Update app.py

app.py

@@ -1,7 +1,46 @@
 import gradio as gr
+import matplotlib.pyplot as plt
+from matplotlib.dates import date2num
+import numpy as np
+import io
+from PIL import Image
+import pandas as pd
 
-def greet(name):
-    return "Hello " + name + "!!"
+def countvis(fobj):
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+    df = pd.read_csv(fobj.name, sep=",")
+
+    dates = pd.to_datetime(df['date']).dt.date.tolist()
+    dates.sort()
+
+    # Get some auxilliary values
+    min_date = date2num(dates[0])
+    max_date = date2num(dates[-1])
+    days = int(max_date - min_date + 1)
+
+    # Initialize X and Y axes
+    x = np.arange(min_date, max_date + 1)
+    y = np.zeros(days)
+
+    # Iterate over dates, increase registration array
+    for date in dates:
+        index = int(date2num(date) - min_date)
+        y[index] += 1
+    y_sum = np.cumsum(y)
+
+    # Plot
+    plt.figure(dpi=200)
+    plt.plot_date(x, y_sum, xdate=True, ydate=False, ls='-', ms=0, color='#16171E')
+    plt.fill_between(x, 0, y_sum, facecolor='#D0F3FF')
+    plt.xticks(rotation=45)
+    plt.title('Cumulative Growth')
+
+    img_buf = io.BytesIO()
+    plt.savefig(img_buf, format='png')
+    im = Image.open(img_buf)
+
+    return im
+
+iface = gr.Interface(fn=countvis, inputs="file", outputs="image", allow_flagging="never")
+
+iface.launch(debug="True")