v.info vs. r.info: different region output formats

[sebastianh]

In a location with a geographic crs, the region outputs (esp. the unit formats) of vector and raster layers differs from each other. v.info prints the region in decimal degrees (DD) whereas r.info produces an output in degrees,minutes,seconds (DMS).

For example (nc_ll location from www.grassbooks.org):

 > v.info -g precip_30ynormals
 north=36.49917
 south=33.99472
 east=-75.62194
 west=-84.02389
 top=1615.440000
 bottom=2.438400

 > r.info -g elev_ned_03arcsec
 north=35:54:40.666666N
 south=35:35:17.334885N
 east=78:27:08.335106W
 west=78:49:17.333333W

For parsing both ouputs with external tools, it would be better if the formats were equal (preferably decimal degrees).

[neteler]

I have added top/bottom support (patch attached) but it seems to work only in not-latlong locations:

{{{r.info -g elev_ned_03arcsec north=35:54:40.666666N south=35:35:17.334885N east=78:27:08.335106W west=78:49:17.333333W top=1E bottom=0 }}}

Apparently there is some extra magic in g.region -p3.

Markus

[martinl]

BTW in GRASS7 I would like to add shell script style output for r/v.info. To follow standard flag naming, this flag should '-g' which is now reserved for "Print map region only" (which could be renamed to '-r'.) ?

Martin

[neteler]

Corrected patch attached:

r.info -g elev_ned_03arcsec
north=35:54:40.666666N
south=35:35:17.334885N
east=78:27:08.335106W
west=78:49:17.333333W
top=170.099487
bottom=20.991688

[neteler]

added top/bottom of map (not region)

[neteler]

Submitted to 6.4.svn (r34114) and 7.svn (r34113).

Markus

[glynn]

Replying to neteler:

Submitted to 6.4.svn (r34114) and 7.svn (r34113).

This is bogus. zmin and zmax are the range of the data (which isn't necessarily elevation). This information is added to the output by the -r flag.

"top" and "bottom" are only meaningful for 3d rasters; note that "r3.info -g" does output top= and bottom=.

Changes reverted.

[glynn]

Replying to sebastianh:

In a location with a geographic crs, the region outputs (esp. the unit formats) of vector and raster layers differs from each other. v.info prints the region in decimal degrees (DD) whereas r.info produces an output in degrees,minutes,seconds (DMS).

For parsing both ouputs with external tools, it would be better if the formats were equal (preferably decimal degrees).

Done (also for r3.info). In r34118, -g now always outputs in decimal.

[neteler]

Backported to 6.4.svn (r34119).

Markus

[hamish]

Replying to martinl:

BTW in GRASS7 I would like to add shell script style output for r/v.info.

? don't we already have that in GRASS 6.x from lots of flags?

To follow standard flag naming, this flag should '-g' which is now reserved for "Print map region only" (which could be renamed to '-r'.) ?

-g is used across modules more generally to mean "output in shell script style"; albeit usually (but not always) to do with region bounds. (eg r.univar)

As '-r' works quite nicely for "range" (IMO) I don't see the need for a change. As long as we are consistent it is quickly learned.

2c, Hamish

[martinl]

Milestone renamed

[neteler]

Ticket retargeted after milestone closed

[martinl]

All enhancement tickets should be assigned to 7.6 milestone.

[martinl]

Ticket retargeted after milestone closed

[martinl]

Ticket retargeted after milestone closed