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python Programming Glossary: np.float64Python Opencv SolvePnP yields wrong translation vector http://stackoverflow.com/questions/14515200/python-opencv-solvepnp-yields-wrong-translation-vector val 0 np_corners_first np.asarray corners_first np.float64 count 1 term cv2.TERM_CRITERIA_EPS cv2.TERM_CRITERIA_COUNT.. dist_coefs.ravel cv2.destroyAllWindows np_xyz np.array xyz np.float64 .T #xyz list is from file. Not shown here for brevity camera_matrix2.. here for brevity camera_matrix2 np.asarray camera_matrix np.float64 np_dist_coefs np.asarray dist_coefs np.float64 found rvecs_new..
Simple wrapping of C code with cython http://stackoverflow.com/questions/3046305/simple-wrapping-of-c-code-with-cython from cc lib f.pyx f.c fc.o f.so N 3 a np.arange N dtype np.float64 b np.arange N dtype np.float64 z np.ones N dtype np.float64.. N 3 a np.arange N dtype np.float64 b np.arange N dtype np.float64 z np.ones N dtype np.float64 np.NaN fret f.fpy N a b z print.. b np.arange N dtype np.float64 z np.ones N dtype np.float64 np.NaN fret f.fpy N a b z print fpy fc z z # cat cc lib..
RGB to HSV conversion using PIL http://stackoverflow.com/questions/4554627/rgb-to-hsv-conversion-using-pil
Is it possible to specify your own distance function using Scikits.Learn K-Means Clustering? http://stackoverflow.com/questions/5529625/is-it-possible-to-specify-your-own-distance-function-using-scikits-learn-k-means 0 return cdist X Y kwargs d np.empty X.shape 0 Y.shape 0 np.float64 if sxy 2 for j x in enumerate X d j cdist x.todense Y kwargs..
numpy float: 10x slower than builtin in arithmetic operations? http://stackoverflow.com/questions/5956783/numpy-float-10x-slower-than-builtin-in-arithmetic-operations of the following lines is uncommented before execution #s np.float64 1 #s np.float32 1 #s 1.0 for i in range 10000000 s s 8 s 2399232.. of the following lines is uncommented before execution #s np.float64 1 #s np.float32 1 #s 1.0 for i in range 10000000 s s 8 s 2399232.. datetime import numpy as np START_TIME datetime.now s np.float64 1 for i in range 10000000 s float s s s 8 s 2399232 s np.float64..
Convert structured array to regular NumPy array http://stackoverflow.com/questions/5957380/convert-structured-array-to-regular-numpy-array of float64 f8 OK I tried the solution of Robert x.view np.float64 .reshape x.shape 1 and with a simple array it works perfectly... 1.0 4.0 2.0 1.0 dtype 'f0' ' f8' 'f1' ' f8' ~ 6 x.view np.float64 .reshape x.shape 1 array 1. 4. 2. 1. share improve this answer..
http://stackoverflow.com/questions/7799977/numpy-vs-cython-speed cython import numpy as np cimport numpy as np DTYPE np.float64 ctypedef np.float64_t DTYPE_t @cython.boundscheck False @cython.wraparound.. numpy as np cimport numpy as np DTYPE np.float64 ctypedef np.float64_t DTYPE_t @cython.boundscheck False @cython.wraparound False.. cython import numpy as np cimport numpy as np DTYPE np.float64 ctypedef np.float64_t DTYPE_t @cython.boundscheck False @cython.wraparound..
Converting numpy dtypes to native python types http://stackoverflow.com/questions/9452775/converting-numpy-dtypes-to-native-python-types np.asscalar np.float32 0 # type 'float' type np.asscalar np.float64 0 # type 'float' type np.asscalar np.uint32 0 # type 'long'..
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