I think this issue should be in elip 'hscMap module'.

We can access fov and rectangular selection through `.fov` and `.`rect_selection` like so:

import hscmap

w = hscmap.Window()
print(w.fov.cone_sql())
print(w.rect_selection.sql())

https://drive.google.com/open?id=1HRivWzlHITTNntjUfBOAPoZyltG9wfhe&authuser=koike.michitaro.md@alumni.tsukuba.ac.jp&usp=drive_fs

Tanaka-san said at slack:

About one of your tasks to pick objects from a circular/rectangular region.  Let me explain step by step.
1 - select objects in, e.g., COSMOS from the database
2 - mark the selected objects in hscMap
3 - if you click an object on hscMap, you can get its object ID back in Compute
4 - Currently, there is no way to select multiple objects, and this is what we want to implement.  A simple way to select multiple objects wold be to define a circular/rectangular region on hscMap, and get all objects in that region.
Is this clear?

I think the requirements of this issue can be covered by this issue.
https://pfspipe.ipmu.jp/jira/browse/SCIDB-82

To select objects spatially is task of numpy or SQL rather than hscMap's one.

res = hscdata.sql.query('SELECT...')
where = (10 <= res.ra) & (11 < res.ra)
res = res[where]

https://pfspipe.ipmu.jp/jira/browse/SCIDB-82 provides more visual method to select objects.

This issue can be closed because it can be covered with "clickable object catalog", so we can close this ticket.