vault backup: 2023-04-21 15:18:45

.obsidian/workspace.json

@@ -53,14 +53,26 @@
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@@ -89,7 +101,7 @@
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+                "query": "matplot",
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@@ -118,7 +130,7 @@
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@@ -143,7 +155,7 @@
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@@ -194,11 +206,13 @@
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+    "04. Programming/Python/matplotlib.md",
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     "01. 個人/01. Daily/2023-04-17(週一).md",
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04. Programming/Python/matplotlib.md

@@ -0,0 +1,54 @@
+## 基本折線圖
+給2個list，一個 x，一個 y
+```python
+plt.clf() # 把圖清掉，變空白
+plt.plot(xList, yList)
+```
+
+## XY軸標籤
+```python
+plt.xlabel(
+    'Focus setting',   # 標籤
+    fontsize=15,       # 字型大小
+    labelpad=10,       # 標籤留白
+    color='red',       # 文字顏色
+    rotation=90,       # 文字旋轉角度
+    fontweight='bold', # 粗體
+)
+```
+
+## 不要顯示軸的刻線
+```python
+plt.gca().axes.get_xaxis().set_visible(False)
+```
+
+## 畫2條線
+```python
+plt.plot(x, y1, label='sine curve',color='b')
+plt.plot(x, y2, label='cosine curve',color='r')
+```
+
+## 畫大圖
+```python
+figure(figsize=(12, 9), dpi=120)
+```
+`12`跟`9`指的是英吋，`dpi`是每英吋幾個點，所以就是`12*120`跟`9*120`，也就是`1440x1080`。
+
+## 存檔
+```python
+plt.savefig(f'plot_{folder}.png')
+```
+
+## 註記（annotation）
+```python
+ax = plt.gca()
+ax.annotate(
+    'local max',                         # 註記文字
+    xy=(xmax, ymax),                     # 點的座標
+    xytext=(xmax, ymax + 5),             # 文字的座標
+    arrowprops=dict(                     # 箭頭的屬性
+            facecolor='black',           #      顏色：黑色
+            shrink=0.05),                # 
+)
+```
+官方說明：[matplotlib.axes.Axes.annotate — Matplotlib 3.7.1](https://matplotlib.org/stable/api/_as_gen/matplotlib.axes.Axes.annotate.html)

04. Programming/Python/tkinter.md

@@ -1,4 +1,4 @@
-### 把matplotlib包裝成獨立視窗
+### 把[[matplotlib]]包裝成獨立視窗
 ```python
 class Plot2D(Frame):
     def __init__(self, parent, dataCollector, **kwargs):