using fimplicit with an equation

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Daniel Hunt
Daniel Hunt 2018-2-25
评论： Daniel Hunt 2018-2-25
I am trying to create a plot of a 3D implicit function given by :
sin(x + y) + sin(x − y) + sin(y + z) + sin(y − z) + sin(x + z) + sin(x − z) = 0.
The code i have tried so far is:
%this is an mfile that explores and plots a given 3D implicit function %using the fimplicit command x=[-1:0.0001:-0.0001,0.0001:0.0001:1]; y=[-1:0.0001:-0.0001,0.0001:0.0001:1]; z=[-1:0.0001:-0.0001,0.0001:0.0001:1]; fimplicit3(sin(x+y)+sin(x-y)+sin(y+z)+sin(y-z)+sin(x+z)+sin(x-z)=0)
This gives me the error code 'the expression on the left of the equals sign is not a valid target for assignment.
Removing the =0 gives me the following string of errors:
Error using nargin Argument must be either a character vector or a function handle.
Error in matlab.graphics.function.ImplicitFunctionSurface>getFunction
Error in matlab.graphics.function.ImplicitFunctionSurface/updateFunction
Error in matlab.graphics.function.ImplicitFunctionSurface/set.Function
Error in matlab.graphics.function.ImplicitFunctionSurface
Error in fimplicit3>singleFimplicit (line 182) hObj = matlab.graphics.function.ImplicitFunctionSurface(fn,extraOpts{:},args{:});
Error in fimplicit3>@(f)singleFimplicit(cax,f,limits,extraOpts,args) (line 146) hObj = cellfun(@(f) singleFimplicit(cax,f,limits,extraOpts,args),fn,'UniformOutput',false);
Error in fimplicit3>vectorizeFimplicit (line 146) hObj = cellfun(@(f) singleFimplicit(cax,f,limits,extraOpts,args),fn,'UniformOutput',false);
Error in fimplicit3 (line 120) hObj = vectorizeFimplicit(cax,fn,limits,extraOpts,args);
Error in fimplicit (line 6) fimplicit3(sin(x+y)+sin(x-y)+sin(y+z)+sin(y-z)+sin(x+z)+sin(x-z))
Any guidance on this command or perhaps a different command i should be using would be much appreciated
  2 个评论
Daniel Hunt
Daniel Hunt 2018-2-25
I have also tried using f=@(x,y,z) and then my function and get the same error message as before
Daniel Hunt
Daniel Hunt 2018-2-25
I've worked out what my problem was. All sorted now

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