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Cómo construir una matriz json 2d por qjsonarry en qt5

necesito construir una matriz json como

 var data1 = [ [3, 0], [15, 90], [18, 180], [15, 270], [12, 0], [9, 120], [10, 90], [18, 30], [20, 150], [21, 120], [18, 100], [15, 240], [12, 270], [9, 120], [10, 90], [18, 30], [3, 150], [15, 120], [18, 100], [15, 240], [12, 270], [9, 120], [10, 90], [18, 30], ];

Puedo construir una matriz de una línea simple usando QJsonArray, así

 QString CTestDataModel::ParseToJsonArray(std::vector<double> input) { QJsonArray jsonArray; QJsonDocument jsonDoc; QByteArray byteArray; if (input.empty()) { return QString(" "); } for (double num:input) { jsonArray.append(num); } jsonDoc.setArray(jsonArray); byteArray = jsonDoc.toJson(QJsonDocument::Compact); QString jsonResult(byteArray); return jsonResult; }

el resultado sera como

 var data1= [2500, 1800, 1200, 1600, 3000, 4000, 3500, 2200, 2500, 1800, 1200, 1600, 3000, 4200, 3500, 2200, 2500, 1800, 1200, 1600, 3000, 4000, 3500, 2200];

pero no es lo que quiero, ¿cómo puedo construir una matriz 2d js usando QJsonArray en at5?

about 4 years ago · Juan Pablo Isaza
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