Borrar filtros
Borrar filtros

How can I classify a variable if it is a string or a number?

1 visualización (últimos 30 días)
I want to display if the costumer has introduced a number or a string when is requested.

Respuesta aceptada

Benjamin Avants
Benjamin Avants el 13 de Mayo de 2014
Use the class() function.
str = 'Test';
num = 1;
Of course, if the entry was prompted with inputdlg, all responses will be returned as strings. In that case, you'll need to try and convert the string to a number and examine the result. If str2num or str2double can't convert a string, they return NaN.
  2 comentarios
Walter Roberson
Walter Roberson el 13 de Mayo de 2014
str2num() would convert 'pi' to a number...
Benjamin Avants
Benjamin Avants el 13 de Mayo de 2014
True... so you may want to check for specific cases like that if they are likely to happen. Thankfully, there aren't that many.

Iniciar sesión para comentar.

Más respuestas (0)


Más información sobre Characters and Strings 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!

Translated by