Why am I getting this error when trying to show a cell of an array? "Brace indexing is not supported for variables of this type"
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Rebeca Lopez
el 25 de Feb. de 2021
Comentada: Rebeca Lopez
el 26 de Feb. de 2021
Hi, I'm trying to make a code for reading an array (dat) from a text file and changing each cell per column and per row according to a rule. But when I try to use braces to show a specific cell, for example:
hi=dat{5,3}
It shows this error: "Brace indexing is not supported for variables of this type".
So I can't even start making loops changing the values of the cells because it's not even allowing me to use braces for a specific cell.
Here's the code I used for reading the text and converting to an array:
rap = yourfolder; %'path of folder where my file is located'
fnm = fullfile(rap,'sh_day.txt');
fmt = repmat('%f',1,301);
opt = {'HeaderLines',3, 'CollectOutput',true,'Delimiter',','};
[fid,msg] = fopen(fnm,'rt');
assert(fid>0,msg)
dat = textscan(fid, fmt, opt{:});
fclose(fid);
dat = dat{1};
Thanks!
2 comentarios
Simon Allosserie
el 26 de Feb. de 2021
Editada: Simon Allosserie
el 26 de Feb. de 2021
Is that value on location (5,3) in dat actually a cell? You use {} for selecting cells. If you select the cell content, you need to use ().
Respuesta aceptada
Stephen23
el 26 de Feb. de 2021
dat is numeric, so you need to use parentheses:
hi = dat(5,3)
I already explained this in more detail in my response to your comment:
0 comentarios
Más respuestas (1)
Walter Roberson
el 26 de Feb. de 2021
Editada: Walter Roberson
el 26 de Feb. de 2021
Your file has no data (after at most 3 header lines). The textscan result is empty.
0 comentarios
Ver también
Categorías
Más información sobre Large Files and Big Data en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!