[PROJ] proj-data is 500MB

[Sebastiaan Couwenberg]

On 7/24/20 9:31 AM, Jürgen E. Fischer wrote:
> On Fri, 24. Jul 2020 at 10:22:56 +0300, Idan Miara wrote:
>> Jürgen suggests proj 7.1 can't be included in OSGeo4W/QGIS installer
>> because proj-data is 500MB, which is too big.
>> Is it intentionally so big?
> 
> It includes all the grids.  And it's not a dependency.  The grids can also be
> downloaded dynamically, so using proj-data is probably only intended to be used
> if that's not possible for some reason.  You can also interactively download
> the grids that you need via cdn.proj.org.  QGIS does currently not support the
> dynamic download and we don't know which grid the users will need upfront - so
> either including none or all seems to be the only option.  Given that QGIS
> previously shipped several grids by default, shipping none probably isn't an
> option either - as that would break some installations.

You could split up the grids per region and only depend on a subset
(excluding au_*, ca_*, de_* & us_* removes most of the very large grids)
and suggest the rest for the users to manually install when they need it.

100.00%  523111200  ( 523.11 MB)  .
 15.41%   80585622  (  80.59 MB)  ./us_nga_egm08_25.tif
 13.96%   73022201  (  73.02 MB)  ./de_lgl_bw_BWTA2017.tif
  5.21%   27272664  (  27.27 MB)
./au_icsm_GDA94_GDA2020_conformal_and_distortion.tif
  3.26%   17033175  (  17.03 MB)  ./us_noaa_g2012bu0.tif
  3.21%   16767965  (  16.77 MB)  ./us_noaa_geoid09_conus.tif
  3.20%   16742155  (  16.74 MB)  ./us_noaa_g2018u0.tif
  3.14%   16451024  (  16.45 MB)  ./us_noaa_geoid03_conus.tif
  2.44%   12781759  (  12.78 MB)  ./au_ga_AUSGeoid09_V1.01.tif
  2.19%   11478497  (  11.48 MB)  ./us_noaa_geoid06_ak.tif
  2.17%   11342483  (  11.34 MB)  ./us_noaa_g2012ba0.tif
  2.16%   11279068  (  11.28 MB)  ./us_noaa_geoid09_ak.tif
  2.11%   11031336  (  11.03 MB)  ./ca_nrc_CGG2013an83.tif
  2.11%   11030895  (  11.03 MB)  ./ca_nrc_CGG2013n83.tif
  2.08%   10906276  (  10.91 MB)  ./ca_nrc_CGG2013ai08.tif
  2.08%   10906091  (  10.91 MB)  ./ca_nrc_CGG2013i08.tif
  1.53%    8002286  (   8.00 MB)  ./ca_nrc_ON27CSv1.tif
  1.49%    7784410  (   7.78 MB)  ./ca_nrc_ntv2_0.tif
  1.40%    7300425  (   7.30 MB)  ./ca_nrc_ON76CSv1.tif
  1.36%    7114024  (   7.11 MB)  ./dk_sdfe_gvr2016.tif
  1.18%    6180460  (   6.18 MB)  ./ca_nrc_MAY76V20.tif
  1.13%    5934098  (   5.93 MB)  ./au_icsm_National_84_02_07_01.tif
  1.12%    5839686  (   5.84 MB)  ./au_ga_AUSGeoid2020_20180201.tif
  1.00%    5232082  (   5.23 MB)  ./nz_linz_nzgeoid2016.tif

Kind Regards,

Bas

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