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Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>
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@ -16,6 +16,14 @@ Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
If you don't know what I am talking about, please read: [Python Interactive window](https://code.visualstudio.com/docs/python/jupyter-support-py) If you don't know what I am talking about, please read: [Python Interactive window](https://code.visualstudio.com/docs/python/jupyter-support-py)
## Executing a cell
In the cell mode (# %%) you can use
* SHIFT + ENTER to execute a cell or
* CTRL + ENTER.
The former moves the cursor into the next cell, while the later keeps the cursor that the original position.
## [Interactive plotting in # %% cells​](https://matplotlib.org/ipympl/) ## [Interactive plotting in # %% cells​](https://matplotlib.org/ipympl/)
```shell ```shell
@ -32,6 +40,7 @@ The first time we use this command, vs code will need to download a plugin).
Here an example: Here an example:
```python ```python
# %%
%matplotlib widget %matplotlib widget
import matplotlib.pyplot as plt import matplotlib.pyplot as plt
@ -49,6 +58,7 @@ Yes, mypy will give you an error and yes, you can not suppress it... but non you
First we plot something but keep the handle: First we plot something but keep the handle:
```python ```python
# %%
import matplotlib.pyplot as plt import matplotlib.pyplot as plt
import numpy as np import numpy as np
@ -59,6 +69,7 @@ line = plt.plot(np.sin(np.linspace(0, 20, 100)))
Then we can use to change the plot using the handle: Then we can use to change the plot using the handle:
```python ```python
# %%
line[0].remove() line[0].remove()
line = plt.plot(np.sin(5.0*np.linspace(0, 20, 100))) line = plt.plot(np.sin(5.0*np.linspace(0, 20, 100)))
``` ```
@ -66,6 +77,7 @@ line = plt.plot(np.sin(5.0*np.linspace(0, 20, 100)))
If you don't know the handle, you can retrieve it like this: If you don't know the handle, you can retrieve it like this:
```python ```python
# %%
handles = fig.gca().get_children() handles = fig.gca().get_children()
print(handles) print(handles)
``` ```
@ -74,18 +86,24 @@ print(handles)
[<matplotlib.lines.Line2D object at 0x7fe130f75310>, <matplotlib.spines.Spine object at 0x7fe130f1d710>, <matplotlib.spines.Spine object at 0x7fe130f1dcd0>, <matplotlib.spines.Spine object at 0x7fe130f1e210>, <matplotlib.spines.Spine object at 0x7fe130f1e750>, <matplotlib.axis.XAxis object at 0x7fe130f1ecd0>, <matplotlib.axis.YAxis object at 0x7fe1310b7350>, Text(0.5, 1.0, ''), Text(0.0, 1.0, ''), Text(1.0, 1.0, ''), <matplotlib.patches.Rectangle object at 0x7fe130f3cf10>] [<matplotlib.lines.Line2D object at 0x7fe130f75310>, <matplotlib.spines.Spine object at 0x7fe130f1d710>, <matplotlib.spines.Spine object at 0x7fe130f1dcd0>, <matplotlib.spines.Spine object at 0x7fe130f1e210>, <matplotlib.spines.Spine object at 0x7fe130f1e750>, <matplotlib.axis.XAxis object at 0x7fe130f1ecd0>, <matplotlib.axis.YAxis object at 0x7fe1310b7350>, Text(0.5, 1.0, ''), Text(0.0, 1.0, ''), Text(1.0, 1.0, ''), <matplotlib.patches.Rectangle object at 0x7fe130f3cf10>]
``` ```
This allows us to do this:
```python
# %%
fig.gca().get_children()[0].remove()
```
### Re-Plotting
You can use You can use
```python ```python
# %%
display(fig) display(fig)
``` ```
for replotting the plot. However you will get a message from VS Code that display is not defined. It is defined but it doesn't know it. for replotting the plot. However you will get a message from VS Code that display is not defined. It is defined but it doesn't know it.
This allows us to do this:
```python
fig.gca().get_children()[0].remove()
```