Add support for overriding x tick with non arithmetic progression values #5262

Original file line number	Diff line number	Diff line change
Expand Up		@@ -451,9 +451,9 @@ def prep_ticks(ax, index, ax_type, props):
		tick0 = tickvalues[0]
		dticks = [
		round(tickvalues[i] - tickvalues[i - 1], 12)
	for i in range(1, len(tickvalues) - 1)
	for i in range(1, len(tickvalues))
		]
	if all([dticks[i] == dticks[i - 1] for i in range(1, len(dticks) - 1)]):
	if all([dticks[i] == dticks[i - 1] for i in range(1, len(dticks))]):
		dtick = tickvalues[1] - tickvalues[0]
		else:
		warnings.warn(
Expand All		@@ -463,6 +463,8 @@ def prep_ticks(ax, index, ax_type, props):
		raise TypeError
		except (IndexError, TypeError):
		axis_dict["nticks"] = props["axes"][index]["nticks"]
	if props["axes"][index]["tickvalues"] is not None:
	axis_dict["tickvals"] = props["axes"][index]["tickvalues"]
		else:
		axis_dict["tick0"] = tick0
		axis_dict["dtick"] = dtick
Expand Down Expand Up		@@ -511,6 +513,15 @@ def prep_ticks(ax, index, ax_type, props):

		if formatter == "LogFormatterMathtext":
		axis_dict["exponentformat"] = "e"
	elif (
	formatter == "FuncFormatter" and props["axes"][index]["tickformat"] is not None
	):
	to_remove = ["dticktickmode"]
	for key in to_remove:
	if key in axis_dict:
	axis_dict.pop(key)
	axis_dict["ticktext"] = props["axes"][index]["tickformat"]
	axis_dict["tickvals"] = props["axes"][index]["tickvalues"]
		return axis_dict


Expand Down

25 changes: 25 additions & 0 deletions plotly/matplotlylib/tests/test_renderer.py

Show comments View file Open in desktop

Original file line number	Diff line number	Diff line change
Expand Up		@@ -84,3 +84,28 @@ def test_multiple_traces_native_legend():
		assert plotly_fig.data[0].mode == "lines"
		assert plotly_fig.data[1].mode == "markers"
		assert plotly_fig.data[2].mode == "lines+markers"



	def test_non_arithmetic_progression_xtickvals():
	xticks = [0.01, 0.53, 0.75]
	plt.figure()
	plt.plot([0, 1], [0, 1])
	plt.xticks(xticks)

	plotly_fig = tls.mpl_to_plotly(plt.gcf())

	assert plotly_fig.layout.xaxis.tickvals == tuple(xticks)


	def test_non_arithmetic_progression_xticktext():
	xtickvals = [0.01, 0.53, 0.75]
	xticktext = ["Baseline", "param = 1", "param = 2"]
	plt.figure()
	plt.plot([0, 1], [0, 1])
	plt.xticks(xtickvals, xticktext)

	plotly_fig = tls.mpl_to_plotly(plt.gcf())

	assert plotly_fig.layout.xaxis.tickvals == tuple(xtickvals)
	assert plotly_fig.layout.xaxis.ticktext == tuple(xticktext)

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