Allow exporting from stocks/ca/hcorr (#1759)

* Add export to call_hcorr

* Add export_data to display_correlation

* Fix linting

* Fix test for yahoo_finance_view.display_correlation

Co-authored-by: Alex Ferrari <a.ferrari88@gmail.com>
Co-authored-by: didierlopes.eth <dro.lopes@campus.fct.unl.pt>

openbb_terminal/stocks/comparison_analysis/ca_controller.py

@@ -598,6 +598,7 @@ class ComparisonAnalysisController(BaseController):
                     similar_tickers=self.similar,
                     start=ns_parser.start.strftime("%Y-%m-%d"),
                     candle_type=ns_parser.type_candle,
+                    export=ns_parser.export,
                 )
             else:
                 console.print("Please make sure there are similar tickers selected. \n")

openbb_terminal/stocks/comparison_analysis/yahoo_finance_view.py

@@ -168,6 +168,7 @@ def display_correlation(
     start: str = (datetime.now() - timedelta(days=366)).strftime("%Y-%m-%d"),
     candle_type: str = "a",
     external_axes: Optional[List[plt.Axes]] = None,
+    export: str = "",
 ):
     """
     Correlation heatmap based on historical price comparison
@@ -183,6 +184,8 @@ def display_correlation(
         OHLCA column to use, by default "a" for Adjusted Close
     external_axes : Optional[List[plt.Axes]], optional
         External axes (1 axis is expected in the list), by default None
+    export : str, optional
+        Format to export correlation prices, by default ""
 
     """
     df_similar = yahoo_finance_model.get_historical(similar_tickers, start, candle_type)
@@ -227,4 +230,5 @@ def display_correlation(
     if not external_axes:
         theme.visualize_output()
 
+    export_data(export, os.path.dirname(os.path.abspath(__file__)), "hcorr", df_similar)
     console.print("")

tests/openbb_terminal/stocks/comparison_analysis/test_ca_controller.py

@@ -256,6 +256,7 @@ def test_call_func_expect_queue(expected_queue, queue, func):
                 similar_tickers=["MOCK_SIMILAR_1", "MOCK_SIMILAR_2"],
                 start="2020-12-01",
                 candle_type="h",
+                export="",
             ),
         ),
         (