How to extract values from a field of a stucture?
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Kelto7
el 26 de Sept. de 2019
Comentada: Kelto7
el 26 de Sept. de 2019
Hi everyone, I state that I'm a beginner in the use of Matlab, so I guess that what I'm asking could be solved quite easily, but I have been reading and trying a lot of different ways and still, I have no solutions. I have a structure ("Dati"), which is generated by an external software that works on a geographic grid. This grid has 196 cells in the X direction, and 337 in the Y direction; On this grid 244 different scenarios have been launched.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/239959/image.png)
By writing "A=extractfield(Dati,'Val') I get, of course, the list of all the data inside the structure, and by "plot(extractfield(Dati,'X'),extractfield(Dati,'Y'))" I can represent the grid; but what I would like is to get the chance to represent in a plot the grid with all the different scenarios (244), and be able to handle the value of the third variable (energy per transport) in order to later calculate an average. Can someone help me?
0 comentarios
Respuesta aceptada
Fabio Freschi
el 26 de Sept. de 2019
I don't have the data so I cannot test it. Try
% select the Scenario
iScenario = 1;
% plot
surf(Dati.X,Dati.Y,Dati.Val(iScenario,:,:));
Note that the field Val has different dimensions from X and Y, so the previous code doesn't work. But maybe you have more insight on the original data
5 comentarios
Fabio Freschi
el 26 de Sept. de 2019
I arbitrarily remove the first row and column of X and Y to match the dimensions of Val. Maybe you know why X and Y have an additional row/col
figure;
s = surf(data.X(2:end,2:end),data.Y(2:end,2:end),squeeze(data.Val(1,:,:)));
s.EdgeColor = 'none';
light
Más respuestas (0)
Ver también
Categorías
Más información sobre Resizing and Reshaping Matrices en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!