Add 3d example with no default colorbox

Author: alandefreitas

examples/data_distribution/scatter3/CMakeLists.txt

@@ -15,3 +15,6 @@ target_link_libraries(example_scatter3_5 PUBLIC matplot)
 
 add_executable(example_scatter3_6 scatter3_6.cpp)
 target_link_libraries(example_scatter3_6 PUBLIC matplot)
+
+add_executable(example_scatter3_7 scatter3_7.cpp)
+target_link_libraries(example_scatter3_7 PUBLIC matplot)

examples/data_distribution/scatter3/scatter3_7.cpp

@@ -0,0 +1,24 @@
+#include <matplot/matplot.h>
+#include <random>
+
+int main() {
+    using namespace matplot;
+
+    gcf()->quiet_mode(true);
+    auto z = linspace(0., 4. * pi, 250);
+    auto x = transform(z, [](double z) { return 2 * cos(z) + rand(0, 1); });
+    auto y = transform(z, [](double z) { return 2 * sin(z) + rand(0, 1); });
+
+    std::vector<double> sizes(x.size(), 5);
+    std::vector<double> colors(x.size() / 2, 1);
+    std::fill_n(std::back_inserter(colors), x.size() / 2, 2);
+
+    scatter3(x, y, z, sizes, colors, "filled");
+    colormap(palette::paired());
+
+    gca()->visible(false);
+    view(-30, 10);
+
+    show();
+    return 0;
+}