I know we can build custom coordinate grid (cf. url:How to create a custom coordinate grid in the QGIS 2.14.2?).
I would like to use this in an atlas but I have not succeded yet.
I get
Page 1 :
ABCDEF
1
2
3
4
Page 2 :
ABCDEF
1
2
3
4
While I would like to have a continuity in letter from page 1 to 2 :
Expected Page 2 :
GHIJKL
1
2
3
4
Any idea how to proceed?