Examples/Python-examples.md

+[[_TOC_]]
 # Simple plot of 1D data
 The example below demonstrates how to plot 1D data, precisely:
 ```
@@ -38,3 +39,46 @@ plt.show()
 ```
 The result of this example:
 ![rho_a](uploads/e6ca81cfb4602e23d338ddc969af1c42/rho_a.png)
+
+# Simple plot of 2D data
+The example below demonstrates how to plot 1D data, precisely:
+```
+datadim                   2   # dimension of block size: 1=nx, 2=nx*ny, 3=nx*ny*nz
+```
+The simple plotting script may look like:
+```python
+#!/usr/bin/python3
+
+# Before run:
+# Get wata lib:
+#   pip3 install wdata
+# (add -U if you want to update)
+# For more info see: 
+#   https://pypi.org/project/wdata/
+
+
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.cm as cm
+from wdata.io import WData, Var
+
+# I read data directly from dwarf,
+# Before running the script I mounted file system:
+# sshfs gabrielw@dwarf.if.pw.edu.pl:/home2/ /home/gabrielw/home2-dwarf/
+
+fwtxt="/home/gabrielw/home2-dwarf/archive/ntg/repository/atomicjj/CALC-BCS/td-round5-bcs/td1-bcs-z0.02-V0.6.wtxt"
+data = WData.load(fwtxt)
+
+ratio=data.Nxyz[0]/data.Nxyz[1]
+scale=2.0
+fig, ax = plt.subplots(figsize=(scale*ratio,1.2*scale))
+
+im = ax.imshow(np.transpose(data.rho_a[0]), interpolation='bilinear', extent=[0, data.Nxyz[0], 0, data.Nxyz[1]], aspect='auto')
+fig.colorbar(im, ax=ax, orientation="horizontal")
+
+plt.tight_layout()
+fig.savefig("rho_a.png")
+plt.show()
+```
+The result of this example:
+![rho_a](uploads/af555a49c8279e60d1ca1186af98ff9b/rho_a.png)
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