Problem in the upsampling process for computing Y and Z

[liulj13]

Hi, thanking you for your great work!
I have some problems regarding the upsampling process.
In the line 212 to line 215 in scripts/convert.py, to compute the Y and Z you wrote:
`# get Y
interm[:,1] = xyzirl1[:,1] + d*(xyzirl2[:,1]-xyzirl1[:,1]) / D # y1 + d * (y2-y1) / D
'# get Z
interm[:,2] = xyzirl1[:,2] + d*(xyzirl2[:,2]-xyzirl1[:,2]) / D # z1 + d * (z2-z1) / D
I am wondering why don't you just use the average number instead?
interm[:,1] = (xyzirl1[:,1] + xyzirl2[:,1]) / 2
interm[:,2] = (xyzirl1[:,2] + xyzirl2[:,2]) / 2
Why it is not in the way that you compute the X, I, R?