How to convert first cell value into zero

Hello

I have a array of numbers but the first cell is always a string like below. Is there way that I put ''0" instead of "theta\phi[rad]"? Then, I can do analysis :)

theta\phi[rad] 0 0.01 0.02

0 -0.15 -0.17 -0.14

0.2 0.19 -0.13 -0.11

Answer 1

[madhan ravi]

 cell_array(cellfun(@isstring, cell_array)) = {0}

[Masoud Taleb]

Thanks for the reponse. But it gives error! Should I give a value for cell_array?

Unrecognized function or variable 'cell_array'.

Error in Untitled (line 9)

cell_array(cellfun(@isstring, cell_array)) = {0}

[madhan ravi]

Lol , cell_array is your values contained in a cell. It was just for illustration purposes.

If you just want the first cell to turn to zero. Then:

 cell_array{1} = 0

[Masoud Taleb]

Unfortunately, this one does not work as well. It removes whole line!

[madhan ravi]

What??! Upload your cell data as .mat file.

>> cell_array

cell_array =

  3×4 cell array

    {["theta\phi[rad]"]}    {[      0]}    {[ 0.0100]}    {[ 0.0200]}
    {[               0]}    {[-0.1500]}    {[-0.1700]}    {[-0.1400]}
    {[          0.2000]}    {[ 0.1900]}    {[-0.1300]}    {[-0.1100]}

>>  cell_array{1} = 0

cell_array =

  3×4 cell array

    {[     0]}    {[      0]}    {[ 0.0100]}    {[ 0.0200]}
    {[     0]}    {[-0.1500]}    {[-0.1700]}    {[-0.1400]}
    {[0.2000]}    {[ 0.1900]}    {[-0.1300]}    {[-0.1100]}

>> 

I have no idea about what you're talking about.

[Masoud Taleb]

OK, I do not know why your solution did not work for me but following one fixed the problem:

 id = find(A{1}==',');
    A{1}(1:id(1)-1) = '0';

[madhan ravi]

Obviously, the example you showed in your code and your last comment don’t contain the same data.

[Masoud Taleb]

I tried to simplify the example as my data file and main codes are very big and complicated to be uploaded. Meanwhile, it is possible that something was interfering it. Anyway, thanks for your reply and help :)