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examples: fix segfault on exit with python3
1 parent ef0383f commit b203af7

19 files changed

+193
-71
lines changed

‎examples/animation.cpp‎

Lines changed: 33 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o animation $(python-config --includes) animation.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include <cmath>
37
#include "../matplotlibcpp.h"
@@ -6,31 +10,34 @@ namespace plt = matplotlibcpp;
610

711
int main()
812
{
9-
int n = 1000;
10-
std::vector<double> x, y, z;
11-
12-
for(int i=0; i<n; i++) {
13-
x.push_back(i*i);
14-
y.push_back(sin(2*M_PI*i/360.0));
15-
z.push_back(log(i));
16-
17-
if (i % 10 == 0) {
18-
// Clear previous plot
19-
plt::clf();
20-
// Plot line from given x and y data. Color is selected automatically.
21-
plt::plot(x, y);
22-
// Plot a line whose name will show up as "log(x)" in the legend.
23-
plt::named_plot("log(x)", x, z);
24-
25-
// Set x-axis to interval [0,1000000]
26-
plt::xlim(0, n*n);
27-
28-
// Add graph title
29-
plt::title("Sample figure");
30-
// Enable legend.
31-
plt::legend();
32-
// Display plot continuously
33-
plt::pause(0.01);
34-
}
13+
int n = 1000;
14+
std::vector<double> x, y, z;
15+
16+
for(int i=0; i<n; i++) {
17+
x.push_back(i*i);
18+
y.push_back(sin(2*M_PI*i/360.0));
19+
z.push_back(log(i));
20+
21+
if (i % 10 == 0) {
22+
// Clear previous plot
23+
plt::clf();
24+
// Plot line from given x and y data. Color is selected automatically.
25+
plt::plot(x, y);
26+
// Plot a line whose name will show up as "log(x)" in the legend.
27+
plt::named_plot("log(x)", x, z);
28+
29+
// Set x-axis to interval [0,1000000]
30+
plt::xlim(0, n*n);
31+
32+
// Add graph title
33+
plt::title("Sample figure");
34+
// Enable legend.
35+
plt::legend();
36+
// Display plot continuously
37+
plt::pause(0.01);
3538
}
39+
}
40+
41+
plt::detail::_interpreter::kill();
42+
return 0;
3643
}

‎examples/bar.cpp‎

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o bar $(python-config --includes) bar.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26

37
#include <iostream>
@@ -14,5 +18,6 @@ int main(int argc, char **argv) {
1418
plt::bar(test_data);
1519
plt::show();
1620

21+
plt::detail::_interpreter::kill();
1722
return (0);
1823
}

‎examples/basic.cpp‎

Lines changed: 10 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,11 +1,16 @@
1+
//
2+
// g++ -g -Wall -o basic -I/usr/include/python3.9 basic.cpp -lpython3.9
3+
// g++ -g -Wall -o basic $(python-config --includes) basic.cpp $(python-config --ldflags --embed)
4+
//
5+
16
#define _USE_MATH_DEFINES
27
#include <iostream>
38
#include <cmath>
49
#include "../matplotlibcpp.h"
510

611
namespace plt = matplotlibcpp;
712

8-
int main()
13+
int main()
914
{
1015
// Prepare data.
1116
int n = 5000;
@@ -15,7 +20,7 @@ int main()
1520
y.at(i) = sin(2*M_PI*i/360.0);
1621
z.at(i) = log(i);
1722
}
18-
23+
1924
// Set the size of output image = 1200x780 pixels
2025
plt::figure_size(1200, 780);
2126

@@ -41,4 +46,7 @@ int main()
4146
const char* filename = "./basic.png";
4247
std::cout << "Saving result to " << filename << std::endl;;
4348
plt::save(filename);
49+
50+
plt::detail::_interpreter::kill();
51+
return 0;
4452
}

‎examples/basic.png‎

68 Bytes
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‎examples/colorbar.cpp‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o colorbar $(python-config --includes) colorbar.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include <cmath>
37
#include <iostream>
@@ -29,4 +33,7 @@ int main()
2933
plt::show();
3034
plt::close();
3135
Py_DECREF(mat);
36+
37+
plt::detail::_interpreter::kill();
38+
return 0;
3239
}

‎examples/contour.cpp‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o contour $(python-config --includes) contour.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#include "../matplotlibcpp.h"
26

37
#include <cmath>
@@ -21,4 +25,7 @@ int main()
2125

2226
plt::contour(x, y, z);
2327
plt::show();
28+
29+
plt::detail::_interpreter::kill();
30+
return (0);
2431
}

‎examples/fill.cpp‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o fill $(python-config --includes) fill.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include "../matplotlibcpp.h"
37
#include <cmath>
@@ -32,4 +36,7 @@ int main() {
3236
plt::fill(x1, y1, {});
3337
}
3438
plt::show();
39+
40+
plt::detail::_interpreter::kill();
41+
return (0);
3542
}

‎examples/fill_inbetween.cpp‎

Lines changed: 23 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o fill_inbetween $(python-config --includes) fill_inbetween.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include "../matplotlibcpp.h"
37
#include <cmath>
@@ -7,22 +11,25 @@ using namespace std;
711
namespace plt = matplotlibcpp;
812

913
int main() {
10-
// Prepare data.
11-
int n = 5000;
12-
std::vector<double> x(n), y(n), z(n), w(n, 2);
13-
for (int i = 0; i < n; ++i) {
14-
x.at(i) = i * i;
15-
y.at(i) = sin(2 * M_PI * i / 360.0);
16-
z.at(i) = log(i);
17-
}
14+
// Prepare data.
15+
int n = 5000;
16+
std::vector<double> x(n), y(n), z(n), w(n, 2);
17+
for (int i = 0; i < n; ++i) {
18+
x.at(i) = i * i;
19+
y.at(i) = sin(2 * M_PI * i / 360.0);
20+
z.at(i) = log(i);
21+
}
22+
23+
// Prepare keywords to pass to PolyCollection. See
24+
// https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.fill_between.html
25+
std::map<string, string> keywords;
26+
keywords["alpha"] = "0.4";
27+
keywords["color"] = "grey";
28+
keywords["hatch"] = "-";
1829

19-
// Prepare keywords to pass to PolyCollection. See
20-
// https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.fill_between.html
21-
std::map<string, string> keywords;
22-
keywords["alpha"] = "0.4";
23-
keywords["color"] = "grey";
24-
keywords["hatch"] = "-";
30+
plt::fill_between(x, y, z, keywords);
31+
plt::show();
2532

26-
plt::fill_between(x, y, z, keywords);
27-
plt::show();
33+
plt::detail::_interpreter::kill();
34+
return (0);
2835
}

‎examples/imshow.cpp‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o imshow $(python-config --includes) imshow.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include <cmath>
37
#include <iostream>
@@ -26,4 +30,7 @@ int main()
2630
// Show plots
2731
plt::save("imshow.png");
2832
std::cout << "Result saved to 'imshow.png'.\n";
33+
34+
plt::detail::_interpreter::kill();
35+
return 0;
2936
}

‎examples/lines3d.cpp‎

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,7 @@
1+
//
2+
// g++ -g -Wall -o lines3d $(python-config --includes) lines3d.cpp $(python-config --ldflags --embed)
3+
//
4+
15
#define _USE_MATH_DEFINES
26
#include "../matplotlibcpp.h"
37
#include <cmath>
@@ -9,7 +13,7 @@ int main()
913
std::vector<double> x, y, z;
1014
double theta, r;
1115
double z_inc = 4.0/99.0; double theta_inc = (8.0 * M_PI)/99.0;
12-
16+
1317
for (double i = 0; i < 100; i += 1) {
1418
theta = -4.0 * M_PI + theta_inc*i;
1519
z.push_back(-2.0 + z_inc*i);
@@ -27,4 +31,7 @@ int main()
2731
plt::set_zlabel("z label"); // set_zlabel rather than just zlabel, in accordance with the Axes3D method
2832
plt::legend();
2933
plt::show();
34+
35+
plt::detail::_interpreter::kill();
36+
return 0;
3037
}

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