 ans il y a | 2

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Remove elements appearing sequentially in a larger text.
Here is an example using pattern matching and replacement.. % - Get and modify content. fName = 'tord_1.txt' ; content...

environ 12 ans il y a | 2

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Clear text typed with input() from the command history
It may be a bit violent but com.mathworks.mlservices.MLCommandHistoryServices.removeAll would work. And welcome back! ...

environ 12 ans il y a | 1

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Relatively complex matrix indexing question
You are correct about sparse matrices, and I had completely misunderstood your setup! So the lower triangular part is NaN, but t...

environ 12 ans il y a | 1

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How to create average of values within a grid box??
You are trying to perform what is called a <http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000w8000000.ht...

environ 12 ans il y a | 6

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How to import large textfile
Here is one way to proceed fId = fopen( 'omar_1.txt', 'r' ) ; buf = fscanf( fId, '%f', Inf ) ; fclose( fId ) ; bSize...

environ 12 ans il y a | 2

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How to pass a function handle of an anonymous function into ode45 function in matlab?
Assuming that your problem has 3 dimensions, so you have for example x0 = [10; 5; 7] ; % [x1(0), x2(0), x3(0)], or...

environ 12 ans il y a | 6

Question

Why not making accounts creation more complicated?
We've seen a *dramatic* increase of the spam that we get on the forum lately, and I am wondering if it isn't the right moment fo...

environ 12 ans il y a | 2 réponses | 12

2

réponses

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How to extract a number of diagonals of a matrix
*Sparse, SPDIAGS* - Here is a version using sparse matrices and SPDIAGS Original, dense matrix: >> N = 5 ; >> A = randi...

environ 12 ans il y a | 4

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Split along word into parts with different lengths
Here is a solution based on comments above. Yet, we will need you to answer these comments so we can refine the approach. Assumi...

environ 12 ans il y a | 3

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Find duplicate entries and average associated values
If elements from the first column are "continuous" positive integers, here is a way to go: >> data = [1 10; 2 20; 3 30; 4 40...

environ 12 ans il y a | 5

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Read specific hex data in CSV file
*NEW solution* Here is a more efficient solution; I am using a 122MB file, so you have an idea about the timing % One lin...

environ 12 ans il y a | 3

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Find elements greater than a value corresponding to the second array
loc = B > 0.875 ; % Logical index of elements of B greater than 0.875. val = A(loc) ; % Values of A at...

environ 12 ans il y a | 2

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Split one array into two while splitting each cell
Assuming that you have data = {'13008KT', '08009KT', '13009KT', '13008KT'} ; here one way to go: >> data = cat( 1, ...

environ 12 ans il y a | 2

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after fundamentals what is the next course for a physics student?
I don't have much time but I'll bring my 2 cents too, and develop two points. *A.* You have to make the distinction between t...

environ 12 ans il y a | 2

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Using textscan with mixed data type in a single field/array
If you don't need |N| and |T|, the simplest approach is probably to eliminate them before the call to TEXTSCAN: content ...

environ 12 ans il y a | 4

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Reading values from a text file and converting to array.
Here is one way to achieve what you want to do: >> content = fileread( 'myFile.txt' ) ; >> data = textscan( content, '%f (...

environ 12 ans il y a | 3

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textscan difficulties with mixed datatypes
Why do you get the CSV content as a cell array of rows? If you cannot change this, you could just merge/concatenate all these ro...

environ 12 ans il y a | 3

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Fast way to read text file of formatted data
You should/could perform this operation using a *RAM drive/disk*. There is little interest in saving temporary files on disk whe...

environ 12 ans il y a | 2

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String value and relate with number.
Here is one solution. Assuming W = ['DABCD'] ; Define values = [21, 12, 8, 7] ; % or values = [A, B,...

environ 12 ans il y a | 1

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How to present elements of a cell array?
s1n = reshape(sscanf([s1{:}],'%s%d'),3,[]) ; s2n = reshape(sscanf([s2{:}],'%s%d'),3,[]) ; [id2,id1] = find(bsxfun(@eq,s1n(3...

environ 12 ans il y a | 2

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Track changes in a cell array with strings
Here one way to proceed: [~,ia] = unique( arrayfun( @(r)[C{r,2:end}], 1:size(C,1), 'Unif', 0 )) ; C_chg = C(sort(ia),:) ...

environ 12 ans il y a | 3

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