I think the problem is associated with the way np.arange is used. "np.arange(0,10,20)" would return array[0]
If you still would like to manually configure the tick positions the way you seemed to want, you can use "np.linspace". Below worked for me. ---- import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot(1,1,1) x = np.linspace(0,10,50) y = np.sin(x) ax.plot(x,y) ax.grid('on') leg = plt.legend(['legend 1']) plt.title('Sample title') ax.set_ylabel('Sample ylabel') ax.set_xlabel('Sample xlabel') ax.set_xticks(np.linspace(0, 10, 11)) ax.set_yticks(np.linspace(-1,1,11)) ax.minorticks_on() plt.show() * Youngung Jeong* On Wed, Jun 3, 2015 at 9:27 AM, <step...@theboulets.net> wrote: > Hm, I tried both suggestions, and still no grid (removed PDF for > simplicity): > > import matplotlib.pyplot as plt > import numpy as np > > fig = plt.figure() > ax = fig.add_subplot(1,1,1) > > x = np.linspace(0,10,50) > y = np.sin(x) > > plt.clf() > > plt.clf() > plt.plot(x,y) > leg = plt.legend(['legend 1']) > plt.title('Sample title') > ax.set_ylabel('Sample ylabel') > ax.set_xlabel('Sample xlabel') > > ax.set_xticks(np.arange(0, 10, 20)) > ax.set_xticks(np.arange(0, 10, 5), minor=True) > ax.set_yticks(np.arange(-1,1,20)) > ax.set_yticks(np.arange(-1,1,20), minor=True) > > ax.minorticks_on() > ax.grid('on') > plt.show() > > > > > And if you meant 'grid', I guess > > > > ax.grid('on') > > > > should be added. > > > > * Youngung Jeong, ì •ì˜ ì›…* > > > > On Mon, Jun 1, 2015 at 4:38 PM, Sterling Smith <smit...@fusion.gat.com> > > wrote: > > > >> Stephen, > >> > >> In your script, you give > >> ax.minorticks_on > >> but you need to call that function for anything to occur > >> ax.minorticks_on() > >> > >> > >> Also, did you see > >> http://matplotlib.org/examples/pylab_examples/axes_props.html > >> in case your original question was not answered. > >> > >> -Sterling > >> > >> On Jun 1, 2015, at 1:24PM, step...@theboulets.net wrote: > >> > >> > I only see that you added "plt.show()", but neither the grid or the > >> axis > >> > labels are showing up. > >> > > >> >> Here is what I see with a couple of things modified ? > >> >> did you expect something else ? > >> >> > >> >> from matplotlib.backends.backend_pdf import PdfPages > >> >> import matplotlib.pyplot as plt > >> >> import numpy as np > >> >> > >> >> fig = plt.figure() > >> >> ax = fig.add_subplot(1,1,1) > >> >> > >> >> x = np.linspace(0,10,50) > >> >> y = np.sin(x) > >> >> > >> >> with PdfPages('grid_test.pdf') as pdf: > >> >> plt.clf() > >> >> > >> >> plt.clf() > >> >> plt.plot(x,y) > >> >> leg = plt.legend(['legend 1']) > >> >> plt.title('Sample title') > >> >> ax.set_ylabel('Sample ylabel') > >> >> ax.set_xlabel('Sample xlabel') > >> >> > >> >> ax.set_xticks(np.arange(0, 10, 20)) > >> >> ax.set_xticks(np.arange(0, 10, 5), minor=True) > >> >> ax.set_yticks(np.arange(-1,1,20)) > >> >> ax.set_yticks(np.arange(-1,1,20), minor=True) > >> >> > >> >> ax.minorticks_on > >> >> plt.show() > >> >> > >> >> pdf.savefig() > >> >> > >> >> > >> >> [cid:8C80F2A2-AD50-4E09-B0EF-0596312F5093@ornl.gov] > >> >> > >> >> > >> >> > >> >> On Jun 1, 2015, at 2:49 PM, > >> >> <step...@theboulets.net<mailto:step...@theboulets.net>> > >> >> wrote: > >> >> > >> >> I am having an issue with the grid not appearing that I cannot figure > >> out. > >> >> Can anyone help? Thanks. --StephenB > >> >> > >> >> from matplotlib.backends.backend_pdf import PdfPages > >> >> import matplotlib.pyplot as plt > >> >> import numpy as np > >> >> > >> >> fig = plt.figure() > >> >> ax = fig.add_subplot(1,1,1) > >> >> > >> >> x = np.linspace(0,10,50) > >> >> y = np.sin(x) > >> >> > >> >> with PdfPages('grid_test.pdf') as pdf: > >> >> plt.clf() > >> >> > >> >> plt.clf() > >> >> plt.plot(x,y) > >> >> leg = plt.legend(['legend 1']) > >> >> plt.title('Sample title') > >> >> ax.set_ylabel('Sample ylabel') > >> >> ax.set_xlabel('Sample xlabel') > >> >> > >> >> ax.set_xticks(np.arange(0, 10, 20)) > >> >> ax.set_xticks(np.arange(0, 10, 5), minor=True) > >> >> ax.set_yticks(np.arange(-1,1,20)) > >> >> ax.set_yticks(np.arange(-1,1,20), minor=True) > >> >> > >> >> ax.minorticks_on > >> >> > >> >> pdf.savefig() > >> >> > >> >> > >> >> > >> > ------------------------------------------------------------------------------ > >> >> _______________________________________________ > >> >> Matplotlib-users mailing list > >> >> Matplotlib-users@lists.sourceforge.net<mailto: > >> Matplotlib-users@lists.sourceforge.net> > >> >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >> >> > >> >> > >> >> > >> > > >> > > >> > > >> > > >> > ------------------------------------------------------------------------------ > >> > _______________________________________________ > >> > Matplotlib-users mailing list > >> > Matplotlib-users@lists.sourceforge.net > >> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >> > >> > >> > >> > ------------------------------------------------------------------------------ > >> _______________________________________________ > >> Matplotlib-users mailing list > >> Matplotlib-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >> > > > > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users >
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