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Small fixes to episode 7 #264

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Merged
ShebMichel merged 5 commits into from
Dec 12, 2025
Merged

Small fixes to episode 7 #264

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453f76b
Joining python blocks in exercise
abostroem Dec 11, 2025
df581f0
adding key to to_hdf call
abostroem Dec 11, 2025
776c78c
fixing output of np.sum
abostroem Dec 11, 2025
d72df41
making latex strings for axis labels raw strings
abostroem Dec 11, 2025
556aa7d
adding key to to_hdf call
abostroem Dec 11, 2025
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16 changes: 7 additions & 9 deletions episodes/07-photo.md
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Original file line number Diff line number Diff line change
Expand Up @@ -468,9 +468,7 @@ defined, to verify that the results are as expected.
```python
test_points = [(0.4, 20),
(0.4, 16)]
```

```python
test_inside_mask = polygon.contains_points(test_points)
test_inside_mask
```
Expand Down Expand Up @@ -511,7 +509,7 @@ Here is how we can save it in an HDF5 file.

```python
filename = 'gd1_data.hdf'
loop_df.to_hdf(filename, 'loop_df')
loop_df.to_hdf(filename, key='loop_df')
```

## Selecting based on photometry
Expand Down Expand Up @@ -568,7 +566,7 @@ inside_mask.sum()
```

```output
486
np.int64(486)
```

:::::::::::::::::::::::::
Expand Down Expand Up @@ -612,8 +610,8 @@ x = winner_df['phi1']
y = winner_df['phi2']
plt.plot(x, y, 'ko', markersize=0.7, alpha=0.9)

plt.xlabel('$\phi_1$ [deg]')
plt.ylabel('$\phi_2$ [deg]')
plt.xlabel(r'$\phi_1$ [deg]')
plt.ylabel(r'$\phi_2$ [deg]')
plt.title('Proper motion + photometry selection', fontsize='medium')

plt.axis('equal');
Expand Down Expand Up @@ -650,8 +648,8 @@ def plot_cmd_selection(df):

plt.plot(x, y, 'ko', markersize=0.7, alpha=0.9)

plt.xlabel('$\phi_1$ [deg]')
plt.ylabel('$\phi_2$ [deg]')
plt.xlabel(r'$\phi_1$ [deg]')
plt.ylabel(r'$\phi_2$ [deg]')
plt.title('Proper motion + photometry selection', fontsize='medium')

plt.axis('equal')
Expand All @@ -676,7 +674,7 @@ Finally, we will write the selected stars to a file.

```python
filename = 'gd1_data.hdf'
winner_df.to_hdf(filename, 'winner_df')
winner_df.to_hdf(filename, key='winner_df')
```

```python
Expand Down