How to create a double array from a cell array

I want to convert this data into the image shown after

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

How do I do this?

[Walter Roberson]

Using randi() perhaps?

None of the values you list in the first row of that 8144x5 cell appear anywhere in the output of the table at the top, so we have no idea where you are getting the data from.

[Asim Shahzad]

@Walter Roberson the first image is just to describe what format I want my data in. I want 'n' rows of [39, 375, 530, 259] type of data.

[Siddharth Bhutiya]

Do all rows have the same number of columns in your cell array data ?

[Asim Shahzad]

@Siddharth Bhutiya yes they do.

Answer 1

[Walter Roberson]

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

imageFilename = paths;
vehicle = cell2mat(cellData);
table(paths, vehicle)

ans = 3x2 table
     paths           vehicle      
    _______    ___________________

    "path1"    1     2     3     4
    "path2"    5     6     7     8
    "path3"    9    10    11    12

If you are going to put more than one group into the vehicle area, then instead

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

imageFilename = paths;
vehicle = num2cell(cell2mat(cellData),2);
table(paths, vehicle)

ans = 3x2 table
     paths       vehicle   
    _______    ____________

    "path1"    {1×4 double}
    "path2"    {1×4 double}
    "path3"    {1×4 double}

you will not be able to get the actual numbers to display in that situation

Answer 2

[David Hill]

Why not just:

cell2mat(yourCellarray);

[Siddharth Bhutiya]

As David mentioned you can use cell2mat to convert your cell array to a double matrix and then use that multi-column double matrix as your table variable, something like this

paths = ["path1";"path2";"path3"];
cellData = {1,2,3;4,5,6;7,8,9};
dblData = cell2mat(cellData);
t = table(paths,dblData)

t =

  3×2 table

     paths       dblData  
    _______    ___________

    "path1"    1    2    3
    "path2"    4    5    6
    "path3"    7    8    9

[Asim Shahzad]

@David Hill @Siddharth Bhutiya this does not show up in the format that I have shown in my question. The first image. Your answer gives me this:

What I want is this (visual representation, not the actual data - the second column):

[Walter Roberson]

Your input is an 8144 x 5 cell, with 5th column not shown.

Your required output is a table with file names in the first column. The second column has a mix of 2 x 4 and 1 x 4 numeric arrays.

You have not given us any indication of where the file names are coming from for the first column, and there is nothing in the first four columns of the cells in your input that would give us any grouping information to put multiple entries together for the second column of the table.

Furthermore, not even one of the values in the 8144 x 5 cells that you show, appears in the second column of the table, so we are not able to deduce any pattern.

There is only one possible conclusion:

You. Should. Just. Create. Random. Output.

[Asim Shahzad]

@Walter Roberson Ok let me simplify it further.

My input data is

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

My output should look like this

How do I achieve this?

[Walter Roberson]

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

imageFilename = paths;
vehicle = cell2mat(cellData);
table(paths, vehicle)

ans = 3x2 table
     paths           vehicle      
    _______    ___________________

    "path1"    1     2     3     4
    "path2"    5     6     7     8
    "path3"    9    10    11    12

If you are going to put more than one group into the vehicle area, then instead

paths = ["path1";"path2";"path3"];
cellData = {1,2,3,4;5,6,7,8;9,10,11,12};

imageFilename = paths;
vehicle = num2cell(cell2mat(cellData),2);
table(paths, vehicle)

ans = 3x2 table
     paths       vehicle   
    _______    ____________

    "path1"    {1×4 double}
    "path2"    {1×4 double}
    "path3"    {1×4 double}

you will not be able to get the actual numbers to display in that situation

[Asim Shahzad]

@Walter Roberson thanks for the help.

'you will not be able to get the actual numbers to display in that situation'

How is it being done in the image I shared then? Just curious.

[Walter Roberson]

Perhaps Variable Browser shows them. The command window will not.

[Asim Shahzad]

@Walter Roberson just checked. It does. Could you please post your comment as an answer so I can accept it? I'll edit my question with the updated images.