diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index b6575fd..5630096 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -53,14 +53,26 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "00. Inbox/想要的鏡頭.md",
+                "file": "04. Programming/Python/tkinter.md",
                 "mode": "preview",
                 "source": true
               }
             }
+          },
+          {
+            "id": "7f135903a7f5dcc6",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "04. Programming/Python/matplotlib.md",
+                "mode": "source",
+                "source": true
+              }
+            }
           }
         ],
-        "currentTab": 3
+        "currentTab": 4
       }
     ],
     "direction": "vertical"
@@ -89,7 +101,7 @@
             "state": {
               "type": "search",
               "state": {
-                "query": "hugo",
+                "query": "matplot",
                 "matchingCase": false,
                 "explainSearch": false,
                 "collapseAll": false,
@@ -118,7 +130,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "00. Inbox/想要的鏡頭.md",
+                "file": "04. Programming/Python/matplotlib.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -143,7 +155,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "00. Inbox/想要的鏡頭.md"
+                "file": "04. Programming/Python/matplotlib.md"
               }
             }
           },
@@ -194,11 +206,13 @@
       "periodic-notes:Open today": false
     }
   },
-  "active": "d5d9792133b0bc1c",
+  "active": "7f135903a7f5dcc6",
   "lastOpenFiles": [
+    "04. Programming/Python/tkinter.md",
+    "04. Programming/Python/matplotlib.md",
+    "00. Inbox/想要的鏡頭.md",
     "00. Inbox/01. TODO.md",
     "01. 個人/01. Daily/2023-04-17(週一).md",
-    "00. Inbox/想要的鏡頭.md",
     "05. 資料收集/仰臥起坐.md",
     "attachments/Pasted image 20230418111538.png",
     "attachments/Pasted image 20230418111512.png",
@@ -228,7 +242,6 @@
     "01. 個人/01. Daily/2023/03/2023-04-06(週四).md",
     "01. 個人/01. Daily/2023/03/2023-03-09(週四).md",
     "未命名.canvas",
-    "01. 個人/01. Daily/2023/03/2023-03-08(週三).md",
     "attachments/android_mediacodec_life_cycle.png",
     "attachments/android_mediacodec_flow.png",
     "attachments/Pasted image 20230308105856.png",
diff --git a/04. Programming/Python/matplotlib.md b/04. Programming/Python/matplotlib.md
new file mode 100644
index 0000000..fd83c65
--- /dev/null
+++ b/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)
\ No newline at end of file
diff --git a/04. Programming/Python/tkinter.md b/04. Programming/Python/tkinter.md
index 2d5d15e..f97d8c5 100644
--- a/04. Programming/Python/tkinter.md	
+++ b/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):