René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"plt::plot_surface(x, y, z);","articleBody":"my environment: \r\nvisual studio2022 use qt to draw image by matplotlibcpp, and i can draw all images in your https://github.com/Cryoris/matplotlib-cpp/readme.md except this one:\r\n\r\n```\r\n#include \"../matplotlibcpp.h\"\r\n\r\nnamespace plt = matplotlibcpp;\r\n\r\nint main()\r\n{\r\n    std::vector\u003cstd::vector\u003cdouble\u003e\u003e x, y, z;\r\n    for (double i = -5; i \u003c= 5;  i += 0.25) {\r\n        std::vector\u003cdouble\u003e x_row, y_row, z_row;\r\n        for (double j = -5; j \u003c= 5; j += 0.25) {\r\n            x_row.push_back(i);\r\n            y_row.push_back(j);\r\n            z_row.push_back(::std::sin(::std::hypot(i, j)));\r\n        }\r\n        x.push_back(x_row);\r\n        y.push_back(y_row);\r\n        z.push_back(z_row);\r\n    }\r\n\r\n    plt::plot_surface(x, y, z);\r\n    plt::show();\r\n}\r\n```\r\n\r\nthe error is said there is a  not processed error.\r\nplease answer me , thakns \r\n\r\n","author":{"url":"https://github.com/yingma111","@type":"Person","name":"yingma111"},"datePublished":"2023-09-14T11:11:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/8/matplotlib-cpp/issues/8"}