Hi all,
I am a matplotlib novice and am having problems with imported floats
generated by a Perl script using the Maxmind Geo::IP library.
I keep getting CXX TypeErrors which I can not seem to eliminate.
Any pointers for this novice please?
I write files that return longitude and latitude and then generate a
plot script with the data set.
Many Thanks!
____________________minimally altered example plot script_______________
from matplotlib.toolkits.basemap import Basemap
import pylab as p
# set up orthographic map projection with
# perspective of satellite looking down at 50N, 100W.
# use low resolution coastlines.
# don' t plot features that are smaller than 1000 square km
map = Basemap(
projection = 'ortho',
lat_0 = 50,
lon_0 = -100,
resolution = 'c',
area_thresh = 1000.
)
# draw coastlines, country boundaries, fill continents.
map.drawcoastlines(linewidth=0.4)
map.drawcountries(linewidth=0.2)
map.fillcontinents( color = 'coral' )
# draw the edge of the map projection region (the projection limb)
map.drawmapboundary()
# draw lat/lon grid lines every 30 degrees.
map.drawmeridians( p . arange( 0, 360, 30 ) )
map.drawparallels( p . arange( -90, 90, 30 ) )
# lat/lon coordinates of five cities.
##---------------------changes
#data [altered data set import from Maxmind Geo::IP lookups
lats=[-0.0000, 1096176317235200.0000, 31226649198326710000.0000, 0.0000,
0.0000]
lons=[3.0542, 3.0423, 3.1635, 3.1523, 3.1523]
cities=['Vienna US', 'Mountain View US', 'Derby GB', 'London GB',
'London GB']
##---------------------end chages
# compute the native map projection coordinates for cities.
#map floats
x,y = map(lons,lats)
# plot filled circles at the locations of the cities.
map.plot(x,y,'bo')
# plot the names of those five cities.
for name,xpt,ypt in zip(cities,x,y):
#p.text(xpt+50000,ypt+50000,name)
p.text(xpt,ypt,name)
p.show()
__________________________________________________
##########error trace##############################
Exception in Tkinter callback
Traceback (most recent call last):
File "c:\python25\lib\lib-tk\Tkinter.py", line 1403, in __call__
return self.func(*args)
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\backends\backend_tkagg.py", line 151, in resize
self.show()
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\backends\backend_tkagg.py", line 154, in draw
FigureCanvasAgg.draw(self)
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\backends\backend_agg.py", line 392, in draw
self.figure.draw(renderer)
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\figure.py", line 569, in draw
for a in self.axes: a.draw(renderer)
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\axes.py", line 1155, in draw
a.draw(renderer)
File
"c:\python25\lib\site-packages\matplotlib-0.90.0-py2.5-win32.egg\matplotl
ib\text.py", line 414, in draw
for line, wh, x, y in info:
TypeError: CXX: type error.
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