Many thanks Raymond: that is helpful. Now at least I know what the
projection is! As QGIS has so many projections it never occurred to me
that there may be one that it didn't include. I will now see if there is
some other way - outside QGIS perhaps? - to convert this projection into
something more friendly (so to speak).
Martin
On 19/03/17 21:30, Raymond Nijssen wrote:
Hi Martin,
Sorry, I cannot really help you.
Your data seems to be in the (quite odd for distributing data)
projection:
https://en.wikipedia.org/wiki/Goode_homolosine_projection
And it is not recognized by qgis.
Proj4 seems to know it though:
http://proj4.org/projections/igh.html
And I found this:
http://gis.stackexchange.com/questions/17263/is-it-possible-to-use-the-goode-homolosine-projection-in-qgis
Hope it helps (a bit),
Raymond
On 19-03-17 20:49, Martin wrote:
Hello folks!
I would like to plot a simple map of the WWF World Grassland Types (the
shape file is available at
https://www.worldwildlife.org/publications/world-grassland-types
It is in an unusual projection. The .prj file is:
PROJCS["World_Goode_Homolosine_Land",GEOGCS["GCS_WGS_1984",DATUM
["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM
"Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION
["Goode_Homolosine"],PARAMETER["False_Easting",0.0],PARAMETER
["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER
["Option",1.0],UNIT["Meter",1.0]]
The map does not include the outline countries of the world and
therefore I would like to add these (perhaps the NaturalEarth 110
million scale country shape file, which is in WGS84).
However, I cannot figure out how to align the grassland layer and the
110 million NaturalEarth layer. As I understand it, I should use Save As
to reproject the grassland shape file with a new CRS (perhaps Mercator).
With Enable on the fly CRS transformation enabled I should then be able
to put the two shape files together - but I am darned if I can obtain
anything sensible: I cannot get the two layers to align in any way.
With grateful thanks for any help, Martin
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