In[]:=
<<RQA`
Null
{RQARecurrence::shdw,RQADiagonalLineLengths::shdw}
{TestID"bff4ac0a-e62c-409f-8d7e-b4c5bcfaa78d"}
In[]:=
rmx=SparseArray1-ReverseImageData
SparseArray
{TestID"ab5c2ecc-ed76-4edf-a711-9e0e9b86ac3b"}
In[]:=
RQARecurrence[rmx]
19
45
{TestID"f58b16d6-7603-47ef-ab90-052e9975100b"}
RQA`Private`diagonalSegments[rmx]//Normal
{{0.,0.,0.,1.,1.,1.,1.,0.,1.},{1.,0.,0.,0.,0.,0.,0.,1.},{1.,0.,0.,0.,0.,0.,0.},{1.,1.,1.,1.,0.,0.},{0.,0.,0.,0.,0.},{1.,1.,0.,1.},{0.,0.,1.},{1.,1.},{1.}}
{TestID"e1eb7484-5c52-43b9-be64-21ceebea7139"}
RQADiagonalLineLengths[rmx,"Dmin"1]
{4,1,1,1,1,4,2,1,1,2,1}
{TestID"ea172c8e-19a4-494a-840e-e6c1623eabc1"}