Delimiter problems with =

Good afternoon,

I'm using the following function:

filename=fullfile('ENTRADA.txt');
fileID=fopen(filename);
C=textscan(fileID,'%s %s','Delimiter','=','MultipleDelimsAsOne',1);  

In order to get a 1x2 cell array (one with the name of the data and the other one with the corresponding data). All the names and the data are separated by "=" and that's why I put it as a Delimiter. The problem is that one of the data is "ZR[1].mat.comment=ISO 6336-5 Figure 9/10 (MQ), Core hardness >=25HRC Jominy J=12mm<HRC28". I would only want to make a separation after the first "=" but MATLAB makes it also for the second and the third "=". How could I fix it?

Thanks in advance!

[Stephen23]

@Sergio Vez: please upload a sample file by clicking the paperclip button.

Remember to also fclose the file.

[Sergio Vez]

Here you have it. Thanks!

Answer 1

[Stephen23]

opt = {'Delimiter','='};
fmt = '%s%[^\n]';
[fid,msg] = fopen('ENTRADA.txt','rt');
assert(fid>=3,msg)
C = textscan(fid,fmt,opt{:});
fclose(fid);

Giving

>> C
C = 
    {50x1 cell}    {50x1 cell}
>> C{1}{32}
ans =
ZR[0].mat.comment
>> C{2}{32}
ans =
ISO 6336-5 Figure 9/10 (MQ), Core hardness >=25HRC Jominy J=12mm<HRC28¶

Every line (except the first) seems to end with a pilcrow sign:

https://en.wiktionary.org/wiki/%C2%B6

Note that you might find the CollectOutput option useful.

[Sergio Vez]

Thanks you so much for your perfect and quick answer!!

[Sergio Vez]

One more question.

Once I textscanned the ".txt" and got a (1x2) cell with each of then a 4956x1 cell, I made the modifications I needed and now I want to join them again and save it into a ".txt" again. So:

• I need to include the "=" again between both cells
• I need to save it into a ".txt"

How can I do it?

Big thanks in advance again

Sergio

[Stephen23]

Something like this should get you started:

tmp = [C{:}].';
[fid,msg] = fopen('new.txt','wt');
assert(fid>=3,msg)
fprintf(fid,'%s=%s\n',tmp{:});
fclose(fid);

[Sergio Vez]

I tried that but I got this error ("Brace indexing is not supported for variables of this type. Error in Lectura_archivo (line 41) fprintf(fileID,'%s=%s\n',tmp{:});")

I send you the file. I belive the mistakes comes from here:

• My textscan goes to a variable called "c_aux". (1x1 cell).
• Due to my needs I need to get separetely both columns so I extract "c" from "c_aux" as C=C_aux{1}; and then the 2 columns from C to Nombres = C(:,1); and Valores = C(:,2);
• After operating I put together again both columns as C=[Nombres Valores]; and I tried to fprint that.
• The problem is that C is a 4956x2 cell and not 1x1 cell like "c_aux".

How could I fix it?

Thanks

[Stephen23]

"How could I fix it?"

tmp needs to be a 2xN cell array, where:

• row 1 contains the 1st column
• row 2 contains the 2nd column

Probably something like this would work:

tmp = [Nombres(:),Valores(:)].';

[Sergio Vez]

Perfect! I got it. You're such an expert