python: massive improvements to documentation

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>

.gitignore

@@ -28,3 +28,4 @@ localConfig.cmake
 python/**/*.cpp
 !python/doc
 python/doc/_build
+python/doc/Tutorials/__*

python/doc/Tutorials/Antenna_Tutorials.rst

@@ -0,0 +1,9 @@
+Antennas
+--------
+
+.. toctree::
+    :maxdepth: 1
+
+    Simple_Patch_Antenna
+    Helical_Antenna
+    Bent_Patch_Antenna

python/doc/Tutorials/Bent_Patch_Antenna.rst

@@ -0,0 +1,35 @@
+Bent Patch Antenna
+==================
+
+* Setup & Simulate a bent patch antenna using a cylindrical mesh
+
+Introduction
+-------------
+**This tutorial covers:**
+
+* Setup of a Bent Patch Antenna (see for comparison: :ref:`simple_patch_antenna`)
+* setup of a *cylindrical FDTD mesh*.
+* Calculate the S-Parameter and input impedance
+* Calculate far-field pattern 2D/3D
+
+
+Python Script
+-------------
+Get the latest version `from git <http://www.openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Bent_Patch_Antenna.m;hb=refs/heads/master>`_.
+
+.. include:: ./__Bent_Patch_Antenna.txt
+
+Images
+-------------
+.. figure:: images/Bent_Patch.png
+    :width: 49%
+    :alt: alternate text
+    
+    3D view of the Bent Patch Antenna (AppCSXCAD)
+
+.. figure:: images/Bent_Patch_Pattern.png
+    :width: 80%
+    :alt: Farfield pattern
+    
+    Farfield pattern on an xy- and xz-plane
+    

python/doc/Tutorials/Helical_Antenna.rst

@@ -0,0 +1,32 @@
+Helical Antenna
+===============
+
+Introduction
+-------------
+**This tutorial covers:**
+
+* setup of a helix using the wire primitive
+* setup a lumped feeding port (R_in = 120 Ohms)
+* adding a near-field to far-field (nf2ff) box using an efficient subsampling
+* calculate the S-Parameter of the antenna
+* calculate and plot the far-field pattern
+
+Python Script
+-------------
+Get the latest version `from git <http://www.openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Helical_Antenna.m;hb=refs/heads/master>`_.
+
+.. include:: ./__Helical_Antenna.txt
+
+Images
+-------------
+.. figure:: images/Helix_Ant.png
+    :width: 49%
+    :alt: alternate text
+    
+    3D view of the Helical Antenna (AppCSXCAD)
+
+.. figure:: images/Helix_Ant_Pattern.png
+    :width: 49%
+    :alt: alternate text
+    
+    Far-Field pattern showing a right-handed circular polarization.

python/doc/Tutorials/Intro_Tutorials.rst

@@ -0,0 +1,10 @@
+.. _intro_tutorials:
+
+Introductional Tutorials
+------------------------
+
+
+.. toctree::
+
+    Rect_Waveguide
+    MSL_NotchFilter

python/doc/Tutorials/MSL_NotchFilter.rst

@@ -0,0 +1,27 @@
+Microstrip Notch Filter
+=======================
+
+    * A straight MSL line with a open-ended stub to create a simple microwave filter.
+
+Introduction
+-------------
+**This tutorial covers:**
+
+
+* Setup a mircostrip line (MSL) and MSL port
+* Apply an inhomogeneous mesh used for improved accuracy and simulation speed
+* Calculate the S-Parameter of the filter
+
+Python Script
+-------------
+Get the latest version `from git <http://openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/MSL_NotchFilter.m;hb=HEAD>`_.
+
+.. include:: ./__MSL_NotchFilter.txt
+
+Images
+-------------
+.. figure:: images/Notch_Filter_SPara.png
+    :width: 49%
+    :alt: S-Parameter over Frequency
+    
+    S-Parameter over Frequency

python/doc/Tutorials/Rect_Waveguide.rst

@@ -0,0 +1,27 @@
+Rectangular Waveguide
+=====================
+
+    * A simple rectangular waveguide, showing the openEMS mode profile capabilities.
+
+Introduction
+-------------
+**This tutorial covers:**
+
+* Setup a mode profile excitation
+* Create voltage and current probes using the mode profile
+* Calculate the waveguide impedance and S-Parameter
+
+
+Python Script
+-------------
+Get the latest version `from git <http://openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Rect_Waveguide.m;hb=HEAD>`_.
+
+.. include:: ./__Rect_Waveguide.txt
+
+Images
+-------------
+.. figure:: images/Rect_WG_SPara.png
+    :width: 49%
+    :alt: S-Parameter over Frequency
+    
+    S-Parameter over Frequency

python/doc/Tutorials/Simple_Patch_Antenna.rst

@@ -0,0 +1,42 @@
+.. _simple_patch_antenna:
+
+Simple Patch Antenna
+====================
+
+Introduction
+------------
+A simple patch antenna for 2.4 GHz.
+
+**This tutorial covers:**
+
+* Setup a patch, substrate and ground.
+* Setup of a lumped feeding port.
+* Adding a near-field to far-field (nf2ff) recording box.
+* Calculate the S-Parameter of the antenna.
+* Calculate and plot the far-field pattern
+
+Python Script
+-------------
+Get the latest version `from git <http://www.openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Simple_Patch_Antenna.m;hb=refs/heads/master>`_.
+
+.. include:: ./__Simple_Patch_Antenna.txt
+
+Images
+------
+.. figure:: images/Simp_Patch_S11.png
+    :width: 49%
+    :alt: S11 over Frequency
+    
+    S-Parameter over Frequency
+
+.. figure:: images/Simp_Patch_Zin.png
+    :width: 49%
+    :alt: Input Impedance
+    
+    Antenna Input Impedance
+
+.. figure:: images/Simp_Patch_Pattern.png
+    :width: 49%
+    :alt: Farfield pattern
+    
+    Farfield pattern for the  xy- and yz-plane.

python/doc/Tutorials/index.rst

@@ -0,0 +1,11 @@
+.. _tutorials:
+
+#########
+Tutorials
+#########
+
+.. toctree::
+    :maxdepth: 2
+
+    Intro_Tutorials
+    Antenna_Tutorials

python/doc/conf.py

@@ -291,6 +291,7 @@ texinfo_documents = [
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 #texinfo_no_detailmenu = False
 
+numpydoc_show_class_members = False
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {'CSXCAD': ('http://openems.de/doc/CSXCAD/', None)}

python/doc/convert_tutorials.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Sat Sep 10 17:12:53 2016
+
+@author: thorsten
+"""
+
+import os
+import glob
+
+DOC_DIR  = os.path.dirname(__file__)
+ROOT_DIR = os.path.join(DOC_DIR, '..')
+
+def main():
+    in_path = os.path.join(ROOT_DIR, 'Tutorials')
+
+    fns = glob.glob(os.path.join(in_path, '*.py'))
+
+    for fn in fns:
+        bn = os.path.basename(fn)
+        out_fn = os.path.join(DOC_DIR, 'Tutorials', '__' + bn.replace('.py', '.txt'))
+
+        in_code_block   = False
+        in_ignore_block = False
+        out_fh = open(out_fn, 'w')
+        for line in open(fn, 'r'):
+            if in_ignore_block==False and line.startswith('"""'):
+                in_ignore_block = True
+                in_code_block   = False
+                continue
+            elif in_ignore_block==True and line.startswith('"""'):
+                in_ignore_block = False
+                in_code_block   = False
+                continue
+            elif in_ignore_block==True:
+                in_code_block   = False
+                continue
+            elif line.startswith('# -*-'):
+                continue
+            elif not line.startswith('##'):
+                if not in_code_block:
+                    if len(line.strip())==0:
+                        continue
+                    out_fh.write('\n.. code-block:: python\n\n')
+                    in_code_block = True
+                out_fh.write('    ' + line)
+            elif line.startswith('###'):
+                if in_code_block:
+                    out_fh.write('\n')
+                in_code_block   = False
+                line = line.replace('#','').strip()
+                out_fh.write('**' + line + '**\n\n')
+#                out_fh.write('"'*len(line) + '\n')
+            elif line.startswith('##'):
+                if in_code_block:
+                    out_fh.write('\n')
+                in_code_block   = False
+                out_fh.write(line.replace('#','').strip() + '\n')
+        out_fh.close()
+
+if __name__ == '__main__':
+    main()

python/doc/index.rst

@@ -9,9 +9,11 @@ Welcome to openEMS's documentation!
 Contents:
 
 .. toctree::
-   :maxdepth: 4
+   :maxdepth: 3
+
+   Tutorials/index
+   openEMS_API
 
-   openEMS
 
 Indices and tables
 ==================

python/doc/nf2ff.rst

@@ -0,0 +1,16 @@
+.. _nf2ff:
+
+NF2FF
+-----
+
+.. automodule:: openEMS.nf2ff
+
+    NF2FF
+    -----
+    .. autoclass:: nf2ff
+        :members:
+
+    NF2FF Results
+    -----------------
+    .. autoclass:: nf2ff_results
+        :members:

python/doc/openEMS.rst

@@ -1,59 +1,8 @@
-openEMS Python Interface
-========================
+.. _openems:
 
 openEMS
 -------
 
-.. automodule:: openEMS.openEMS
+.. automodule:: openEMS
     :members: openEMS
     :undoc-members:
-
-Ports
------
-
-.. automodule:: openEMS.ports
-
-    Port (Base Class)
-    -----------------
-    .. autoclass:: Port
-        :members:
-        :show-inheritance:
-
-    Lumped Port
-    -----------
-    .. autoclass:: LumpedPort
-        :members:
-        :show-inheritance:
-
-    MSL Port
-    --------
-    .. autoclass:: MSLPort
-        :members:
-        :show-inheritance:
-
-    Waveguide Port
-    --------------
-    .. autoclass:: WaveguidePort
-        :members:
-        :show-inheritance:
-
-    Rect Waveguide Port
-    -------------------
-    .. autoclass:: RectWGPort
-        :members:
-        :show-inheritance:
-
-NF2FF
------
-
-.. automodule:: openEMS.nf2ff
-
-    NF2FF
-    -----
-    .. autoclass:: nf2ff
-        :members:
-
-    NF2FF Results
-    -----------------
-    .. autoclass:: nf2ff_results
-        :members:

python/doc/openEMS_API.rst

@@ -0,0 +1,11 @@
+.. _openems_api:
+
+openEMS Python Interface
+========================
+
+.. toctree::
+
+    openEMS
+    ports
+    nf2ff
+

python/doc/ports.rst

@@ -0,0 +1,37 @@
+.. _ports:
+
+Ports
+-----
+
+.. automodule:: openEMS.ports
+
+    Port (Base Class)
+    -----------------
+    .. autoclass:: Port
+        :members:
+        :show-inheritance:
+
+    Lumped Port
+    -----------
+    .. autoclass:: LumpedPort
+        :members:
+        :show-inheritance:
+
+    MSL Port
+    --------
+    .. autoclass:: MSLPort
+        :members:
+        :show-inheritance:
+
+    Waveguide Port
+    --------------
+    .. autoclass:: WaveguidePort
+        :members:
+        :show-inheritance:
+
+    Rect Waveguide Port
+    -------------------
+    .. autoclass:: RectWGPort
+        :members:
+        :show-inheritance:
+

python/openEMS/nf2ff.py

@@ -23,6 +23,17 @@ from openEMS import _nf2ff
 from openEMS import utilities
 
 class nf2ff:
+    """
+    Create an nf2ff recording box. The nf2ff can either record in time-domain
+    or frequency-domain. Further more certain directions and boundary condition
+    mirroring can be enabled/disabled.
+
+    :param name: str -- Name for this recording box.
+    :param start/stop: (3,) array -- Box start/stop coordinates.
+    :param directions: (6,) bool array -- Enable/Disables directions.
+    :param mirror: (6,) int array -- 0 (Off), 1 (PEC) or 2 (PMC) boundary mirroring
+    :param frequency: array like -- List of frequencies (FD-domain recording)
+    """
     def __init__(self, CSX, name, start, stop, **kw):
         self.CSX   = CSX
         self.name  = name
@@ -81,6 +92,20 @@ class nf2ff:
                 CSX.AddBox(self.h_dump, l_start, l_stop)
 
     def CalcNF2FF(self, sim_path, freq, theta, phi, center=[0,0,0], outfile=None, read_cached=True, verbose=0):
+        """ CalcNF2FF(sim_path, freq, theta, phi, center=[0,0,0], outfile=None, read_cached=True, verbose=0):
+
+        Calculate the far-field after the simulation is done.
+
+        :param sim_path: str -- Simulation path
+        :param freq: array like -- list of frequency for transformation
+        :param theta/phi: array like -- Theta/Phi angles to calculate the far-field
+        :param center: (3,) array -- phase center, must be inside the recording box
+        :param outfile: str -- File to save results in. (defaults to recording name)
+        :param read_cached: bool -- enable/disable read already existing results
+        :param verbose: int -- set verbose level
+
+        :returns: nf2ff_results class instance
+        """
         if np.isscalar(freq):
             freq = [freq]
         self.freq  = freq
@@ -119,6 +144,27 @@ class nf2ff:
         return result
 
 class nf2ff_results:
+    """
+    nf2ff result class containing all results obtained by the nf2ff calculation.
+    Usueally returned from nf2ff.CalcNF2FF
+
+    Available attributes:
+
+    * `fn`   : file name
+    * `theta`: theta angles
+    * `phi`  : phi angles
+    * `r`    : radius
+    * `freq` : frequencies
+    * `Dmax` : directivity over frequency
+    * `Prad` : total radiated power over frequency
+
+    * `E_theta` : theta component of electric field over frequency/theta/phi
+    * `E_phi`   : phi   component of electric field over frequency/theta/phi
+    * `E_norm`  : abs   component of electric field over frequency/theta/phi
+    * `E_cprh`  : theta component of electric field over frequency/theta/phi
+    * `E_cplh`  : theta component of electric field over frequency/theta/phi
+    * `P_rad`   : radiated power (S) over frequency/theta/phi
+    """
     def __init__(self, fn):
         self.fn  = fn
         h5_file  = h5py.File(fn, 'r')

python/openEMS/openEMS.pyx

@@ -24,6 +24,30 @@ from . import ports, nf2ff
 cdef class openEMS:
     """ openEMS
 
+    This class is the main control class for the FDTD options and setup and
+    to run the final simulation.
+
+    Examples
+    --------
+
+    >>> CSX = CSXCAD.ContinuousStructure()
+    >>>
+    >>> grid = CSX.GetGrid()
+    >>> grid.SetLines('x', np.arange(-50,50,1))
+    >>> grid.SetLines('y', np.arange(-50,50,1))
+    >>> grid.SetLines('z', np.arange(-2,2.1,1))
+    >>> grid.SetDeltaUnit(1e-3)
+    >>>
+    >>> FDTD = openEMS(NrTS=1e4, EndCriteria=1e-4)
+    >>>
+    >>> FDTD.SetCSX(CSX)
+    >>> FDTD.SetBoundaryCond(['PML_8', 'PML_8', 'PML_8', 'PML_8', 'PEC', 'PEC'])
+    >>> FDTD.SetGaussExcite(0, 10e9)
+    >>>
+    >>> FDTD.AddLumpedPort(port_nr=1, R=50, start=[10, 0, -2], stop=[10, 0, 2], p_dir='z', excite=1)
+    >>>
+    >>> FDTD.Run(sim_path='/tmp/test')
+
     :param NrTS:           max. number of timesteps to simulate (e.g. default=1e9)
     :param EndCriteria:    end criteria, e.g. 1e-5, simulations stops if energy has decayed by this value (<1e-4 is recommended, default=1e-5)
     :param MaxTime:        max. real time in seconds to simulate
@@ -300,7 +324,7 @@ cdef class openEMS:
 
         See Also
         --------
-        CSXCAD.CSXCAD.ContinuousStructure
+        CSXCAD.ContinuousStructure
         """
         self.__CSX = CSX
         self.thisptr.SetCSX(CSX.thisptr)

python/openEMS/ports.py

@@ -41,6 +41,19 @@ class UI_data:
 
 # Port Base-Class
 class Port:
+    """
+    The port base class.
+
+    :param CSX: Continuous Structure
+    :param port_nr: int -- port number
+    :param R: float -- port reference impedance, e.g. 50 (Ohms)
+    :param start, stop: (3,) array -- Start/Stop box coordinates
+    :param p_dir: int -- port direction
+    :param excite: float -- port excitation amplitude
+    :param priority: int -- priority of all contained primtives
+    :param PortNamePrefix: str -- a prefix for all ports-names
+    :param delay: float -- a positiv delay value to e.g. emulate a phase shift
+    """
     def __init__(self, CSX, port_nr, start, stop, excite, **kw):
         self.CSX      = CSX
         self.number   = port_nr
@@ -123,12 +136,9 @@ class LumpedPort(Port):
     """
     The lumped port.
 
-    :param CSX: Continuous Structure
-    :param port_nr: int -- port number
-    :param R: float -- port reference impedance, e.g. 50 (Ohms)
-    :param start, stop: (3,) array -- Start/Stop box coordinates
-    :param p_dir: int -- port direction
-    :param excite: float -- port excitation amplitude
+    See Also
+    --------
+    Port
     """
     def __init__(self, CSX,  port_nr, R, start, stop, exc_dir, excite=0, **kw):
         super(LumpedPort, self).__init__(CSX, port_nr=port_nr, start=start, stop=stop, excite=excite, **kw)
@@ -175,6 +185,15 @@ class LumpedPort(Port):
         super(LumpedPort, self).CalcPort(sim_path, freq, ref_impedance, ref_plane_shift, signal_type)
 
 class MSLPort(Port):
+    """
+    The microstrip transmission line port.
+
+    :param prop_dir: int/str -- direction of propagation
+
+    See Also
+    --------
+    Port
+    """
     def __init__(self, CSX, port_nr, metal_prop, start, stop, prop_dir, exc_dir, excite=0, **kw):
         super(MSLPort, self).__init__(CSX, port_nr=port_nr, start=start, stop=stop, excite=excite, **kw)
         self.exc_ny  = CheckNyDir(exc_dir)
@@ -287,6 +306,16 @@ class MSLPort(Port):
         self.Z_ref = np.sqrt(Et * dEt / (Ht * dHt))
 
 class WaveguidePort(Port):
+    """
+    Base class for any waveguide port.
+
+    :param mode_name: str -- Mode name, e.g. TE11 or TM10
+
+    See Also
+    --------
+    Port, RectWGPort
+
+    """
     def __init__(self, CSX, port_nr, start, stop, exc_dir, mode_name, excite=0, **kw):
         super(WaveguidePort, self).__init__(CSX, port_nr=port_nr, start=start, stop=stop, excite=excite, **kw)
         self.exc_ny  = CheckNyDir(exc_dir)
@@ -324,6 +353,9 @@ class WaveguidePort(Port):
         CSX.AddBox(i_probe, m_start, m_stop)
 
     def InitMode(self, wg_mode):
+        """
+        Init/Define waveguide mode, e.g. TE11, TM10.
+        """
         self.WG_mode = wg_mode
         assert len(self.WG_mode)==4, 'Invalid mode definition'
         self.unit = self.CSX.GetGrid().GetDeltaUnit()
@@ -348,11 +380,24 @@ class WaveguidePort(Port):
         super(WaveguidePort, self).CalcPort(sim_path, freq, ref_impedance, ref_plane_shift, signal_type)
 
 class RectWGPort(WaveguidePort):
+    """
+    Rectangular waveguide port.
+
+    :param a,b: float -- Width/Height of rectangular waveguide port
+
+    See Also
+    --------
+    Port, WaveguidePort
+
+    """
     def __init__(self, CSX, port_nr, start, stop, exc_dir, a, b, mode_name, excite=0, **kw):
         self.WG_size = [a, b]
         super(RectWGPort, self).__init__(CSX, port_nr=port_nr, start=start, stop=stop, exc_dir=exc_dir, mode_name=mode_name, excite=excite, **kw)
 
     def InitMode(self, wg_mode):
+        """
+        Init/Define rectangular waveguide mode, e.g. TE11, TM10.
+        """
         super(RectWGPort, self).InitMode(wg_mode)
         assert self.TE, 'Currently only TE-modes are supported! Mode found: {}'.format(self.WG_mode)