Is there a way to create and preallocate for tables with a large number of variables (can all be of same type e.g. double) without having to specify each variable independently?

I want to create tables with a large number of variables (i.e. many columns of data all of type double) so using for example

sz =[1000,1000]; vartype = {'double','double',....,'double'}; T = table{'Size',sz,'VariableTypes',vartype};

is not reasonable. I assume there's an easier way to do this (i.e. without having to write 'double' thousands of times), but haven't been able to find it. Any suggestions would be appreciated.

Answer 1

[Matt J]

sz =[1000,1000]; 
vartype = repmat({'double'},1,sz(2)) ; 

T = table('Size',sz,'VariableTypes',vartype);

Answer 2

[Matt J]

Another way,

T=array2table(rand(sz));