Borrar filtros
Borrar filtros

How to get last numerical value from column A only?

43 visualizaciones (últimos 30 días)
isamh
isamh el 13 de Mzo. de 2020
Respondida: Steven Lord el 13 de Mzo. de 2020
I have a CSV, I want to get the first and last value from column A.
I found the first value, which is: First = P(1);
i cant seem to get the last value, I tried: Last = P(end);
I get the last value from Column E instead of A

Respuesta aceptada

Fangjun Jiang
Fangjun Jiang el 13 de Mzo. de 2020
P(1,end) would be it.
  3 comentarios
isamh
isamh el 13 de Mzo. de 2020
nevermind got it, it's: P(end,1);
Fangjun Jiang
Fangjun Jiang el 13 de Mzo. de 2020
:) You got it right

Iniciar sesión para comentar.

Más respuestas (1)

Steven Lord
Steven Lord el 13 de Mzo. de 2020
When you index into an array with just one index, you're using a technique called linear indexing. This basically treats your array like it was one long vector, as described in the "Indexing with a Single Index" section on this documentation page. You want to perform subscripted indexing, as Fangjun Jiang suggested and as the "Indexing with Element Positions" section on that documentation page states. That section mentions the end keyword will will be very useful in keeping your code generalized. This avoids hard-coding in the size of a particular array, letting your code automatically handle different sized inputs without needing modification.

Categorías

Más información sobre Matrix Indexing 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