Error while loading saved .npy in python.

[asafben]

Error while loading saved .npy in python.

[rogersce]

Trying to directly load and save vectors of vectors isn't going to work -- the data isn't laid out contiguously in memory.

Please take a look at issue #20 for loading 2D data from file, into a vector of vectors.

To save a vector of vectors, you first need to copy it to a contiguous block of memory, e.g.

//data is a std::vector<std::vector<double>>. Each sub-vector should have the same size.
size_t N = data.size();
size_t M = data[0].size();

std::vector<double> raw(N*M);

for(int row = 0;row < N; row++) {
   for(int col = 0;col < M; col++) {
      raw[row*M+col] = data[row][col];
   }
}

cnpy::npy_save("arr1.npy",&raw[0],{N,M},"w");

[chraibi]

Please post a complete working example.

[asafben]

Excellent! It was very helpful, thank you.