[英]How can I convert matrix<double> to Matrix<float>?
I want to calculate something like: Matrix<float> * Matrix<double>
我想计算类似的东西:
Matrix<float> * Matrix<double>
the Matrix<float>
has about 6M*3 elements , how can I convert the Matrix<double>
to Matrix<float>
so that I can get a Matrix<float>
result. Matrix<float>
有大约6M * 3个元素,如何将Matrix<double>
转换为Matrix<float>
以便我可以获得Matrix<float>
结果。
You can convert your double matrix argument to a float matrix using the Map
function: 您可以使用
Map
函数将双矩阵参数转换为浮点矩阵:
Matrix<double> m1 = Matrix<double>.Build.Random(6000000,3);
Matrix<float> m2 = m1.Map(x => (float)x);
Or alternatively 或者
Matrix<float> m2 = m1.Map(Convert.ToSingle);
Here's how to convert an array of double to an array of float, then you just need to convert your matrix to array and vice versa 这里是如何将double数组转换为float数组,然后你只需要将矩阵转换为数组,反之亦然
public static float[][] Convert(double[][] mtx)
{
var floatMtx = new float[mtx.Length][];
for (int i = 0; i < mtx.Length; i++)
{
floatMtx[i] = new float[mtx[i].Length];
for (int j = 0; j < mtx[i].Length; j++)
floatMtx[i][j] = (float)mtx[i][j];
}
return floatMtx;
}
Or:
public static float[][] Convert(double[][] mtx)
{
return mtx.Select(i => i.Select(j => (float)j).ToArray()).ToArray();
}
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