Delimiter problems with =

2019 10 28
1 个回答
回答已采纳
更新时间：2019 10 28
5 次查看（30 天）

0 个投票

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!

2 个评论
显示 无 隐藏 无

Stephen23
Stephen23 2019-10-28
@Sergio Vez: please upload a sample file by clicking the paperclip button.
Remember to also fclose the file.
Sergio Vez
Sergio Vez 2019-10-28
Here you have it. Thanks!

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Stephen23
Stephen23 2019-10-28
编辑：Stephen23 2019-10-28

1 个投票

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.

6 个评论
显示 4更早的评论 隐藏 4更早的评论

Sergio Vez
Sergio Vez 2019-10-28
Thanks you so much for your perfect and quick answer!!
Sergio Vez
Sergio Vez 2019-10-28
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
Stephen23 2019-10-28
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
Sergio Vez 2019-10-28
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
Stephen23 2019-10-28
编辑：Stephen23 2019-10-28
"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
Sergio Vez 2019-10-28
Perfect! I got it. You're such an expert

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Text Data Preparation 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by