Iterating through a structure
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Jordan Coombs
el 12 de Dic. de 2020
Comentada: Jordan Coombs
el 13 de Dic. de 2020
I am trying to create a mask using by 168x1 struct but whenever i run the code i get this error - Expected one output from a curly brace or dot indexing expression, but there were 168 results.
Is there a way i can iterate through the structure and create a mask out of these fields.
Any help is appreciated
[x,y] = pixcenters(R);
[X,Y] = meshgrid(x,y);
names = fieldnames(S);
no_afr_stru = cell2struct(filt_nonaf_country,names,1);
fn = fieldnames(no_afr_stru);
rx = no_afr_stru.X(1:end-1);
ry = no_afr_stru.Y(1:end-1);
mask = inpolygon(X,Y,rx,ry);
2 comentarios
Ive J
el 13 de Dic. de 2020
Please provide more details so that everyone can reproduce your error. For starters, what are X, Y, rx and ry? can you provide an example?
Respuesta aceptada
Rik
el 13 de Dic. de 2020
You can index a struct in a loop:
rx = no_afr_stru(n).X(1:end-1);
ry = no_afr_stru(n).Y(1:end-1);
Más respuestas (1)
Ive J
el 13 de Dic. de 2020
Editada: Ive J
el 13 de Dic. de 2020
Try this:
mask = arrayfun(@(x)inpolygon(X, Y, x.X, x.Y), no_afr_stru, 'UniformOutput', false);
2 comentarios
Rik
el 13 de Dic. de 2020
I suspect the goal is to create a single mask, which would be easier with a loop. Also, arrayfun will have an overhead.
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