Hello,
Is there any way to vary interpolation or adding specific number to eliminate unwanted points. For example, in my case the arrows in the opposite direction. In other words, what I should add in this: Interpolation[data]
In[5]:= data = MapThread[{{#1, #2}, #3} &, {z, x, ffun}]
Out[5]= Out[5]
In[6]:= q = Interpolation[data]
Out[6]= InterpolatingFunction[{{0.336, 0.352}, {0.439, 0.455}}, <>]
In[7]:= gradient[a_, b_, i_] :=
Evaluate[Grad[q[a[[i]], b[[i]]], {a[[i]], b[[i]]}]]
In[8]:= gr =
Reap[Do[Sow[{z[[i]], x[[i]], gradient[z, x, i]}], {i,
Length[z]}]][[-1, 1]]
Out[8]= Out[8]
In[9]:= vunorm = Im[gr[[;; , 3]]];
In[10]:= vn = Normalize /@ vunorm;
In[11]:=
vnn = Table[{z[[i]], x[[i]], vn[[i]]}, {i, 1, Length[vn]}]
Out[11]= Out[11]
In[12]:= list = Partition[Flatten[vnn], 4];
In[13]:= vl =
ListVectorPlot[list, VectorScale -> Small, VectorPoints -> {25, 25}]
For more details, please see the attachment.
Many thanks in advance!