how to convert table to matrix?

for minimization process Boolean function by using binary decision diagram.

Answer 1

[Walter Roberson]

table2array() . Or, if the table is all numeric, you can give the table name and then {:, :} such as

mytable{:,:}

[satya deep]

I want the table to matrix sir.

[Walter Roberson]

The code I posted does that. Table objects are always 2 dimensional in MATLAB and for two dimensions the terms array and matrix are the same thing.

Answer 2

[FAS]

Suppose your table is X.

X = X{:,:}

[JoshT_student]

Best answer.

[Walter Roberson]

Same as the second solution that I had posted 8 months earlier...

[Jacob Conrad]

dont be a jerk walter

Answer 3

[MathWorks Support Team]

To convert a table to a matrix, use the “table2array” function. (A matrix is a 2-D array.)

As an alternative, you can convert a table to an array by using the syntax “T{:,:}”, where “T” is the table. This syntax is the equivalent of “table2array”.

All variables in the table must have sizes and data types that allow them to be horizontally concatenated. For example, if all variables in “T” are numeric, then “table2array” returns a numeric array.

[Arsalan Aftab Sayed]

I tried both table2array and “T{:,:}” but it changes the values inside the table from 0.7 to 1. Is there a way I can keep the original values, I tried using double datatype but it doesn't work

[Walter Roberson]

table2array() converting 0.7 to 1 could happen if the table is mixed data type including at least one integer data type such as uint8 . Please check

unique( varfun(@class, T, 'outputformat', 'cell') )

Answer 4

[Sulaymon Eshkabilov]

Another alternative to convert table to matrix is to use a syntax: M=T.Var, e.g.

T = table(magic(5))

T = 5×1 table
               Var1           
    __________________________

    17    24     1     8    15
    23     5     7    14    16
     4     6    13    20    22
    10    12    19    21     3
    11    18    25     2     9

M=T.Var1

M = 5×5

17 24 1 8 15 23 5 7 14 16 4 6 13 20 22 10 12 19 21 3 11 18 25 2 9

[Walter Roberson]

This depends upon there being only a single variable in the table. That is possible, but not the most common arrangement.

[Sulaymon Eshkabilov]

Yes, it works for multiple variables as well, but it becomes painstakingly heavy for such cases, e.g.:

T = array2table(magic(5), 'VariableNames', {'Var1','Var2','Var3','Var4','Var5'})

T = 5×5 table
    Var1    Var2    Var3    Var4    Var5
    ____    ____    ____    ____    ____

     17      24       1       8      15 
     23       5       7      14      16 
      4       6      13      20      22 
     10      12      19      21       3 
     11      18      25       2       9 

M = [T.Var1, T.Var2, T.Var3, T.Var4, T.Var5]

M = 5×5

17 24 1 8 15 23 5 7 14 16 4 6 13 20 22 10 12 19 21 3 11 18 25 2 9

[Walter Roberson]

At that point, table2array() or using {:,:} indexing becomes a lot more convenient.

[Sulaymon Eshkabilov]

Yes, indeed.

[David Alejandro Ramirez Cajigas]

What can I do if I have N var, with random names, inside a table that imports from excel, this table can vary.

that is, the method of putting T. "name var" is not possible if I have N quantity of varials with N different names

[Walter Roberson]

@David Alejandro Ramirez Cajigas

You can use variable indexes if the indexes are constant.

If the variable order is not constant, then you can take T.Properties.VariableNames and extract whatever subset of those you want and sort them in whatever you want. Then you can loop doing dynamic field names.

Example, selecting variables that start with "run"

names = T.Properties.VariableNames;
runvars = sort(names(startsWith(names, 'run')));
nrun = length(runvars);
for varidx = 1 : nrun
    thisvarname = runvars{varidx};
    thiscontent = T.(thisvarname);
    stuff here
end

Answer 5

[Sulaymon Eshkabilov]

T_mat=table2array(T);