HELP WITH 3-D SURF PLOT !!!!
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I want to plot Date and time against the power production, every variable has the lenght of 13104.
But if i want to plot this error come up :
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Error using reshape
To RESHAPE the number of elements must not change.
Error in Bachelorarbeit (line 173)
z=reshape(POutput,length(y),length(x));
%%%%%%%%%%%%%%%%%%%%%%
ttab=table(Date1,t,POutput); % compare everything has the same length
% creating the parameter
x=unique(Date1); %returns the data, but without repetition
y=unique(t); %returns the data, but without repetition
z=reshape(POutput,length(y),length(x));
%creating the matrix z length(x)
%returns the length of the largest array dimension in x and y
% creating a surface plot
surf(x,y,z,'Facecolor','interp') %create a surface plot
colorbar % add a colorbar
colormap(jet) % adjust the colorrange from the surface plot
zlabel('Leistung in MW') %label the z-axis
%print('Usage','-dpng') % if you want to save the plot
采纳的回答
Hi Felix,
i hope the work on your thesis runs well. As the error message says the number of elements in a reshaped matrix is not allowed to change:
>> A = randi(3,1,6)
A =
3 2 2 1 3 1
>> B =reshape(A,2,[])
B =
3 2 3
2 1 1
my example shows that you can leave away one dimension - reshape claculates the needed number of columns in this case. The following will produce error, because there are only 6 elements in A instead of 8:
>> B =reshape(A,2,4)
Error using reshape
To RESHAPE the number of elements must not change.
The command above would cause a 2x4 matrix but A has only 6 - so the result is an error. Check your code in terms of this problem. To make it more precise it seems that the prodct of
length(y) * length(x)
is not equal to:
numel(POutput)
which causes this error.
Best regards & always good weather ;-)
Stephan
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