How to access data in structures?

109 次查看（过去 30 天）
Brett Baxter
Brett Baxter 2020-10-17
评论： Stephen23 2020-10-17
I'm currently learning how to use structures in MATLAB and I'm finding it a little more confusing than cells and other regular arrays. I'm confused on how to call data stored in specific fields of a structure. I understand the format is "nameofstructure"."nameoffield", but I'm struggling with how to get the data I need from the structure without knowing the name of the fields. Say I had a structure with 2 fields, how would I go about getting the infomation from either one without knowing the name of the field? I tried pulling the names of the fields in a function and using them like so
fieldnames = fieldnames(structure)
fieldInedd = fieldnames(2)
informationfromthisfield = structure.fieldIneed
But this doesn't give a field that matlab can recognize and draw data from. Could anyone help?

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2020-10-17
fieldnames = fieldnames(structure)
fieldInedd = fieldnames{2}
informationfromthisfield = structure.(fieldIneed)
Notice the () around the field name: it is important. This syntax is "dynamic field names".
This syntax of dot followed by a variable name or expression in () is also used for referencing table variables that are not valid MATLAB variable names.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Structures 的更多信息

标签

产品


版本

R2020a

Community Treasure Hunt

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

Start Hunting!

Translated by