我正在尝试在 Python 中创建 FITS 文件,但在将 header 和 PrimaryHDU 一起编译时似乎遇到问题。
我做了一个简单的例子,它将给出我收到的错误:
import numpy as np
from astropy.io import fits
a = np.ones([5,5])
hdu = fits.PrimaryHDU(a)
hdr = fits.Header()
hdr['NPIX1'] = 60
hdr['NPIX2'] = 60
hdr['CRPIX1'] = 0
hdr['CRPIX2'] = 0
primary_hdu = fits.PrimaryHDU(header=hdr)
hdul = fits.HDUList([primary_hdu, hdu])
hdul.writeto('table4.fits')
运行此代码时,出现以下错误:
VerifyError: Verification reported errors: HDUList's element 1 is not an extension HDU. Note: astropy.io.fits uses zero-based indexing.
我看过一些帖子,声称这可能与导出时 PrimaryHDU 需要成为 HDUList 中的第一个有关,但查看我的代码,我相信我已经这样做了。
任何帮助将不胜感激,谢谢。
最佳答案
注意错误消息:
VerifyError: Verification reported errors: HDUList's element 1 is not an extension HDU. Note: astropy.io.fits uses zero-based indexing.
HDUList
中的第二项也是一个 PrimaryHDU
,它不是有效的扩展 HDU(Primary
) > 这里本质上意味着第一和唯一)。
将 HDU 设为 ImageHDU
,一切就会正常:
import numpy as np
from astropy.io import fits
a = np.ones([5,5])
hdu = fits.ImageHDU(a) # Don't use a `PrimaryHDU` here
hdr = fits.Header()
hdr['NPIX1'] = 60
hdr['NPIX2'] = 60
hdr['CRPIX1'] = 0
hdr['CRPIX2'] = 0
primary_hdu = fits.PrimaryHDU(header=hdr)
hdul = fits.HDUList([primary_hdu, hdu])
hdul.writeto('table4.fits')
关于python - astropy 适合多个 header ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49999408/