Pretty Confusion Matrix

🤔 Why pretty confusion matrix?

• We can make confusion matrix by using matplotlib.
• However it is not so pretty. I want to make confusion matrix prettier.
• Also, it is not easy to use. It is easy to draw confusion matrix.

Design Contributors

• 황동호(Dongho Hwang, hhdh12@naver.com)
• 김다한(Dahan Kim, dahan0811@gmail.com)

Code Contributors

• 고준서(Junseo Ko, Korkite, sta06167@naver.com)

📥 How to Install?

pip install prettycm

🗞 Full Code Example

from prettycm import confusion_matrix
from prettycm import palette

# Define confusion matrix 
cm = confusion_matrix([[400,0,0,0],[0,156,8,14],[0,18,131,30],[0,60,28,75]])
cm.set_classname(["Acute", "Non-resolving","Normal","Inactive"])
cm.set_title("Retinal Specialist2")

# Define Palette and draw
pset = palette()
pset.draw(cm, "place_to_save.png")

📦 Result of generated confusion matrix

📰 How to Use?

1. import package from prettycm

from prettycm import confusion_matrix
from prettycm import palette

2. build confusion matrix object

cm = confusion_matrix([[400,0,0,0],[0,156,8,14],[0,18,131,30],[0,60,28,75]])
cm.set_classname(["Acute", "Non-resolving","Normal","Inactive"]) # You can set the class name.
cm.set_title("Retinal Specialist2") # You can set the title.

• the input of the confusion_matrix must be two-dimensional array
• Python list or numpy array are both allowed
• You can set the name of the class and title.

3. define palette object

pset = palette(size=5, color="blue")

• size = the quality and size of output confusion matrix image
• color = the color of confusion matrix. (Now only blue is supported)
• Both parameters are not needed. size 5, color blue is defaultly set.

4. draw confusion matrix and save

pset.draw(confusion_matrix=cm, path="place_to_save.png")

• confusion_matrix: put confusion matrix object
• path: path to save

  Done

5. Generate Confusion matrix object by confusion_matrix_by_cal

• You can also generate confusion matrix object by y_pred, y_true.

6. Special Printer of Confusion Matrix

print(cm)

• When you print confusion_matrix object, than python will print the confusion matrix like below

7. Custom Your own color presets

from prettycm import palette
from prettycm.presets import preset_meta

class custom_green(preset_meta):
    def __init__(self, max_num):
        colors_rgb = [(204,244,202),(10,30,12)]
        super().__init__(max_num,colors_rgb)

pset = palette(size=5, color=custom_green)

• You can customize your own color preset
• Make your own class and inherit prettycm.presets.preset_meta
• And You have to write custom object same as this.
• colors_rgb consists of two ‘tuple’, which is brightest color RGB and darkest color RGB.
• Other colors will automatically be calculated by preset_meta object.

📆 Update Plans

1. More color presets

• Blue (👍 Best)
• Red
• Green
• Purple
• Custom Preset

2. Confusion matrix concat

• Concat two confusion matrix

3. Pallet Function

• Text Size control
• Cleaning the code

🙏🏻 PLEASE Contribute to this project

1. Pull requests after you modify code.
2. Make more color presets.