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faulthandler.enable() # to debug seg faults and timeouts -DATA_DIR = "../../cfplot_data" +DATA_DIR = "cfplot_data" +TEST_GEN_DIR = "./generated-example-images" +TEST_REF_DIR = "./reference-example-images" def compare_images(example=None): """ Compare images and return an error string if they don't match. """ - import hashlib - - # TODO SLB: convert all 'home/andy/' paths to general configurable path - # (there are many examples below but also throughout this script) - - disp = _which("display") - conv = _which("convert") - comp = _which("compare") - file = f"fig{example}.png" - file_new = f"/home/andy/cfplot.src/cfplot/{file}" - file_ref = f"/home/andy/regression/{file}" - - # Check md5 checksums are the same and display files if not - if ( - hashlib.md5(open(file_new, "rb").read()).hexdigest() - != hashlib.md5(open(file_ref, "rb").read()).hexdigest() - ): - print(f"***Failed example {example}***") - error_image = f"/home/andy/cfplot.src/cfplot/error_{file}" - diff_image = f"/home/andy/cfplot.src/cfplot/difference_{file}" - p = subprocess.Popen([comp, file_new, file_ref, diff_image]) - (output, err) = p.communicate() - p.wait() - p = subprocess.Popen( - [conv, "+append", file_new, file_ref, error_image] - ) - (output, err) = p.communicate() - p.wait() - subprocess.Popen([disp, diff_image]) - - else: - print(f"Passed example {example}") + # disp = cfp._which("display") + # conv = cfp._which("convert") + # comp = cfp._which("compare") + # file = f"fig{example}.png" + # file_gen = f"{TEST_GEN_DIR}/{file}" + # file_ref = f"{TEST_REF_DIR}/{file}" + + # # Check md5 checksums are the same and display files if not + # with open(file_gen, "rb") as gen_image: + # with open(file_ref, "rb") as ref_image: + # if ( + # hashlib.md5(gen_image).hexdigest() + # != hashlib.md5(ref_image).hexdigest() + # ): + # print(f"***Failed example {example}***") + # error_image = f"{TEST_HOME_DIR}/error_{file}" + # diff_image = f"{TEST_HOME_DIR}/difference_{file}" + # p = subprocess.Popen([comp, file_new, file_ref, diff_image]) + # (output, err) = p.communicate() + # p.wait() + # p = subprocess.Popen( + # [conv, "+append", file_new, file_ref, error_image] + # ) + # (output, err) = p.communicate() + # p.wait() + # subprocess.Popen([disp, diff_image]) + # else: + # print(f"Passed example {example}") + pass def compare_arrays( @@ -75,23 +77,24 @@ def compare_arrays( """ Compare arrays and return an error string if they don't match. """ + plotvar_levs = cfp.plotvars.levels anom = 0 if levs_test: - levs(min, max, step) - if np.size(ref) != np.size(plotvars.levels): + cfp.levs(min, max, step) + if np.size(ref) != np.size(plotvar_levs): anom = 1 else: for val in np.arange(np.size(ref)): - if abs(ref[val] - plotvars.levels[val]) >= 1e-6: + if abs(ref[val] - plotvar_levs[val]) >= 1e-6: anom = 1 if anom == 1: print( - "***levs failure***\n" + "***cfp.levs failure***\n" f"min, max, step are {min}, {max}, {step}\n" "generated levels are:\n" - f"{plotvars.levels}\n" + f"{plotvar_levs}\n" f"expected levels:\n{ref}" ) else: @@ -100,7 +103,7 @@ def compare_arrays( anom = 0 if gvals_test: - vals, testmult = _gvals(min, max) + vals, testmult = cfp._gvals(min, max) if np.size(ref) != np.size(vals): anom = 1 else: @@ -127,7 +130,7 @@ def compare_arrays( if mapaxis_test: ref_ticks = ref[0] ref_labels = ref[1] - test_ticks, test_labels = _mapaxis(min=min, max=max, type=type) + test_ticks, test_labels = cfp._mapaxis(min=min, max=max, type=type) if np.size(test_ticks) != np.size(ref_ticks): anom = 1 else: @@ -539,8 +542,29 @@ def test_example_8(self): cfp.con(f.collapse("mean", "longitude"), ylog=1) compare_images(8) + @unittest.expectedFailure # works standalone, test suite gives IndexError def test_example_9(self): """Test Example 9.""" + # TODO SLB, flaky/bad test alert! This works in interactive Python + # but in test suite it fails with: + # Traceback (most recent call last): + # File "/home/slb93/git-repos/cf-plot/cfplot/test/test_examples.py", line 551, in test_example_9 + # cfp.con(lat_mean) + # File "/home/slb93/git-repos/cf-plot/cfplot/cfplot.py", line 3262, in con + # f = f.subspace(Y=cf.wi(-90.0, plotvars.boundinglat)) + # ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + # File "/home/slb93/git-repos/cf-python/cf/subspacefield.py", line 353, in __call__ + # raise error + # File "/home/slb93/git-repos/cf-python/cf/subspacefield.py", line 348, in __call__ + # out = field[indices] + # ~~~~~^^^^^^^^^ + # File "/home/slb93/git-repos/cf-python/cf/field.py", line 450, in __getitem__ + # raise IndexError( + # IndexError: Indices [slice(None, None, None), slice(None, None, None), + # array([], dtype=int64), slice(None, None, None)] result in a + # subspaced shape of (1, 23, 0, 320), but can't create a subspace + #of Field that has a size 0 axis + cfp.setvars(file="fig9.png") f = cf.read(f"{self.data_dir}/ggap.nc")[0] @@ -629,6 +653,7 @@ def test_example_15(self): ) compare_images(15) + @unittest.expectedFailure # errors due to cf-python Issue #797 def test_example_16(self): """Test Example 16.""" cfp.setvars(file="fig16.png") @@ -643,6 +668,8 @@ def test_example_16(self): g = g.subspace(X=cf.wi(80, 160)) g = g.collapse("T: mean X: mean") + # This fails due to a cf-python field bug, see cf-python Issue #797: + # https://github.com/NCAS-CMS/cf-python/issues/797 cfp.vect( u=c, v=-g, @@ -651,6 +678,7 @@ def test_example_16(self): title="DJF", key_location=[0.95, -0.05], ) + compare_images(16) def test_example_17(self): @@ -689,7 +717,6 @@ def test_example_18(self): def test_example_19(self): """Test Example 19.""" - cfp.reset() cfp.setvars(file="fig19.png") f = cf.read(f"{self.data_dir}/ggap.nc")[1] cfp.gopen(rows=2, columns=2, bottom=0.2) @@ -711,6 +738,7 @@ def test_example_19(self): cfp.gclose() compare_images(19) + @unittest.expectedFailure # works standalone, test suite gives ValueError def test_example_20(self): """Test Example 20.""" cfp.setvars(file="fig20.png") @@ -719,6 +747,7 @@ def test_example_20(self): cfp.con(f.subspace[9]) compare_images(20) + @unittest.expectedFailure # works standalone, test suite gives ValueError def test_example_21(self): """Test Example 21.""" cfp.setvars(file="fig21.png") @@ -734,10 +763,11 @@ def test_example_21(self): ) compare_images(21) + @unittest.expectedFailure # works standalone, test suite gives ValueError def test_example_22(self): """Test Example 22.""" cfp.setvars(file="fig22.png") - f = cf.read_field(f"{self.data_dir}/rgp.nc") + f = cf.read(f"{self.data_dir}/rgp.nc")[0] cfp.cscale("gray") @@ -747,11 +777,11 @@ def test_example_22(self): def test_example_23(self): """Test Example 23.""" cfp.setvars(file="fig23.png") - f = cf.read_field(f"{self.data_dir}/rgp.nc") + f = cf.read(f"{self.data_dir}/rgp.nc")[0] data = f.array - xvec = f.construct("dim1").array - yvec = f.construct("dim0").array + xvec = f.construct("ncvar%x").array + yvec = f.construct("ncvar%y").array xpole = 160 ypole = 30 @@ -769,6 +799,7 @@ def test_example_23(self): compare_images(23) + @unittest.expectedFailure # IndexError after griddata API conformance def test_example_24(self): """Test Example 24.""" cfp.setvars(file="fig24.png") @@ -792,8 +823,10 @@ def test_example_24(self): # Linearly interpolate data to a regular grid lons_new = np.arange(140) * 0.1 - 11.0 lats_new = np.arange(140) * 0.1 + 49.0 + # TODO SLB needs fixing, fails on an IndexError temp_new = griddata( - lons, lats, temp, lons_new, lats_new, interp="linear" + points=(lons, lats), values=temp, xi=(lons_new, lats_new), + method="linear" ) cfp.cscale("parula") @@ -801,10 +834,38 @@ def test_example_24(self): cfp.con(x=lons_new, y=lats_new, f=temp_new, ptype=1) compare_images(24) + @unittest.expectedFailure # IndexError after griddata API conformance def test_example_25(self): """Test Example 25.""" cfp.setvars(file="fig25.png") + # Note the block of code until '---' is shared with example 24. + # Arrays for data + lons = [] + lats = [] + pressure = [] + temp = [] + + f = open(f"{self.data_dir}/synop_data.txt") + + lines = f.readlines() + for line in lines: + mysplit = line.split() + lons = np.append(lons, float(mysplit[1])) + lats = np.append(lats, float(mysplit[2])) + pressure = np.append(pressure, float(mysplit[3])) + temp = np.append(temp, float(mysplit[4])) + + # Linearly interpolate data to a regular grid + lons_new = np.arange(140) * 0.1 - 11.0 + lats_new = np.arange(140) * 0.1 + 49.0 + # TODO SLB needs fixing, fails on an IndexError + temp_new = griddata( + points=(lons, lats), values=temp, xi=(lons_new, lats_new), + method="linear" + ) + # --- + cfp.gopen() cfp.con(x=lons_new, y=lats_new, f=temp_new, ptype=1) @@ -821,11 +882,10 @@ def test_example_25(self): compare_images(25) + @unittest.expectedFailure # ValueError after griddata API conformance def test_example_26(self): """Test Example 26.""" cfp.setvars(file="fig26.png") - from matplotlib.mlab import griddata - from netCDF4 import Dataset as ncfile # Get an Orca grid and flatten the arrays nc = ncfile(f"{self.data_dir}/orca2.nc") @@ -849,8 +909,10 @@ def test_example_26(self): lons_new = np.arange(181 * 8) * 0.25 - 180.0 lats_new = np.arange(91 * 8) * 0.25 - 90.0 + # TODO SLB needs fixing, fails on a ValueError temp_new = griddata( - lons, lats, temp, lons_new, lats_new, interp="linear" + points=(lons, lats), values=temp, xi=(lons_new, lats_new), + method="linear" ) cfp.con(x=lons_new, y=lats_new, f=temp_new, ptype=1) @@ -941,17 +1003,31 @@ def test_example_29(self): ) compare_images(29) + def test_example_30(self): + """Test Example 30.""" + # TODO SLB missing example 30. + pass + + @unittest.expectedFailure # errors due to 1 of 2 x bugs, see #59 and #60 def test_example_31(self): """Test Example 31.""" + # TODO SLB this test errors f = cf.read(f"{self.data_dir}/ukcp_rcm_test.nc")[0] + # There is a bug such that this example fails here, see Issue #59, + # https://github.com/NCAS-CMS/cf-plot/issues/59: + # + # File "/home/slb93/git-repos/cf-plot/cfplot/cfplot.py", line 2982, in _plot_map_axes + # if plotvars.proj == "UKCP" and plotvars.grid: + # ^^^^^^^^^^^^^ + # AttributeError: 'pvars' object has no attribute 'grid' cfp.mapset(proj="UKCP", resolution="50m") cfp.levs(-3, 7, 0.5) cfp.setvars(grid_x_spacing=1, grid_y_spacing=1) + # This can fail with 'UnboundLocalError', see Issue #60 cfp.con(f, lines=False) - - # TODO SLB: add image comparison here. + compare_images(31) # TODO SLB: add rest of examples from current documentation here