Why there is error in using interp2 while assigning loaded data to the variable?
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I have a separate struct data file (.mat format) which I need to load and perform interp2.
The struct data file is as in the figure,
The matlab code runs fine while I am using following code
load("H2.mat");
h = interp2(data.P,data.T,data.H,235e+05,315);
But it gives error while using following code
data = load("H2.mat");
h = interp2(data.P,data.T,data.H,235e+05,315);
The error says
Unrecognized field name "P".
Error in hydrogen_enthalpy (line 5)
h = interp2(data.P,data.T,data.H,235e+05,315);
How can this problem be solved?
1 个评论
"How can this problem be solved?"
By saving the data in the MAT file as separate arrays, and not stuck inside a scalar structure. This has other benefits too, e.g. the ability to load/replace individual arrays from the MAT file, or accessing them without loading using MATFILE.
Use the -STRUCT option to achieve this. For example:
D.hello = 'blah';
D.world = pi;
save ('test.mat','-struct','D')
Now all of the arrays are saved separately, not in one scalar structure:
whos -file test.mat
This means the data can be imported directly into the output structure as you expected:
S = load('test.mat')
S.hello
S.world
采纳的回答
Try this:
S = load("H2.mat");
data = S.data;
h = interp2(data.P,data.T,data.H,235e+05,315);
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