8000 Added text and suptitle · mhirano/matplotlib-cpp@b60d338 · GitHub
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charasynlava
charasyn
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lava
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Added text and suptitle
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+71
-3
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2 files changed

+71
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‎examples/subplot.cpp

Lines changed: 31 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,31 @@
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#define _USE_MATH_DEFINES
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#include <cmath>
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#include "../matplotlibcpp.h"
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using namespace std;
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namespace plt = matplotlibcpp;
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int main()
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{
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// Prepare data
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int n = 500;
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std::vector<double> x(n), y(n), z(n), w(n,2);
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for(int i=0; i<n; ++i) {
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x.at(i) = i;
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y.at(i) = sin(2*M_PI*i/360.0);
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z.at(i) = 100.0 / i;
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}
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// Set the "super title"
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plt::suptitle("My plot");
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plt::subplot(1, 2, 1);
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plt::plot(x, y, "r-");
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plt::subplot(1, 2, 2);
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plt::plot(x, z, "k-");
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// Add some text to the plot
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plt::text(100, 90, "Hello!");
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// Show plots
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plt::show();
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}

‎matplotlibcpp.h

Lines changed: 40 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -62,6 +62,8 @@ struct _interpreter {
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PyObject *s_python_empty_tuple;
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PyObject *s_python_function_stem;
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PyObject *s_python_function_xkcd;
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PyObject *s_python_function_text;
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PyObject *s_python_function_suptitle;
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/* For now, _interpreter is implemented as a singleton since its currently not possible to have
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multiple independent embedded python interpreters without patching the python source code
@@ -165,6 +167,8 @@ struct _interpreter {
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s_python_function_tight_layout = PyObject_GetAttrString(pymod, "tight_layout");
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s_python_function_stem = PyObject_GetAttrString(pymod, "stem");
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s_python_function_xkcd = PyObject_GetAttrString(pymod, "xkcd");
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s_python_function_text = PyObject_GetAttrString(pymod, "text");
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s_python_function_suptitle = PyObject_GetAttrString(pymod, "suptitle");
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169173
if( !s_python_function_show
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|| !s_python_function_close
@@ -195,6 +199,8 @@ struct _interpreter {
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|| !s_python_function_tight_layout
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|| !s_python_function_stem
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|| !s_python_function_xkcd
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|| !s_python_function_text
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|| !s_python_function_suptitle
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) { throw std::runtime_error("Couldn't find required function!"); }
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if ( !PyFunction_Check(s_python_function_show)
@@ -225,6 +231,8 @@ struct _interpreter {
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|| !PyFunction_Check(s_python_function_errorbar)
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|| !PyFunction_Check(s_python_function_stem)
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|| !PyFunction_Check(s_python_function_xkcd)
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|| !PyFunction_Check(s_python_function_text)
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|| !PyFunction_Check(s_python_function_suptitle)
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) { throw std::runtime_error("Python object is unexpectedly not a PyFunction."); }
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s_python_empty_tuple = PyTuple_New(0);
@@ -788,6 +796,22 @@ bool stem(const std::vector<Numeric>& y, const std::string& format = "")
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return stem(x, y, format);
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}
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template<typename Numeric>
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void text(Numeric x, Numeric y, const std::string& format = "")
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{
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PyObject* args = PyTuple_New(3);
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PyTuple_SetItem(args, 0, PyFloat_FromDouble(x));
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PyTuple_SetItem(args, 1, PyFloat_FromDouble(y));
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PyTuple_SetItem(args, 2, PyString_FromString(format.c_str()));
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PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_text, args);
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if(!res) throw std::runtime_error("Call to text() failed.");
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Py_DECREF(args);
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Py_DECREF(res);
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}
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791815
inline void figure()
792816
{
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PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple);
@@ -807,7 +831,7 @@ inline void figure_size(size_t w, size_t h)
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PyDict_SetItemString(kwargs, "figsize", size);
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PyDict_SetItemString(kwargs, "dpi", PyLong_FromSize_t(dpi));
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810-
PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_figure,
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PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_figure,
811835
detail::_interpreter::get().s_python_empty_tuple, kwargs);
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813837
Py_DECREF(kwargs);
@@ -931,7 +955,7 @@ inline void xticks(const std::vector<Numeric> &ticks, const std::vector<std::str
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Py_DECREF(args);
932956
Py_DECREF(kwargs);
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if(!res) throw std::runtime_error("Call to xticks() failed");
934-
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935959
Py_DECREF(res);
936960
}
937961

@@ -978,7 +1002,7 @@ inline void yticks(const std::vector<Numeric> &ticks, const std::vector<std::str
9781002
Py_DECREF(args);
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Py_DECREF(kwargs);
9801004
if(!res) throw std::runtime_error("Call to yticks() failed");
981-
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9821006
Py_DECREF(res);
9831007
}
9841008

@@ -1016,6 +1040,19 @@ inline void title(const std::string &titlestr)
10161040
Py_DECREF(res);
10171041
}
10181042

1043+
inline void suptitle(const std::string &suptitlestr)
1044+
{
1045+
PyObject* pysuptitlestr = PyString_FromString(suptitlestr.c_str());
1046+
PyObject* args = PyTuple_New(1);
1047+
PyTuple_SetItem(args, 0, pysuptitlestr);
1048+
1049+
PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_suptitle, args);
1050+
if(!res) throw std::runtime_error("Call to suptitle() failed.");
1051+
1052+
Py_DECREF(args);
1053+
Py_DECREF(res);
1054+
}
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10191056
inline void axis(const std::string &axisstr)
10201057
{
10211058
PyObject* str = PyString_FromString(axisstr.c_str());

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