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Commit c04f055f authored by Shuai Feng's avatar Shuai Feng
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add example

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%% Cell type:markdown id:ba724066 tags:
# 三维数据立方模拟（`cube3d`）
%% Cell type:code id:8b12b69e tags:
``` python
import sys
sys.path.append("..")
from csst_ifs_gehong import spec1d as s
from csst_ifs_gehong import map2d as m
from csst_ifs_gehong import cube3d as b
from csst_ifs_gehong import config as c
import numpy as np
import matplotlib.pyplot as plt
```
%% Cell type:markdown id:8d20f84d tags:
### 光谱格式配置项
`config`模块用来配置模拟光谱的格式，包括波长方向配置（波长范围、波长间隔）和空间方向配置（像素数、像素大小）。默认配置下模拟得到的三维数据立方可直接用于`csst-ifs-etc`的计算。
%% Cell type:code id:6603f0ff tags:
``` python
config = c.config(nx=30, ny=30, dpix=0.3)
```
%% Cell type:markdown id:9bf2f575 tags:
## 模拟TNG星系的积分视场光谱
%% Cell type:markdown id:3007c0f0 tags:
### 数据读取
%% Cell type:code id:37995ee9 tags:
``` python
from astropy.io import fits
hdulist = fits.open('Example.fits')
print(hdulist.info())
```
%% Output
Filename: Example.fits
No. Name Ver Type Cards Dimensions Format
0 PRIMARY 1 PrimaryHDU 4 ()
1 SURFACE_BRIGHT 1 ImageHDU 8 (100, 100) float64
2 AGE_STAR 1 ImageHDU 8 (100, 100) float64
3 FEH_STAR 1 ImageHDU 8 (100, 100) float64
4 E(B-V) 1 ImageHDU 8 (100, 100) float64
5 VEL_STAR 1 ImageHDU 8 (100, 100) float64
6 SIG_STAR 1 ImageHDU 8 (100, 100) float64
7 HA_FLUX 1 ImageHDU 8 (100, 100) float64
8 ZH_GAS 1 ImageHDU 8 (100, 100) float64
9 VEL_GAS 1 ImageHDU 8 (100, 100) float64
10 SIG_GAS 1 ImageHDU 8 (100, 100) float64
None
%% Cell type:markdown id:9d8d82de tags:
### 分别导入数据
%% Cell type:code id:10e00021 tags:
``` python
# 恒星星族相关Map
stellar_sbmap = m.Map2d(config)
stellar_sbmap.load_map(hdulist[1].data)
stellar_agemap = m.Map2d(config)
stellar_agemap.load_map(np.log10(hdulist[2].data*1e9))
stellar_fehmap = m.Map2d(config)
stellar_fehmap.load_map(hdulist[4].data)
stellar_velmap = m.Map2d(config)
stellar_velmap.load_map(hdulist[5].data)
stellar_vdispmap = m.Map2d(config)
stellar_vdispmap.load_map(hdulist[6].data)
# 气体相关Map
gas_hamap = m.Map2d(config)
gas_hamap.load_map(hdulist[7].data)
gas_zhmap = m.Map2d(config)
gas_zhmap.load_map(hdulist[8].data)
gas_velmap = m.Map2d(config)
gas_velmap.load_map(hdulist[9].data)
gas_vdispmap = m.Map2d(config)
gas_vdispmap.load_map(hdulist[10].data)
# 尘埃消光
ebvmap = m.Map2d(config)
ebvmap.load_map(hdulist[3].data)
stellarcontinuum = m.StellarPopulationMap(config, sbright = stellar_sbmap,
logage = stellar_agemap, feh = stellar_fehmap,
vel = stellar_velmap, vdisp = stellar_vdispmap,
ebv = ebvmap)
ionizedgas = m.IonizedGasMap(config, halpha = gas_hamap,
zh = gas_zhmap, vel = gas_velmap,
vdisp = gas_vdispmap, ebv = ebvmap)
```
%% Output
Notice: Spaxel with < 0 mag in the input ebv map will be automatically adjusted to 0 mag.
%% Cell type:markdown id:5b6fa973 tags:
### 配置cube3d的基本参数
模拟的数据立方类的形式进行操作（`cube3d.Cube3D`）。在开始模拟之前需先对模拟参数进行配置，包括数据立方的格式`config`，恒星成分物理参数分布`stellar_map`和气体成分物理参数分布`gas_map`
%% Cell type:code id:9b0057d3 tags:
``` python
u = b.Cube3D(config, stellar_map = stellarcontinuum, gas_map = ionizedgas)
```
%% Cell type:markdown id:d377ed48 tags:
### 配置模拟光谱所需要的模板
包括恒星连续谱模板和电离气体发射线模板
%% Cell type:code id:61bc3c17 tags:
``` python
gas_tem = s.EmissionLineTemplate(config, model = 'hii')
stellar_tem = s.StellarContinuumTemplate(config)
```
%% Cell type:markdown id:018f8779 tags:
### 开始进行光谱模拟
%% Cell type:code id:e8b6943f tags:
``` python
u.make_cube(stellar_tem = stellar_tem, hii_tem = gas_tem)
```
%% Cell type:markdown id:d1a8443c tags:
### 展示模拟光谱
%% Cell type:code id:f4177775 tags:
``` python
x1, y1 = 14, 14
x2, y2 = 12, 12
plt.figure(figsize=(15,3.5))
plt.subplot(121)
plt.imshow(np.log10(np.mean(u.flux[:,:,(u.wave>4900)&(u.wave<5100)],axis=2)),cmap='gray_r')
plt.colorbar(label=r'$\log (10^{-17} erg/s/\AA/cm^2)$')
plt.scatter(x1,y1,marker='o',s=100,color='red',alpha=0.5)
plt.scatter(x2,y2,marker='o',s=100,color='blue',alpha=0.5)
plt.xticks([])
plt.yticks([])
plt.subplot(122)
idx=(u.wave>3800)&(u.wave<7000)
plt.plot(u.wave[idx],u.flux[x1,y1,:][idx],lw=2,color='red')
plt.plot(u.wave[idx],u.flux[x2,y2,:][idx],lw=2,color='blue')
plt.xlim(3800,7000)
plt.yscale('log')
plt.xlabel(r'$Wavelength(\AA)$')
plt.ylabel(r'$Flux (10^{-17} erg/s/\AA/cm^2)$')
plt.tight_layout()
plt.show()
```
%% Output
%% Cell type:markdown id:103590a5 tags:
### 数据立方存储
%% Cell type:code id:a36e8322 tags:
``` python
u.savefits('result.fits')
```
example/Example_Map2D.ipynb 0 → 100644
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example/Example_Spec1D.ipynb 0 → 100644
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