require dcpam.rb
Add Ps
Add method

Add calc_regression_sloop for calculation of  regression sloop.
Update help messeage
Adapt to Opt.charge
Enable to work

Fix some bugs
Fix bug
Merge branch 'bug_fix'
Enhance optione function

Add
--xmax, --xmin
--ymax, --ymin
and some ...
Add planetary_albedo
Add some methods

-- local2degree
-- calc_planetary_albedo
-- cos_ang
Add some methods

-- delete
-- glmean
-- latmean
Enable to work
:golf:
Clean
Clean
Minor change
Change option key

:varname -> :name
Merge branch 'bug_fix'