extract a number from 1*1 cell

I have

tbl2 = 1*1 cell array 
{[1.29]}

Name      Size            Bytes  Class    Attributes

  tbl2      1x1               112  cell 
  
  

How can one extract a double from this cell array?

Answer 1

[Image Analyst]

value = tbl{1} % Extract 1.29 from the cell

I think you should really read the FAQ so you get a good intuitive feel for how to use cell arrays and when to use braces, brackets, and parentheses:

https://matlab.fandom.com/wiki/FAQ#What_is_a_cell_array.3F

[Stephen23]

Also: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html

Answer 2

[Sibi]

cell2mat(tbl2)

[Stephen23]

Basic cell array indexing (as Image Analyst showed) is the simpler, efficient, correct approach. Using CELL2MAT is unnecessarily slow and complex for this trivial task.