Re: [Matplotlib-users] indicating directions on stereographic projection.
Thanks everyone for your views. Joe- Thank you for the link. It's really worthy. On Thu, Nov 7, 2013 at 3:53 AM, Piet van Oostrum p...@vanoostrum.orgwrote: Paul Hobson wrote: On Wed, Oct 23, 2013 at 9:30 PM, Sourav Chatterjee srv@gmail.com wrote: Hello, I have stereographic projection of the pole. I need to indicate the directions like north,south,east, west, north-east, north-west and so on. Is there any way to do so? Thanks Sourav I am **very far** from a GIS expert, but I believe that the cardinal directions are ambiguous at the poles. In other words, if you're standing on the North Pole, it'd difficult to head in any direction that's not towards the south pole. Curious to hear if I'm wrong, though. Yes, on the North Pole, every direction is South, on the South Pole, every direction is North. -- Piet van Oostrum p...@vanoostrum.org WWW: http://pietvanoostrum.com/ PGP key: [8DAE142BE17999C4] -- Sourav Chatterjee Trainee Scientist Indian Institute of Tropical Meteorology, Pune -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] indicating directions on stereographic projection.
On Wed, Oct 23, 2013 at 9:30 PM, Sourav Chatterjee srv@gmail.comwrote: Hello, I have stereographic projection of the pole. I need to indicate the directions like north,south,east, west, north-east, north-west and so on. Is there any way to do so? Thanks Sourav I am **very far** from a GIS expert, but I believe that the cardinal directions are ambiguous at the poles. In other words, if you're standing on the North Pole, it'd difficult to head in any direction that's not towards the south pole. Curious to hear if I'm wrong, though. -paul -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] indicating directions on stereographic projection.
Sourav - Are you by chance trying to make a stereonet? If so, your question makes a bit more sense. If that's what you're doing, have a look at mplstereonet. https://github.com/joferkington/mplstereonet It currently doesn't support polar stereonets, but that's something I've been meaning to add for a long time. If that's not what you're doing, then perhaps you wanted something similar to this? (The directions don't have much meaning, as others have already pointed out): from mpl_toolkits.basemap import Basemap import numpy as np import matplotlib.pyplot as plt m = Basemap(projection='npstere',boundinglat=10,lon_0=270,resolution='l') m.drawcoastlines() m.fillcontinents(color='coral',lake_color='aqua') m.drawmapboundary(fill_color='aqua') # draw parallels and meridians. m.drawparallels(np.arange(-80.,80.,20.)) ticks = m.drawmeridians(np.arange(-180.,180.,20.), labels=[True, True, True, True]) # Change the meridian label at 0 and 180 to East and West for value, label in zip([0.0, -180.0], ['East', 'West']): ticks[value][1][0].set_text(label) plt.show() Hope that helps! -Joe On Wed, Nov 6, 2013 at 1:34 PM, Jason Grout jason-s...@creativetrax.comwrote: On 11/6/13 1:10 PM, Paul Hobson wrote: I am **very far** from a GIS expert, but I believe that the cardinal directions are ambiguous at the poles. In other words, if you're standing on the North Pole, it'd difficult to head in any direction that's not towards the south pole. Curious to hear if I'm wrong, though. I'm sure I'm even farther from being a GIS expert (and probably farther from one as well :), but I think you raise an interesting point. My compass would give me directions at the geographic north pole, given that the magnetic north pole is different from the geographic north pole. I'm curious how valid it would be to use magnetic north to assign directions at the geographic north pole. My guess is not very valid, but kind of cool nonetheless. Jason -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] indicating directions on stereographic projection.
Paul Hobson wrote: On Wed, Oct 23, 2013 at 9:30 PM, Sourav Chatterjee srv@gmail.com wrote: Hello, I have stereographic projection of the pole. I need to indicate the directions like north,south,east, west, north-east, north-west and so on. Is there any way to do so? Thanks Sourav I am **very far** from a GIS expert, but I believe that the cardinal directions are ambiguous at the poles. In other words, if you're standing on the North Pole, it'd difficult to head in any direction that's not towards the south pole. Curious to hear if I'm wrong, though. Yes, on the North Pole, every direction is South, on the South Pole, every direction is North. -- Piet van Oostrum p...@vanoostrum.org WWW: http://pietvanoostrum.com/ PGP key: [8DAE142BE17999C4] -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
