Help with syntax for a self-made function
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Teshan Rezel
il 12 Ago 2021
Commentato: Teshan Rezel
il 16 Ago 2021
Hi folks,
I have the following function defined in Matlab but am getting an error when running. The error and the code are below. May I please ask for help with debugging this?
Thanks in advance
function fields = populateFields(index, structure)
Area(index) = getfield(structure, 'Area');
MajorAxisLength(index) = getfield(structure, 'MajorAxisLength');
MinoeAxisLength(index) = getfield(structure, 'MinorAxisLength');
Eccentricity(index) = getfield(structure, 'Eccentricity');
Orientation(index) = getfield(structure, 'Orientation');
ConvexArea(index) = getfield(structure, 'ConvexArea');
Circularity(index) = getfield(structure, 'Circularity');
EquivDiameter(index) = getfield(structure, 'EquivDiameter');
Solidity(index) = getfield(structure, 'Solidity');
Extent(index) = getfield(structure, 'Extent');
Perimeter(index) = getfield(structure, 'Perimeter');
MaxFeretDiameter(index) = getfield(structure, 'MaxFeretDiameter');
MaxFeretAngle(index) = getfield(structure, 'MaxFeretAngle');
MinFeretDiameter(index) = getfield(structure, 'MinFeretDiameter');
MinFeretAngle(index) = getfield(structure, 'MinFeretAngle');
end
function call:
[matrix, numObjects] = bwlabel(mask1);
rg = regionprops(matrix, 'all');
fields = populateFields(1, rg);
The error:
Output argument "fields" (and maybe others) not assigned during call to "Threshold>populateFields".
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Simon Chan
il 12 Ago 2021
Modificato: Simon Chan
il 12 Ago 2021
You have not define your output variable 'fields' in your function, so nothing returns from the function
11 Commenti
Stephen23
il 14 Ago 2021
Modificato: Stephen23
il 14 Ago 2021
"It seems like this technique doesn't allow for that."
Here are two simple approaches you could use. Either use the same index
for k = ..
RG(k) = regionprops(mask1, 'all');
RG(k).Area
..
end
or a temporary variable:
for k = ..
tmp = regionprops(mask1, 'all');
tmp.Area
..
RG(k) = tmp;
end
What did you try?
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