![]() ![]() If this again hits the limit, having the step = 1 and yet pointing right "behind" the format-specific limit, your sheet-under-review contains data until its last row ( finishing on the format-specific "edge" ).īut once the target cell is empty/NaN, stop the forward-stepping phase and start a standard back-stepping phase by halving the interval between a found/failed ( empty ) cell aFirstEmptyROW = aRowToTEST and the last known cell at aLastNonEmptyROW, that contained number.Īgain, if a cell under test contained a fair value, move the aLastNonEmptyROW-boundary to aRowToTEST value, if not, move the same way aFirstEmptyROW-boundary.įinally set aBackSteppingSTEP = ( aFirstEmptyROW - aLastNonEmptyROW )/2 aRowToTEST = aFirstEmptyROW - aBackSteppingSTEP. In case aRowToTEST points "behind" the format-specific maximum row number, set aRowToStartFROM = aLastNonEmptyROW and reset the forward-stepping distance aRowNumberDistanceToTEST = 1 to continue forward-stepping iterations with a doubling-step stepping. The "blind" black-box approach would be to first test the boundary of the contiguous area, where your data is present - use any feasible iterator, first forward-stepping by doubling a blind-test step-distance of a tested cell alike aRowToTEST = ( aRowToStartFROM + aRowNumberDistanceToTEST ) and in case the tested cell contains a number, set aLastNonEmptyROW = aRowToTEST double the aRowNumberDistanceToTEST and repeat. You can import data from any worksheet in the file, and from any. Still, how to approach the task efficiently and future-proof? Use xlsread to import a matrix from an Excel spreadsheet file into the MATLAB workspace. ![]() ![]() This example shows how to import spreadsheet data programmatically using both functions. spreadsheetDatastore Read multiple worksheets or files. To programmatically import data, use one of these functions: readtable Read a single worksheet. This syntax is supported only on Windows systems with Excel software. To interactively select data, click Import Data on the Home tab, in the Variable section. Select the worksheet, drag and drop the mouse over the range you want, The maximum one can use under direct MATLAB support is to: _ = xlsread(filename,-1) opens an Excel window to interactively select data. Fundamentals of MATLAB MATLAB Workspace MATLAB Variables. In a normal case I use the 'import data' app. MATLAB does not have either documented or undocumented feature for doing this directly. Matlab: read multiple columns from an excel spreadsheet by using xlsread Ask Question Asked 1 year, 1 month ago Modified 1 year, 1 month ago Viewed 276 times 0 I have an Excel sheet with 300 columns, from which I just need several ranges. ![]()
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