Update axes_type.cpp

The plot can inherit properties of a heat map and become reversed in Y-axis and have the minor_grid enabled as proposed in the issue #110 . Adding these 2 lines to each plot function solves the issue, but it is a very bad fix in my opinion. Ideally, every class should have a feature where its default settings are reset.

Author: edvinsmineikis

source/matplot/core/axes_type.cpp

@@ -2318,6 +2318,8 @@ namespace matplot {
     line_handle axes_type::plot(const std::vector<double> &x,
                                 const std::vector<double> &y,
                                 std::string_view line_spec) {
+        this->y_axis().reverse(false);
+        this->minor_grid(false);
         axes_silencer s{this};
         line_handle l = std::make_shared<class line>(this, x, y, line_spec);
         this->emplace_object(l);
@@ -2326,6 +2328,8 @@ namespace matplot {
 
     line_handle axes_type::plot(const std::vector<double> &y,
                                 std::string_view line_spec) {
+        this->y_axis().reverse(false);
+        this->minor_grid(false);
         axes_silencer s{this};
         line_handle l = std::make_shared<class line>(this, y, line_spec);
         this->emplace_object(l);
@@ -5416,4 +5420,4 @@ namespace matplot {
         parent_->backend_->draw_path(cx,cy,color);
     }
 
-} // namespace matplot
+} // namespace matplot