computing vectors with string and numbers (easy question)

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Hi evreyone,
I have a vector of names(str vector) and i would like to associate a number to each name
For example evreytime that the name 'Andrea' came up in the first vectror in the second one it gives me back the number 3.
Thank you for your time!
  2 comentarios
Stephen23
Stephen23 el 25 de Mzo. de 2021
"I have a vector of 12 names(str vector) and i would like to associate a number to each name (so from 1:12)."
That just sounds like the indices.
Andrea Miceli
Andrea Miceli el 25 de Mzo. de 2021
I modifed the question, now it should be clearer.

Iniciar sesión para comentar.

Respuesta aceptada

Paul Hoffrichter
Paul Hoffrichter el 26 de Mzo. de 2021
Editada: Paul Hoffrichter el 26 de Mzo. de 2021
Here is code that keeps the indexing scheme based upon the order in which the names occur in your vector of strings.
>> S = ["Howard" "Howard" "joe" "april" "andrea" "joe" "andrea" "Howard"]
S =
1×8 string array
"Howard" "Howard" "joe" "april" "andrea" "joe" "andrea" "Howard"
>> SUniq = unique(S, 'stable')
SUniq =
1×4 string array
"Howard" "joe" "april" "andrea"
>> [~, Locb] = ismember(S, SUniq)
Locb =
1 1 2 3 4 2 4 1

Más respuestas (1)

Paul Hoffrichter
Paul Hoffrichter el 25 de Mzo. de 2021
Editada: Paul Hoffrichter el 25 de Mzo. de 2021
>> S = ["joe" "april" "andrea" "joe" "andrea"]
S =
1×5 string array
"joe" "april" "andrea" "joe" "andrea"
>> SU = unique(S)
SU =
1×3 string array
"andrea" "april" "joe"
>> [~,Locb] = ismember(S, SU)
Locb =
3 2 1 3 1
Every time "joe" came up in S, it shows up as a 3 in Locb.
Every time "andrea" came up in S, it shows up as a 1 in Locb.
Every time "april" came up in S (only 1 time), it shows up as a 2 in Locb.

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