fixed feature/error-bar on matplotlib==3.5.1

Author: soblin

CMakeLists.txt

@@ -25,7 +25,7 @@ if(NOT MATPLOTLIB_VERSION_CHECKING MATCHES 0)
   message(FATAL_ERROR
     "Could not check matplotlib.__version__")
 endif()
-message("Detected matplotlib version is ${MATPLOTLIB_VERSION}")
+message(STATUS "Detected matplotlib version is ${MATPLOTLIB_VERSION}")
 if(${MATPLOTLIB_VERSION} VERSION_LESS 3.4)
   message(WARNING "Detected matplotlib version is < 3.4.0")
   set(MATPLOTLIB_MINOR_VER_GTE_4 0)

gallery/mplot3d/errorbar3d.cpp

@@ -28,8 +28,8 @@ int main() {
       y(y_.begin(), y_.end()), z(z_.begin(), z_.end());
 
   const int estep = 15;
-  vector<int> i, zuplims, zlolims;
-  std::iota(i.begin(), i.end(), 0);
+  vector<int> i(t_.shape()[0]), zuplims, zlolims;
+  std::iota(i.begin(), i.end(), t_.shape()[0]);
   std::transform(i.begin(), i.end(), std::back_inserter(zuplims), [](int i) {
     return (i % 15 == 0) and ((i / estep) % 3 == 0);
   });

include/matplotlibcpp17/axes.h

@@ -365,13 +365,18 @@ pybind11::object Axes::contour(const pybind11::tuple &args,
 // errorbar
 pybind11::object Axes::errorbar(const pybind11::tuple &args,
                                 const pybind11::dict &kwargs) {
-  if (not projection_3d) {
+  if (projection_3d) {
+#if MATPLOTLIB_MINOR_VER_GTE_4
     pybind11::object obj = errorbar_attr(*args, **kwargs);
     return obj;
-  } else {
+#else
     ERROR_MSG("Call to errorbar with projection='3d' is invalid because "
               "matplotlib version is < 3.4.0");
     std::exit(0);
+#endif
+  } else {
+    pybind11::object obj = errorbar_attr(*args, **kwargs);
+    return obj;
   }
 }