Expected one output from a curly brace or dot indexing expression, but there were 3 results.

I want to access the vectors inside a structure and assign them independently to a variable (so each variable is a vector). However, when I try indexing the structure to obtain the first vector I get an error.

Here is what I am doing.

Test 1:

ns = data.NodeSets.Data(1) % Line 17

and I get "Expected one output from a curly brace or dot indexing expression, but there were 3 results."

Test 2:

ns = data.NodeSets.Data{1} % Line 17

and I get "Expected one output from a curly brace or dot indexing expression, but there were 3 results."

Test 3:

data.NodeSets.Data % Line 17

and I get a set of three vectors of type double but I can't assign them to any variable as I am only able to see them in the command window

[Jon]

Can you please make a very small, standalone script that we can run that demonstrates the problem. I see alot of files attached, but I'm not sure what they all do, or how to use them. I just need something that assigns your variable data.NodeSets.Data in the workspace so I can see how to work with it.

[Jacques Barsimantov]

I have included the file interface_search.m. This file makes use of the attached files "cube_mesh_c.inp" and "abaqusInpRead.m" so they must be included in the same directory to run it. Both of them are in the zip file. However, you only need to start looking from line 18 as there it is where I assign the variable data.NodeSets.Data.

[Jon]

Sorry, but that is all a bit complicated, please just save your variable, which you call "data" in the above question, in a .mat file and attach that.

save data data

[Jacques Barsimantov]

I have attached the file. Sorry for the confusion.

Answer 1

[Cris LaPierre]

You just need to explore your structure to understand what is happening. You have 3 NodeSets in your structure. The indexing you are using is trying to return the first value for each NodeSet

You need to also index the NodeSet. The code below returns the first value of the first NodeSet.

load data
ns = data.NodeSets(1).Data(1) 

ns = 3

[Jacques Barsimantov]

Thanks! This helped me solve it

[Shabnam]

how? i get the error Dot indexing is not supported for variable of this type

[Cris LaPierre]

That is a completely different scenario than the one answered here. Please create a new question.