This has the same restriction, all the cell contents must have the same number of characters or the command will error.If a and b are cell arrays, then you concatenate them in the same way you concatenate other arrays: using : > a= is a cell array containing a double array. So as pointed at, if one of your cell contained Foo24 then the reshape command would error.Įdit: Or as Chris Luengo kindly mentionned in comment, a simpler command to get exactly the same result: > cell2mat(FooCellArray.') Mainly because they are not as flexible as strings, each line has to have the same number of elements. 1 when the elements of string are letters of the alphabet, and logical false i.e. Syntax: isletter(‘string’) Here, isletter(‘string’) is used to return an array the same size as the specified string that contains logical true i.e. There are two ways to refer to the elements of a cell array. Output: Using isletter() The isletter() function is used to find the array of elements that are letters of the alphabet. Cell arrays commonly contain pieces of text, combinations of text and numbers from spreadsheets or text files, or numeric arrays of different sizes. So switch from parentheses to braces and that should fix it, unless your 1x1 or whatever is a cell or cell array itself rather than a double or. A cell array is a data type with indexed data containers called cells. A cell2mat (C) converts a cell array into an ordinary array. Itll extract the first element for a vector or the. Look at what MATLAB is telling us about the content of C: the first cell contains a numeric vector, the second cell contains a scalar cell array. Use an anonymous function to extract out the first element over each cell array: out cellfun ( (x) x (1), C) The benefit of the above approach is that it doesnt matter if each cell is a vector or matrix. you are putting a scalar cell array (that you define on the RHS) inside another cell array (on the LHS), thus giving you nested cell arrays. This result type is a char array, which are ok when they are simple vector but they get quite unwieldy once they are in 2D. The braces mean to take the CONTENTS of the cell, which is some kind of numerical array (uint8, double, whatever), Parentheses mean to take that CELL ITSELF from the array, and that will be a cell. If every cell does not have the same amount of elements, one way is to use cellfun. If you MATLAB version is older AND if all the strings in the cell array have the same length, you could convert your cell array into a 2D character array: > reshape(cell2mat(FooCellArray),4,).'įor this one, transposition wouldn't really make sense. Note the terminology of the result type, it is a string array. You can transpose it if you want it as a column instead of line vector. The benefit of this method is that it will work even if the strings contained in your cell array are not all of the same length. You can directly use the function convertCharsToStrings: > convertCharsToStrings(FooCellArray) It would be much faster than importing in a loop. Extract data from a Cell Array using a vector and converting into an array. Extract specific values from cell based on array in MATLAB. idx find (cellfun (isempty,matrix),1) idx 2 4 this is the result I need to get. I have tried this way but there is something to improve. With a smaller starting example: FooCellArray = Answers (1) Vilm Frynta on 1 Link Ran in: After your loop ends, you can simply assign all the numbers into a column of a struct. CELL2MAT gets all the data from a cell array that consists of numeric data only, into a numeric array. I need to create a column vector that returns the non-empty row indices.
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