draw lines in basemap

Community matplotlib-users
1

Hi,
I'm trying to produce a map with 12 locations marked on it and straight lines plotted between each point and all other points on the map. I have the map with the locations ok but am having trouble getting the lines. My code is below anyone know how to do this??
Thanks
D

from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
             resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142, 54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237, 52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698, -8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873, -9.8456417, -9.4344939]

x, y = m(lons, lats)
for i in range(len(lons)):
     for j in range(len(lons)):
         if i == j: continue
         m.plot([x[i],y[i]],[x[j],y[j]],'k')

m.plot(x, y, 'bD', markersize=10)
m.drawcoastlines()
#m.drawmapboundary()
#plt.savefig('/media/A677-86E0/dot_size'+str(i)+'.png')
plt.show()

2

David Craig :

I'm trying to produce a map with 12 locations marked on it and straight
lines plotted between each point and all other points on the map. I have
the map with the locations ok but am having trouble getting the lines.
My code is below anyone know how to do this??
...
for i in range(len(lons)):
      for j in range(len(lons)):
          if i == j: continue
          m.plot([x[i],y[i]],[x[j],y[j]],'k')

I am not sure what do you really want, but perhaps replace the last cited line by:

m.plot([x[i],x[j]],[y[i],y[j]],'k')

···

==

All the best.

Jerzy Karczmarczuk
Caen, France

3

David,

The loop is you have is unnecessary. You can plot the markers and the
lines at the same time like so:
from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
            resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142,
54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237,
52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698,
-8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873,
-9.8456417, -9.4344939]

m.plot(x, y, 'D-', markersize=10, linewidth=2, color='k', markerfacecolor='b')
m.drawcoastlines()
plt.show()

Hope that helps,
-paul

···

On Wed, Feb 29, 2012 at 4:27 AM, David Craig <dcdavemail@...287...> wrote:

Hi,
I'm trying to produce a map with 12 locations marked on it and straight
lines plotted between each point and all other points on the map. I have
the map with the locations ok but am having trouble getting the lines.
My code is below anyone know how to do this??
Thanks
D

from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142,
54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237,
52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698,
-8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873,
-9.8456417, -9.4344939]

x, y = m(lons, lats)
for i in range(len(lons)):
for j in range(len(lons)):
if i == j: continue
m.plot([x[i],y[i]],[x[j],y[j]],'k')

m.plot(x, y, 'bD', markersize=10)
m.drawcoastlines()
#m.drawmapboundary()
#plt.savefig('/media/A677-86E0/dot_size'+str(i)+'.png')
plt.show()

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4

Whoops, make that:
from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
            resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142,
54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237,
52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698,
-8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873,
-9.8456417, -9.4344939]

x, y = m(lons, lats) # forgot this line
m.plot(x, y, 'D-', markersize=10, linewidth=2, color='k', markerfacecolor='b')
m.drawcoastlines()
plt.show()

···

On Thu, Mar 1, 2012 at 6:43 PM, Paul Hobson <pmhobson@...287...> wrote:

David,

The loop is you have is unnecessary. You can plot the markers and the
lines at the same time like so:
from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142,
54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237,
52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698,
-8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873,
-9.8456417, -9.4344939]

m.plot(x, y, 'D-', markersize=10, linewidth=2, color='k', markerfacecolor='b')
m.drawcoastlines()
plt.show()

Hope that helps,
-paul

On Wed, Feb 29, 2012 at 4:27 AM, David Craig <dcdavemail@...287...> wrote:

Hi,
I'm trying to produce a map with 12 locations marked on it and straight
lines plotted between each point and all other points on the map. I have
the map with the locations ok but am having trouble getting the lines.
My code is below anyone know how to do this??
Thanks
D

from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
import matplotlib.lines as lines
import numpy as np

m = Basemap(llcrnrlon=-11.5,llcrnrlat=51.0,urcrnrlon=-4.5,urcrnrlat=56.0,
resolution='i',projection='cass',lon_0=-4.36,lat_0=54.7)

lats = [53.5519317,53.8758499, 54.2894659, 55.2333142,
54.9846137,54.7064869, 51.5296651, 51.5536226, 51.7653115, 52.1625237,
52.5809163, 52.9393892]

lons = [-9.9413447, -9.9621948, -8.9583439, -7.6770179, -8.3771698,
-8.7406732, -8.9529546, -9.7907148, -10.1531573, -10.4099873,
-9.8456417, -9.4344939]

x, y = m(lons, lats)
for i in range(len(lons)):
for j in range(len(lons)):
if i == j: continue
m.plot([x[i],y[i]],[x[j],y[j]],'k')

m.plot(x, y, 'bD', markersize=10)
m.drawcoastlines()
#m.drawmapboundary()
#plt.savefig('/media/A677-86E0/dot_size'+str(i)+'.png')
plt.show()

------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
matplotlib-users List Signup and Options