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diff --git a/doc/build/html/_images/load_image_posorient.png b/doc/build/html/_images/load_image_posorient.png
index 8a14eeb72141a2071cdcba2f332a36c17f8e7712..02f739b7e5764387b2d83a1e699f797a2b50176f 100644
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diff --git a/doc/build/html/_images/load_image_rowid.png b/doc/build/html/_images/load_image_rowid.png
index e3a39391c658f5e0a8c0ea4b33c674c9ff42f553..48d780ebb55d3fe664b37583d588a5cf4afd87ba 100644
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diff --git a/doc/build/html/_images/michelson_contrast.png b/doc/build/html/_images/michelson_contrast.png
index f4db565465ec62f643aad575d81e995ebb4b062a..9e0676b9358c8075f30062567b82f843b534cf11 100644
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diff --git a/doc/build/html/_images/scene.png b/doc/build/html/_images/scene.png
index 7f2c9d004b528a87d73051424aaf3df62f2bb798..171339115a321947239ca48734fccfe29b2b1ab3 100644
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diff --git a/doc/build/html/_images/skyline.png b/doc/build/html/_images/skyline.png
index 4ec6af47feee53e0b6e2bff729e0814ec4cc1d91..44536dbe3e80db807af3ea36d91126ec93c369b4 100644
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diff --git a/doc/build/html/database.html b/doc/build/html/database.html
index 693b316e31a373703a98ca383457c24b04f8364b..5290e2e42ea597f7db773bd80a6f738870442cb3 100644
--- a/doc/build/html/database.html
+++ b/doc/build/html/database.html
@@ -27,7 +27,7 @@
<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
- <link rel="prev" title="Getting started" href="moving.html" />
+ <link rel="prev" title="Analysing" href="analysing.html" />
<link rel="stylesheet" href="_static/custom.css" type="text/css" />
@@ -116,7 +116,7 @@
<h3>Related Topics</h3>
<ul>
<li><a href="index.html">Documentation overview</a><ul>
- <li>Previous: <a href="moving.html" title="previous chapter">Getting started</a></li>
+ <li>Previous: <a href="analysing.html" title="previous chapter">Analysing</a></li>
</ul></li>
</ul>
</div>
diff --git a/doc/build/html/example/database/load_image_posorient.hires.png b/doc/build/html/example/database/load_image_posorient.hires.png
index f34c82c0ca0def0ac4e6fe6bb8a8a2dbc174a54f..7fe0d9d0cc6e7774819d1b061a526822d762ff86 100644
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diff --git a/doc/build/html/example/database/load_image_posorient.pdf b/doc/build/html/example/database/load_image_posorient.pdf
index 07b7de9995cfe47e614315e64d2c1cec1e026fb9..c54d4c4bc7ab5b9c4f6f4358f89fa6442373c895 100644
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diff --git a/doc/build/html/example/database/load_image_posorient.png b/doc/build/html/example/database/load_image_posorient.png
index 8a14eeb72141a2071cdcba2f332a36c17f8e7712..02f739b7e5764387b2d83a1e699f797a2b50176f 100644
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diff --git a/doc/build/html/example/database/load_image_posorient.py b/doc/build/html/example/database/load_image_posorient.py
index 9d9756ab8500353fcf67c4dbdf5ac46124944c83..a0662123dcf2ceb2bca56c33752ca8c81e07cf5c 100644
--- a/doc/build/html/example/database/load_image_posorient.py
+++ b/doc/build/html/example/database/load_image_posorient.py
@@ -12,9 +12,9 @@ mydb = DataBaseLoad(mydb_filename)
# we want the image
posorient = pd.Series(index=['x', 'y', 'z',
'alpha_0', 'alpha_1', 'alpha_2'])
-posorient.x = -0.6
-posorient.y = -7.2
-posorient.z = 2.35
+posorient.x = 0.0
+posorient.y = -0.25
+posorient.z = 3.0
posorient.alpha_0 = np.pi / 2
posorient.alpha_1 = 0
posorient.alpha_2 = 0
diff --git a/doc/build/html/example/database/load_image_rowid.hires.png b/doc/build/html/example/database/load_image_rowid.hires.png
index 5d4caecc627025ba17688078d6844bd366bdff55..d7d497191f6655163d47f52c9851780471b1be80 100644
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diff --git a/doc/build/html/example/database/load_image_rowid.pdf b/doc/build/html/example/database/load_image_rowid.pdf
index c47f7e89793960faace13168465fda8aff55ad71..0344ee52eca92bf3d51746a1f4c6ce219032f015 100644
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diff --git a/doc/build/html/example/database/load_image_rowid.png b/doc/build/html/example/database/load_image_rowid.png
index e3a39391c658f5e0a8c0ea4b33c674c9ff42f553..48d780ebb55d3fe664b37583d588a5cf4afd87ba 100644
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diff --git a/doc/build/html/example/database/load_image_rowid.py b/doc/build/html/example/database/load_image_rowid.py
index c4894477c5ec0a6c3b25ee0071da6e3f84b201c2..cacf4139b8c8b2737b15000e8c42006913edcda5 100644
--- a/doc/build/html/example/database/load_image_rowid.py
+++ b/doc/build/html/example/database/load_image_rowid.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 1000
+rowid = 12
# 3) Load the image
image = mydb.read_image(rowid=rowid)
# 4) plot the image
diff --git a/doc/build/html/example/processing/apcv.hires.png b/doc/build/html/example/processing/apcv.hires.png
index a1a06ccfc51d8d68aeb90657ebe32090d9b5740e..14103785edaf678cd42b0ea626a660ef0cb965ab 100644
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diff --git a/doc/build/html/example/processing/apcv.pdf b/doc/build/html/example/processing/apcv.pdf
index 6cf6aeec7405f49feb322662280687fcf736665c..b07864f13121bd736cad732a71b219625574e292 100644
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diff --git a/doc/build/html/example/processing/apcv.png b/doc/build/html/example/processing/apcv.png
index 1a0b9305c555a4cc8c5a8bd81387ddc1c25c6c57..a3b164e2092020ca7d47a6b9144727ac1bf8886f 100644
Binary files a/doc/build/html/example/processing/apcv.png and b/doc/build/html/example/processing/apcv.png differ
diff --git a/doc/build/html/example/processing/apcv.py b/doc/build/html/example/processing/apcv.py
index f515ac1e3c828193abc7a2ed814780d89b014a9f..ecca32ce52f4daa2598f22c9ffdbf5c98f209ce6 100644
--- a/doc/build/html/example/processing/apcv.py
+++ b/doc/build/html/example/processing/apcv.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_apcv = processing.apcv(my_scene, mydb.viewing_directions)
diff --git a/doc/build/html/example/processing/contrast_weighted_nearness.hires.png b/doc/build/html/example/processing/contrast_weighted_nearness.hires.png
index 39fba21ce339378348783257d12928ae0c2a0ea8..eb90ce23e1504adca338d2bb031cae9b8a332c4a 100644
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diff --git a/doc/build/html/example/processing/contrast_weighted_nearness.pdf b/doc/build/html/example/processing/contrast_weighted_nearness.pdf
index fdcf0dad007c2cb9da03a1b2b82839a9661ccc63..2a03abb8df6d58612a3050ec9c8632d07b08bf71 100644
Binary files a/doc/build/html/example/processing/contrast_weighted_nearness.pdf and b/doc/build/html/example/processing/contrast_weighted_nearness.pdf differ
diff --git a/doc/build/html/example/processing/contrast_weighted_nearness.png b/doc/build/html/example/processing/contrast_weighted_nearness.png
index c611895f3aea8196bca5154bf7c8ce25175cb71d..437e7977e63013c1c299d3467dd6569e05ac3cac 100644
Binary files a/doc/build/html/example/processing/contrast_weighted_nearness.png and b/doc/build/html/example/processing/contrast_weighted_nearness.png differ
diff --git a/doc/build/html/example/processing/contrast_weighted_nearness.py b/doc/build/html/example/processing/contrast_weighted_nearness.py
index 40a940d163c15a1952b3c3a422544fad16ef3de4..92066428cbe39cedf98954f34932eebb9c16d36e 100644
--- a/doc/build/html/example/processing/contrast_weighted_nearness.py
+++ b/doc/build/html/example/processing/contrast_weighted_nearness.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_contrast = processing.contrast_weighted_nearness(my_scene)
diff --git a/doc/build/html/example/processing/michelson_contrast.hires.png b/doc/build/html/example/processing/michelson_contrast.hires.png
index 286bb80e82df286aa76ab85248fcc4fccee15193..02f1408605e5995e62fa5220a326bf6c57be12cd 100644
Binary files a/doc/build/html/example/processing/michelson_contrast.hires.png and b/doc/build/html/example/processing/michelson_contrast.hires.png differ
diff --git a/doc/build/html/example/processing/michelson_contrast.pdf b/doc/build/html/example/processing/michelson_contrast.pdf
index 9d7731be3d94b30b29403df4d25fe25d1dcc8640..4af55ff5c131adf2df41d6865a391e5f300a5a55 100644
Binary files a/doc/build/html/example/processing/michelson_contrast.pdf and b/doc/build/html/example/processing/michelson_contrast.pdf differ
diff --git a/doc/build/html/example/processing/michelson_contrast.png b/doc/build/html/example/processing/michelson_contrast.png
index f4db565465ec62f643aad575d81e995ebb4b062a..9e0676b9358c8075f30062567b82f843b534cf11 100644
Binary files a/doc/build/html/example/processing/michelson_contrast.png and b/doc/build/html/example/processing/michelson_contrast.png differ
diff --git a/doc/build/html/example/processing/michelson_contrast.py b/doc/build/html/example/processing/michelson_contrast.py
index 3c50bf9dd1a507daa0d9d2e524a4d158ae9df39b..85a8f1018f984960639b1c826243ed7f1c27f872 100644
--- a/doc/build/html/example/processing/michelson_contrast.py
+++ b/doc/build/html/example/processing/michelson_contrast.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_contrast = processing.michelson_contrast(my_scene)
diff --git a/doc/build/html/example/processing/pcv.py b/doc/build/html/example/processing/pcv.py
index 028be6eb78a50d30b30fb6661ddf9adb616b27b7..ad89b8be731c5930decfc913641f3c438a23a846 100644
--- a/doc/build/html/example/processing/pcv.py
+++ b/doc/build/html/example/processing/pcv.py
@@ -9,6 +9,6 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_pcv = processing.pcv(my_scene, mydb.viewing_directions)
diff --git a/doc/build/html/example/processing/scene.hires.png b/doc/build/html/example/processing/scene.hires.png
index 2483a3499926b904bfc7b09bc95972a02076ba8e..a3c61068e1bf72f744a3daf666af5e574927ee5c 100644
Binary files a/doc/build/html/example/processing/scene.hires.png and b/doc/build/html/example/processing/scene.hires.png differ
diff --git a/doc/build/html/example/processing/scene.pdf b/doc/build/html/example/processing/scene.pdf
index 3057412d1b1488332430b50f3eb1efa1b354aed3..b043c8aff5b01f17340f044f3187c909086d59a4 100644
Binary files a/doc/build/html/example/processing/scene.pdf and b/doc/build/html/example/processing/scene.pdf differ
diff --git a/doc/build/html/example/processing/scene.png b/doc/build/html/example/processing/scene.png
index 7f2c9d004b528a87d73051424aaf3df62f2bb798..171339115a321947239ca48734fccfe29b2b1ab3 100644
Binary files a/doc/build/html/example/processing/scene.png and b/doc/build/html/example/processing/scene.png differ
diff --git a/doc/build/html/example/processing/scene.py b/doc/build/html/example/processing/scene.py
index bdaebb5bf8f23cca0f04a9e113eedbb5fa97e0a7..be6d1d36cbdbd62c49f22b408a388be271483ba4 100644
--- a/doc/build/html/example/processing/scene.py
+++ b/doc/build/html/example/processing/scene.py
@@ -10,7 +10,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image and get the scene
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
diff --git a/doc/build/html/example/processing/skyline.hires.png b/doc/build/html/example/processing/skyline.hires.png
index 8cac8198ec1fd533c406e8504caae53b472d7429..4d2ff950149dd0aaf9f2051caeeaca74964015af 100644
Binary files a/doc/build/html/example/processing/skyline.hires.png and b/doc/build/html/example/processing/skyline.hires.png differ
diff --git a/doc/build/html/example/processing/skyline.pdf b/doc/build/html/example/processing/skyline.pdf
index 0ff1b4f593df1e12b3d8f46b370e07f9246b7f5b..b10059be6826f5c1a449112238393465afa423e3 100644
Binary files a/doc/build/html/example/processing/skyline.pdf and b/doc/build/html/example/processing/skyline.pdf differ
diff --git a/doc/build/html/example/processing/skyline.png b/doc/build/html/example/processing/skyline.png
index 4ec6af47feee53e0b6e2bff729e0814ec4cc1d91..44536dbe3e80db807af3ea36d91126ec93c369b4 100644
Binary files a/doc/build/html/example/processing/skyline.png and b/doc/build/html/example/processing/skyline.png differ
diff --git a/doc/build/html/example/processing/skyline.py b/doc/build/html/example/processing/skyline.py
index f577844b6fb5a81e365d88323bcaae37ff585060..a178e8f7580e5a2f337f53f903afbce09e135b9d 100644
--- a/doc/build/html/example/processing/skyline.py
+++ b/doc/build/html/example/processing/skyline.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_skyline = processing.skyline(my_scene)
diff --git a/doc/build/html/gettingstarted.html b/doc/build/html/gettingstarted.html
index 5cc19821552be7e681585a7baf200930db701985..641db624cba7dae4af659982e09ee026b788d541 100644
--- a/doc/build/html/gettingstarted.html
+++ b/doc/build/html/gettingstarted.html
@@ -27,7 +27,7 @@
<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
- <link rel="next" title="Getting started" href="rendering.html" />
+ <link rel="next" title="Rendering" href="rendering.html" />
<link rel="prev" title="Welcome to Navigation Toolbox’s documentation!" href="index.html" />
<link rel="stylesheet" href="_static/custom.css" type="text/css" />
@@ -57,7 +57,7 @@
<ul>
<li><a href="index.html">Documentation overview</a><ul>
<li>Previous: <a href="index.html" title="previous chapter">Welcome to Navigation Toolbox’s documentation!</a></li>
- <li>Next: <a href="rendering.html" title="next chapter">Getting started</a></li>
+ <li>Next: <a href="rendering.html" title="next chapter">Rendering</a></li>
</ul></li>
</ul>
</div>
diff --git a/doc/build/html/processing.html b/doc/build/html/processing.html
index 0d2b4937624026f33ea7df44c353e1ecae3359ba..8e59974e76903761880c01be3231c8a1e1a45bab 100644
--- a/doc/build/html/processing.html
+++ b/doc/build/html/processing.html
@@ -105,7 +105,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
</pre></div>
</div>
@@ -135,7 +135,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
<span class="n">my_skyline</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">skyline</span><span class="p">(</span><span class="n">my_scene</span><span class="p">)</span>
</pre></div>
@@ -174,7 +174,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
<span class="n">my_contrast</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">michelson_contrast</span><span class="p">(</span><span class="n">my_scene</span><span class="p">)</span>
</pre></div>
@@ -205,7 +205,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
<span class="n">my_contrast</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">contrast_weighted_nearness</span><span class="p">(</span><span class="n">my_scene</span><span class="p">)</span>
</pre></div>
@@ -241,7 +241,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
<span class="n">my_pcv</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">pcv</span><span class="p">(</span><span class="n">my_scene</span><span class="p">,</span> <span class="n">mydb</span><span class="o">.</span><span class="n">viewing_directions</span><span class="p">)</span>
</pre></div>
@@ -274,7 +274,7 @@ in a given database.</p>
</tr>
</tbody>
</table>
-<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">5000</span>
+<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">rowid</span> <span class="o">=</span> <span class="mi">12</span>
<span class="n">my_scene</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">scene</span><span class="p">(</span><span class="n">mydb</span><span class="p">,</span> <span class="n">rowid</span><span class="o">=</span><span class="n">rowid</span><span class="p">)</span>
<span class="n">my_apcv</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">apcv</span><span class="p">(</span><span class="n">my_scene</span><span class="p">,</span> <span class="n">mydb</span><span class="o">.</span><span class="n">viewing_directions</span><span class="p">)</span>
</pre></div>
diff --git a/doc/build/html/searchindex.js b/doc/build/html/searchindex.js
index ef9494b984a5c9ee743c56f84162ff925da62e1f..30030b8347410fd3410ebe9bb6d26439fc40711a 100644
--- a/doc/build/html/searchindex.js
+++ b/doc/build/html/searchindex.js
@@ -1 +1 @@
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diff --git a/doc/build/plot_directive/example/processing/scene.pdf b/doc/build/plot_directive/example/processing/scene.pdf
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diff --git a/doc/build/plot_directive/example/processing/scene.png b/doc/build/plot_directive/example/processing/scene.png
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diff --git a/doc/build/plot_directive/example/processing/skyline.hires.png b/doc/build/plot_directive/example/processing/skyline.hires.png
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diff --git a/doc/build/plot_directive/example/processing/skyline.pdf b/doc/build/plot_directive/example/processing/skyline.pdf
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diff --git a/doc/build/plot_directive/example/processing/skyline.png b/doc/build/plot_directive/example/processing/skyline.png
index 4ec6af47feee53e0b6e2bff729e0814ec4cc1d91..44536dbe3e80db807af3ea36d91126ec93c369b4 100644
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diff --git a/doc/source/example/database/load_image_posorient.py b/doc/source/example/database/load_image_posorient.py
index 9d9756ab8500353fcf67c4dbdf5ac46124944c83..a0662123dcf2ceb2bca56c33752ca8c81e07cf5c 100644
--- a/doc/source/example/database/load_image_posorient.py
+++ b/doc/source/example/database/load_image_posorient.py
@@ -12,9 +12,9 @@ mydb = DataBaseLoad(mydb_filename)
# we want the image
posorient = pd.Series(index=['x', 'y', 'z',
'alpha_0', 'alpha_1', 'alpha_2'])
-posorient.x = -0.6
-posorient.y = -7.2
-posorient.z = 2.35
+posorient.x = 0.0
+posorient.y = -0.25
+posorient.z = 3.0
posorient.alpha_0 = np.pi / 2
posorient.alpha_1 = 0
posorient.alpha_2 = 0
diff --git a/doc/source/example/database/load_image_rowid.py b/doc/source/example/database/load_image_rowid.py
index c4894477c5ec0a6c3b25ee0071da6e3f84b201c2..cacf4139b8c8b2737b15000e8c42006913edcda5 100644
--- a/doc/source/example/database/load_image_rowid.py
+++ b/doc/source/example/database/load_image_rowid.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 1000
+rowid = 12
# 3) Load the image
image = mydb.read_image(rowid=rowid)
# 4) plot the image
diff --git a/doc/source/example/processing/apcv.py b/doc/source/example/processing/apcv.py
index f515ac1e3c828193abc7a2ed814780d89b014a9f..ecca32ce52f4daa2598f22c9ffdbf5c98f209ce6 100644
--- a/doc/source/example/processing/apcv.py
+++ b/doc/source/example/processing/apcv.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_apcv = processing.apcv(my_scene, mydb.viewing_directions)
diff --git a/doc/source/example/processing/contrast_weighted_nearness.py b/doc/source/example/processing/contrast_weighted_nearness.py
index 40a940d163c15a1952b3c3a422544fad16ef3de4..92066428cbe39cedf98954f34932eebb9c16d36e 100644
--- a/doc/source/example/processing/contrast_weighted_nearness.py
+++ b/doc/source/example/processing/contrast_weighted_nearness.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_contrast = processing.contrast_weighted_nearness(my_scene)
diff --git a/doc/source/example/processing/michelson_contrast.py b/doc/source/example/processing/michelson_contrast.py
index 3c50bf9dd1a507daa0d9d2e524a4d158ae9df39b..85a8f1018f984960639b1c826243ed7f1c27f872 100644
--- a/doc/source/example/processing/michelson_contrast.py
+++ b/doc/source/example/processing/michelson_contrast.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_contrast = processing.michelson_contrast(my_scene)
diff --git a/doc/source/example/processing/pcv.py b/doc/source/example/processing/pcv.py
index 028be6eb78a50d30b30fb6661ddf9adb616b27b7..ad89b8be731c5930decfc913641f3c438a23a846 100644
--- a/doc/source/example/processing/pcv.py
+++ b/doc/source/example/processing/pcv.py
@@ -9,6 +9,6 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_pcv = processing.pcv(my_scene, mydb.viewing_directions)
diff --git a/doc/source/example/processing/scene.py b/doc/source/example/processing/scene.py
index bdaebb5bf8f23cca0f04a9e113eedbb5fa97e0a7..be6d1d36cbdbd62c49f22b408a388be271483ba4 100644
--- a/doc/source/example/processing/scene.py
+++ b/doc/source/example/processing/scene.py
@@ -10,7 +10,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image and get the scene
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
diff --git a/doc/source/example/processing/skyline.py b/doc/source/example/processing/skyline.py
index f577844b6fb5a81e365d88323bcaae37ff585060..a178e8f7580e5a2f337f53f903afbce09e135b9d 100644
--- a/doc/source/example/processing/skyline.py
+++ b/doc/source/example/processing/skyline.py
@@ -9,7 +9,7 @@ mydb_filename = os.path.abspath('../database.db')
mydb = DataBaseLoad(mydb_filename)
# 2) Define the position-orinetation at which
# we want the image
-rowid = 5000
+rowid = 12
my_scene = processing.scene(mydb, rowid=rowid)
my_skyline = processing.skyline(my_scene)
diff --git a/src/comparing/Place_comparator.py b/src/comparing/__init__.py
similarity index 100%
rename from src/comparing/Place_comparator.py
rename to src/comparing/__init__.py
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