Unable to resolve the name Error

The error I keep recieving is as follows:

Unable to resolve the name 'triangle2.X.Data'.

Error in lab3 (line 7)
tt2 = triangle2.X.Data-1;

The code I have is as follows:

load triangle2.mat
%Triangular Pulse with 2V
tt2 = triangle2.X.Data-1;
ut2 = triangle2.Y(2).Data;
yt2 = triangle2.Y(1).Data;
offset = mean(yt2(1:9000));
yt2 = yt2 - offset;

I'm not sure what is causing this issue since I have not encountered it in previous versions when I ran similar code. I added a path to the folder containing the data as well, but I still recieve the same error. Thanks for any help!

[Dyuman Joshi]

Please share the triangle2.mat file. Use the paperclip button to attach.

[Grace]

Here is the file

[Les Beckham]

That file does not contain a variable called triangle2, or X or Y, for that matter.

whos -file triangle2.mat

  Name                      Size              Bytes  Class     Attributes

  exp1_014_mat_saving1      1x1             2650104  struct              

Answer 1

[Voss]

This mat file contains one variable (called "exp1_014_mat_saving1"):

S = load('triangle2.mat')

S = struct with fields:
    exp1_014_mat_saving1: [1×1 struct]

which is a struct with fields Info, X, Y, and Description:

S.exp1_014_mat_saving1

ans = struct with fields:
           Info: [1×1 struct]
              X: [1×1 struct]
              Y: [1×2 struct]
    Description: [1×1 struct]

If you want that variable to be called "triangle2" so you can run your code without modification, you can make a new variable called "triangle2" in your code and assign it the value of "exp1_014_mat_saving1" from the mat file:

triangle2 = load('triangle2.mat').exp1_014_mat_saving1

triangle2 = struct with fields:
           Info: [1×1 struct]
              X: [1×1 struct]
              Y: [1×2 struct]
    Description: [1×1 struct]

then the rest of your code runs without error:

%Triangular Pulse with 2V
tt2 = triangle2.X.Data-1;
ut2 = triangle2.Y(2).Data;
yt2 = triangle2.Y(1).Data;
offset = mean(yt2(1:9000));
yt2 = yt2 - offset;

[Grace]

Thank you so much! I got the data from a partner, didn't realize that she renamed it after taking the data, so it had a different name.

[Voss]

You're welcome!