Merge branch 'spectra_partial_merge' into 'NIFTy_5'

add missing file

See merge request !346

test/test_plot.py

+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Copyright(C) 2013-2019 Max-Planck-Society
+#
+# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
+
+import numpy as np
+
+import nifty5 as ift
+
+
+def test_plots():
+    # FIXME Write to temporary folder?
+    rg_space1 = ift.makeDomain(ift.RGSpace((100,)))
+    rg_space2 = ift.makeDomain(ift.RGSpace((80, 60), distances=1))
+    hp_space = ift.makeDomain(ift.HPSpace(64))
+    gl_space = ift.makeDomain(ift.GLSpace(128))
+
+    fft = ift.FFTOperator(rg_space2)
+
+    field_rg1_1 = ift.Field.from_global_data(rg_space1, np.random.randn(100))
+    field_rg1_2 = ift.Field.from_global_data(rg_space1, np.random.randn(100))
+    field_rg2 = ift.Field.from_global_data(
+        rg_space2, np.random.randn(80*60).reshape((80, 60)))
+    field_hp = ift.Field.from_global_data(hp_space, np.random.randn(12*64**2))
+    field_gl = ift.Field.from_global_data(gl_space, np.random.randn(32640))
+    field_ps = ift.power_analyze(fft.times(field_rg2))
+
+    plot = ift.Plot()
+    plot.add(field_rg1_1, title='Single plot')
+    plot.output(name='plot1.png')
+
+    plot = ift.Plot()
+    plot.add(field_rg2, title='2d rg')
+    plot.add([field_rg1_1, field_rg1_2], title='list 1d rg', label=['1', '2'])
+    plot.add(field_rg1_2, title='1d rg, xmin, ymin', xmin=0.5, ymin=0.,
+             xlabel='xmin=0.5', ylabel='ymin=0')
+    plot.output(title='Three plots', name='plot2.png')
+
+    plot = ift.Plot()
+    plot.add(field_hp, title='HP planck-color', colormap='Planck-like')
+    plot.add(field_rg1_2, title='1d rg')
+    plot.add(field_ps)
+    plot.add(field_gl, title='GL')
+    plot.add(field_rg2, title='2d rg')
+    plot.output(nx=2, ny=3, title='Five plots', name='plot3.png')