无法使用PYFIT打印.fit文件

Question

在Fits文件中，我有三个列，分别称为J、H和K，我想用PYFITS分别在x和y轴上绘制J-H和H-K之间的关系。 我怎么做这个？

Answer 1

这是一个非常普遍和基本的问题。在

首先需要打开FITS文件并打印，下面是一个示例程序：

import pyfits
import matplotlib.pyplot as plt

# Load the FITS file into the program
hdulist = pyfits.open('Your FITS file name here')

# Load table data as tbdata
tbdata = hdulist[1].data

fields = ['J','H','K'] #This contains your column names
var = dict((f, tbdata.field(f)) for f in fields) #Creating a dictionary that contains
                                                 #variable names J,H,K

#Now to call column J,H and K just use
J = var['J']   
H = var['H']
K = var['K']

#To plot J Vs H and H Vs K and so on
plt.plot(J,H,'r')
plt.title('Your plot title here')
plt.show()