Non-assigned Affymetrix probes

Question

[rv]

Hello everyone,

Executing the following code:

pmi <- unlist(pmindex(batch))
mmi <- unlist(mmindex(batch))
assigned <- c(pmi, mmi)

I should point to all the assigned indices: I mean all the indices of the intensity array which are assigned to any probe sets.

However, executing:

sorted <- sort(assigned)
sorted[1: 10]

returned:

 203307_at8 217431_x_at3 215294_s_at4 205793_x_at2 210260_s_at2  209168_at10
         718          719          720          721          722          723
  210373_at2    59437_at8 216017_s_at5 214692_s_at8
         724          725          726          727

which means that indices in the range [1, 717] are non assigned (and more non assigned indices can also be found internally)

Could you, please, confirm it?

Thanks