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python Programming Glossary: np.savetxtNumpy loading csv TOO slow compared to Matlab http://stackoverflow.com/questions/18259393/numpy-loading-csv-too-slow-compared-to-matlab import numpy as np my_data np.random.rand 1500000 3 10 np.savetxt '. test.csv' my_data delimiter ' ' fmt ' .2f' And then I tried..
How to write a multidimensional array to a text file? http://stackoverflow.com/questions/3685265/how-to-write-a-multidimensional-array-to-a-text-file works fine import numpy as np x np.arange 20 .reshape 4 5 np.savetxt 'test.txt' x While the same thing would fail with a rather uninformative.. array import numpy as np x np.arange 200 .reshape 4 5 10 np.savetxt 'test.txt' x One workaround is just to break the 3D or greater.. 5 10 with file 'test.txt' 'w' as outfile for slice_2d in x np.savetxt outfile slice_2d However our goal is to be clearly human readable..
Python out of memory on large CSV file (numpy) http://stackoverflow.com/questions/8956832/python-out-of-memory-on-large-csv-file-numpy length 1e6 ncols 20 data np.random.random length ncols np.savetxt 'large_text_file.csv' data delimiter ' ' def iter_loadtxt filename..
Simple Digit Recognition OCR in OpenCV-Python http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python responses.reshape responses.size 1 print training complete np.savetxt 'generalsamples.data' samples np.savetxt 'generalresponses.data'.. training complete np.savetxt 'generalsamples.data' samples np.savetxt 'generalresponses.data' responses Now we enter in to training..
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