Unrecognized Field name in struct error, even though same Fieldname clearly in struct
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I am writing a GUI, that automatically imports data from a table and sorts it into a struct with fields. I created a cell with strings "VN" (VariableNames), with data_in beeing a 401x6 table in this example.
app.VN = app.data_in.Properties.VariableNames;
% Manually outputting VN into workspace shows:
VN=app.VN
VN =
1×6 cell array
Columns 1 through 5
{'x1_1_1RadVorneR…'} {'x1_1_1RadVorneR…'} {'x2_1_1Sitzschiene'} {'x2_1_1Sitzschie…'} {'x3_1_1Sitzkissen'}
Column 6
{'x3_1_1Sitzkisse…'}
so i can later open each field in my struct "data" by calling it like this for example:
app.data.(app.VN{i})
My Problem: I want to compare different Fields with eachother in an if statement, with "i" beeing used from a for function:
for i=2:width(app.data_in)
if app.data.(app.VN{1}) == app.data.(app.VN{i})
%...
But i get the warning message "Unrecognized field name "x1_1_1RadVorneRechts"." in the line of the if statement.
If I manually output the struct "data" into the workspace, one line before the aforementioned "for" function starts, i get this output, clearly showing, that the field name exists:
data=app.data
data =
struct with fields:
x1_1_1RadVorneRechts: [401×1 double]
x1_1_1RadVorneRechts_2: [401×1 double]
x2_1_1Sitzschiene: [401×1 double]
x2_1_1Sitzschiene_2: [401×1 double]
x3_1_1Sitzkissen: [401×1 double]
x3_1_1Sitzkissen_2: [401×1 double]
Why do i get this error message and how do i resolve it? It is critical for the rest of the GUI, that i can compare different field values with eachother.
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