Detailed proj_trans print

[anthonynorth]

Adds detailed proj transformer print method. Example:

PROJ::proj_trans_create("EPSG:4283", "EPSG:3112")
#> <proj_trans at 0xaaab00fccfa0>
#> type: Concatenated Operation
#> id: pipeline
#> description: axis order change (2D) + Geoscience Australia Standard National Scale Lambert Projection
#> definition: proj=pipeline step proj=unitconvert xy_in=deg xy_out=rad step proj=lcc lat_0=0 lon_0=134 lat_1=-18 lat_2=-36 x_0=0 y_0=0 ellps=GRS80
#> area_of_use:
#>   name: World
#>   bounds: [-180 -90 180 90]
#> source_crs:
#>   type: Geographic 2D CRS
#>   id: EPSG:4283
#>   name: GDA94
#>   area_of_use:
#>     name: Australia including Lord Howe Island, Macquarie Island, Ashmore and Cartier Islands, Christmas Island, Cocos (Keeling) Islands, Norfolk Island. All onshore and offshore.
#>     bounds: [93.41 -60.55 173.34 -8.47]
#> target_crs:
#>   type: Projected CRS
#>   id: EPSG:3112
#>   name: GDA94 / Geoscience Australia Lambert
#>   area_of_use:
#>     name: Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria.
#>     bounds: [112.85 -43.7 153.69 -9.86]

^{Created on 2024-01-17 with reprex v2.0.2}

[anthonynorth]

@mdsumner, is the print output too verbose? Or is anything missing that you'd like added?

Normalising has some affect on the area_of_use. In this example, area of use for the not-normalised transformer is [112.85 -43.7 153.69 -9.86] instead of World. We can patch this if it's important.

[mdsumner]

all the information I want to see is there 🙏🤘

[mdsumner]

looks good to me!