Difference between revisions of "OpenCV/WishList/IO/WriteMatrix"
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Daviddoria (Talk | contribs) (Created page with '==WriteMatrix.cxx== <source lang="cpp"> #include "cv.h" #include "opencv2/highgui/highgui.hpp" #include <iostream> int main(int argc, char*argv[]) { cv::Mat myMatrix(3,3,CV_3…') |
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| + | OpenCV Error: Parsing error (test.mat(0): Valid XML should start with '<?xml ...?>') in icvXMLParse, file /home/doriad/src/OpenCV/modules/core/src/persistence.cpp, line 2136 | ||
| + | terminate called after throwing an instance of 'cv::Exception' | ||
| + | what(): /home/doriad/src/OpenCV/modules/core/src/persistence.cpp:2136: error: (-212) test.mat(0): Valid XML should start with '<?xml ...?>' in function icvXMLParse | ||
| + | |||
==WriteMatrix.cxx== | ==WriteMatrix.cxx== | ||
<source lang="cpp"> | <source lang="cpp"> | ||
#include "cv.h" | #include "cv.h" | ||
#include "opencv2/highgui/highgui.hpp" | #include "opencv2/highgui/highgui.hpp" | ||
| + | #include "opencv2/core/core.hpp" | ||
#include <iostream> | #include <iostream> | ||
| Line 8: | Line 13: | ||
int main(int argc, char*argv[]) | int main(int argc, char*argv[]) | ||
{ | { | ||
| − | cv::Mat myMatrix(3,3, | + | // Create a matrix |
| + | cv::Mat myMatrix(3,3,CV_32FC1); | ||
std::cout << "Input:" << std::endl; | std::cout << "Input:" << std::endl; | ||
for(unsigned int i = 0; i < 3; i++) | for(unsigned int i = 0; i < 3; i++) | ||
| Line 14: | Line 20: | ||
for(unsigned int j = 0; j < 3; j++) | for(unsigned int j = 0; j < 3; j++) | ||
{ | { | ||
| − | + | myMatrix.at<float>(i,j) = 2.1; | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | myMatrix.at< | + | |
} | } | ||
} | } | ||
std::cout << myMatrix << std::endl; | std::cout << myMatrix << std::endl; | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | std::cout << | + | // Write the matrix to a file |
| + | cv::FileStorage fsout("test.yml", cv::FileStorage::WRITE); | ||
| + | fsout << "myMatrix" << myMatrix; | ||
| + | |||
| + | // Read the file back in to test that it was written correctly | ||
| + | cv::Mat myMatrix2(3,3,CV_32FC1); | ||
| + | cv::FileStorage fsin("test.yml", cv::FileStorage::READ); | ||
| + | fsin["myMatrix"] >> myMatrix2; | ||
| + | |||
| + | std::cout << myMatrix2 << std::endl; | ||
return 0; | return 0; | ||
} | } | ||
| + | |||
| Line 47: | Line 55: | ||
ADD_EXECUTABLE(WriteMatrix WriteMatrix.cxx) | ADD_EXECUTABLE(WriteMatrix WriteMatrix.cxx) | ||
| − | TARGET_LINK_LIBRARIES(WriteMatrix | + | TARGET_LINK_LIBRARIES(WriteMatrix ${OpenCV_LIBS}) |
| − | + | ||
| − | + | ||
| − | ) | + | |
</source> | </source> | ||
Latest revision as of 11:25, 20 September 2011
OpenCV Error: Parsing error (test.mat(0): Valid XML should start with '<?xml ...?>') in icvXMLParse, file /home/doriad/src/OpenCV/modules/core/src/persistence.cpp, line 2136 terminate called after throwing an instance of 'cv::Exception'
what(): /home/doriad/src/OpenCV/modules/core/src/persistence.cpp:2136: error: (-212) test.mat(0): Valid XML should start with '<?xml ...?>' in function icvXMLParse
WriteMatrix.cxx
#include "cv.h" #include "opencv2/highgui/highgui.hpp" #include "opencv2/core/core.hpp" #include <iostream> int main(int argc, char*argv[]) { // Create a matrix cv::Mat myMatrix(3,3,CV_32FC1); std::cout << "Input:" << std::endl; for(unsigned int i = 0; i < 3; i++) { for(unsigned int j = 0; j < 3; j++) { myMatrix.at<float>(i,j) = 2.1; } } std::cout << myMatrix << std::endl; // Write the matrix to a file cv::FileStorage fsout("test.yml", cv::FileStorage::WRITE); fsout << "myMatrix" << myMatrix; // Read the file back in to test that it was written correctly cv::Mat myMatrix2(3,3,CV_32FC1); cv::FileStorage fsin("test.yml", cv::FileStorage::READ); fsin["myMatrix"] >> myMatrix2; std::cout << myMatrix2 << std::endl; return 0; }
CMakeLists.txt
cmake_minimum_required(VERSION 2.6) PROJECT(WriteMatrix) FIND_PACKAGE(OpenCV REQUIRED ) INCLUDE_DIRECTORIES( ${OPENCV_INCLUDE_DIR} ) ADD_EXECUTABLE(WriteMatrix WriteMatrix.cxx) TARGET_LINK_LIBRARIES(WriteMatrix ${OpenCV_LIBS})
