57 lines
1.3 KiB
Python
Executable File
57 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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parser = argparse.ArgumentParser(description="Dump Example Images")
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parser.add_argument("-c", "--camera", help="camera channel name", default=None)
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parser.add_argument("-i", "--input", help="SwissFEL data file", default=None)
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parser.add_argument("-o", "--output", help="example images as numpy dump", default="example_images.npy")
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parser.add_argument("-n", "--nimages", help="number of images", type=int, default=1000)
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clargs = parser.parse_args()
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import numpy as np
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from sfdata import SFDataFiles
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FPIC = ":FPICTURE"
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def main(fn_input, fn_output, camera, nimages):
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if fn_input is None:
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imgs = mk_rand(nimages)
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else:
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imgs = mk_real(fn_input, camera, nimages)
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print("Writing to:", fn_output)
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np.save(fn_output, imgs)
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def mk_rand(n):
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print("No input file specified, will write random data")
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return np.random.random((n, 100, 100))
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def mk_real(fn, ch, n):
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ch = harmonize_channel(ch)
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with SFDataFiles(fn) as f:
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imgs = f[ch][:n]
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nreal = len(imgs)
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if nreal != n:
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print(f"Warning: Got only {nreal} images from channel {ch} in {fn}")
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return imgs
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def harmonize_channel(ch):
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if not ch.endswith(FPIC):
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ch += FPIC
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return ch
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if __name__ == "__main__":
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main(clargs.input, clargs.output, clargs.camera, clargs.nimages)
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