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Broken cylindrical projections in 0.2.2? #37

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herrstucki opened this issue Apr 12, 2012 · 5 comments
Open

Broken cylindrical projections in 0.2.2? #37

herrstucki opened this issue Apr 12, 2012 · 5 comments
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@herrstucki
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@herrstucki herrstucki commented Apr 12, 2012

When I try to render a (pseudo?)cylindrical projection with 0.2.2 (e.g. winkel3), I get following error:

Traceback (most recent call last):
  File "/usr/local/bin/kartograph", line 8, in <module>
    load_entry_point('kartograph.py==0.2.2', 'console_scripts', 'kartograph')()
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/cli.py", line 103, in main
    args.func(args)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/cli.py", line 65, in svg
    K.generate(cfg, args.output)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/kartograph.py", line 26, in generate
    proj = self.get_projection(opts)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/kartograph.py", line 94, in get_projection
    proj = projC(**p_opts)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/pseudocylindrical.py", line 366, in __init__
    Aitoff.__init__(self, lon0=lon0, flip=flip)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/pseudocylindrical.py", line 341, in __init__
    PseudoCylindrical.__init__(self, lon0=lon0, flip=flip)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/pseudocylindrical.py", line 26, in __init__
    Cylindrical.__init__(self, lon0=lon0, flip=flip)
  File "/Library/Python/2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/cylindrical.py", line 32, in __init__
    from Polygon import MultiPolygon as Poly
ImportError: cannot import name MultiPolygon

This seems to have been introduced with this commit: 84d80fa

@lossy
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@lossy lossy commented May 17, 2012

Thank you so much for this great work - this is very useful.
I have the same issue as above, error when rendering certain projections when prog->lon0 is not zero. I am using Python 2.7 on Linux (Centos). Looks like "MultiPolygon" class of Polygon lib not registered/available, but this is the first time I ever installed a Python program so fault probably with me - any tips gratefully recieved!

Traceback (most recent call last):
File "/usr/bin/kartograph", line 9, in
load_entry_point('kartograph.py==0.2.2', 'console_scripts', 'kartograph')()
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/cli.py", line 103, in main
args.func(args)
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/cli.py", line 65, in svg
K.generate(cfg, args.output)
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/kartograph.py", line 26, in generate
proj = self.get_projection(opts)
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/kartograph.py", line 94, in get_projection
proj = projC(**p_opts)
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/cylindrical.py", line 173, in init
Cylindrical.init(self, lon0=lon0, flip=flip)
File "/opt/python2.7/lib/python2.7/site-packages/kartograph.py-0.2.2-py2.7.egg/kartograph/proj/cylindrical.py", line 32, in init
from Polygon import MultiPolygon as Poly
ImportError: cannot import name MultiPolygon

Here's a config file to reproduce the error:
(no error if you change lon0 to 0)

{

"proj": {
"id": "mercator",
"lon0": 10,
"lat0": 0
},

"layers": [
{
"id": "countries",
"src": "ne_50m_admin_0_countries.shp"
}
],

"export": {
"width": 600,
"height": "auto"
},

"bounds": {
"mode": "bbox",
"data": [70,17,135,54]
}

}

@mohamedamami
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@mohamedamami mohamedamami commented May 29, 2012

Any news about this issue

@mtvv
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@mtvv mtvv commented Jun 21, 2012

I have the same problem too. Basically the only projections I can use are "ortho", "satellite" and "stereo".

@mtvv
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@mtvv mtvv commented Jul 18, 2012

I have just found out that using 'auto' instead of a number for 'lon0' makes cylindrical projections work.
So using the following produces a winkle triple projection:

{
    "proj": {
       "id": "winkel3",
       "lon0": "auto"
    }
}
@neapel
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@neapel neapel commented Aug 28, 2012

Polygon 2.0.4 doesn't include MultiPolygon.

$ python
Python 2.7.3
>>> import Polygon
>>> Polygon.__version__
'2.0.4'
>>> from Polygon import MultiPolygon
ImportError: cannot import name MultiPolygon

I think it's a typo: in conic.py and cylindrical.py, instead of from Polygon import, it should be from kartograph.geometry.polygon.import: d89bd1a
I get some more errors then, though, like Polygon.Polygon not having an operator &.

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