Examples/Python-examples.md

+# Simple plot of 1D data
+The example below demonstrates how to plot 1D data, precisely:
+```
+datadim                   1   # 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
+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/scratch/barrus-gw/h1d/lambda006.wtxt"
+data = WData.load(fwtxt)
+
+fig, ax = plt.subplots()
+ax.plot(data.xyz[0], data.rho_a[-1]) # plot last frame [-1]
+
+ax.set(xlabel='x', ylabel=r'$n_{\uparrow}(x)$')
+ax.grid()
+
+fig.savefig("rho_a.png")
+plt.show()
+```
+The result of this example:
+![rho_a](uploads/e6ca81cfb4602e23d338ddc969af1c42/rho_a.png)
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